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[PATCH] powerpc: Unify udbg (#2)

Browse Source 
This patch unifies udbg for both ppc32 and ppc64 when building the
merged achitecture. xmon now has a single "back end". The powermac udbg
stuff gets enriched with some ADB capabilities and btext output. In
addition, the early_init callback is now called on ppc32 as well,
approx. in the same order as ppc64 regarding device-tree manipulations.
The init sequences of ppc32 and ppc64 are getting closer, I'll unify
them in a later patch.

For now, you can force udbg to the scc using "sccdbg" or to btext using
"btextdbg" on powermacs. I'll implement a cleaner way of forcing udbg
output to something else than the autodetected OF output device in a
later patch.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt 2005-11-23 17:57:25 +11:00 committed by Paul Mackerras
parent 463ce0e103
commit 51d3082fe6
29 changed files with 627 additions and 720 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/powerpc/Kconfig
View File

@ -50,7 +50,7 @@ config PPC
config EARLY_PRINTK
bool
default y if PPC64
default y
config COMPAT
bool

7
arch/powerpc/kernel/Makefile
View File

@ -18,7 +18,7 @@ obj-y += vdso32/
obj-$(CONFIG_PPC64) += setup_64.o binfmt_elf32.o sys_ppc32.o \
signal_64.o ptrace32.o systbl.o \
paca.o ioctl32.o cpu_setup_power4.o \
firmware.o sysfs.o udbg.o idle_64.o
firmware.o sysfs.o idle_64.o
obj-$(CONFIG_PPC64) += vdso64/
obj-$(CONFIG_ALTIVEC) += vecemu.o vector.o
obj-$(CONFIG_POWER4) += idle_power4.o
@ -46,7 +46,7 @@ extra-$(CONFIG_8xx) := head_8xx.o
extra-y += vmlinux.lds
obj-y += process.o init_task.o time.o \
prom.o traps.o setup-common.o
prom.o traps.o setup-common.o udbg.o
obj-$(CONFIG_PPC32) += entry_32.o setup_32.o misc_32.o systbl.o
obj-$(CONFIG_PPC64) += misc_64.o dma_64.o iommu.o
obj-$(CONFIG_PPC_OF) += prom_init.o
@ -56,8 +56,7 @@ obj-$(CONFIG_6xx) += idle_6xx.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_KPROBES) += kprobes.o
obj-$(CONFIG_PPC_MULTIPLATFORM) += legacy_serial.o
obj64-$(CONFIG_PPC_MULTIPLATFORM) += udbg_16550.o
obj64-$(CONFIG_PPC_PMAC) += udbg_scc.o
obj-$(CONFIG_PPC_MULTIPLATFORM) += udbg_16550.o
module-$(CONFIG_PPC64) += module_64.o
obj-$(CONFIG_MODULES) += $(module-y)

130
arch/powerpc/kernel/btext.c
View File

@ -31,15 +31,18 @@ static void draw_byte_32(unsigned char *bits, unsigned int *base, int rb);
static void draw_byte_16(unsigned char *bits, unsigned int *base, int rb);
static void draw_byte_8(unsigned char *bits, unsigned int *base, int rb);
static int g_loc_X;
static int g_loc_Y;
static int g_max_loc_X;
static int g_max_loc_Y;
#define __force_data __attribute__((__section__(".data")))
static int dispDeviceRowBytes;
static int dispDeviceDepth;
static int dispDeviceRect[4];
static unsigned char *dispDeviceBase, *logicalDisplayBase;
static int g_loc_X __force_data;
static int g_loc_Y __force_data;
static int g_max_loc_X __force_data;
static int g_max_loc_Y __force_data;
static int dispDeviceRowBytes __force_data;
static int dispDeviceDepth __force_data;
static int dispDeviceRect[4] __force_data;
static unsigned char *dispDeviceBase __force_data;
static unsigned char *logicalDisplayBase __force_data;
unsigned long disp_BAT[2] __initdata = {0, 0};
@ -47,7 +50,7 @@ unsigned long disp_BAT[2] __initdata = {0, 0};
static unsigned char vga_font[cmapsz];
int boot_text_mapped;
int boot_text_mapped __force_data = 0;
int force_printk_to_btext = 0;
#ifdef CONFIG_PPC32
@ -66,8 +69,7 @@ int force_printk_to_btext = 0;
* is really badly aligned, but I didn't encounter this case
* yet.
*/
void __init
btext_prepare_BAT(void)
void __init btext_prepare_BAT(void)
{
unsigned long vaddr = KERNELBASE + 0x10000000;
unsigned long addr;
@ -95,12 +97,13 @@ btext_prepare_BAT(void)
}
#endif
/* This function will enable the early boot text when doing OF booting. This
* way, xmon output should work too
/* This function can be used to enable the early boot text when doing
* OF booting or within bootx init. It must be followed by a btext_unmap()
* call before the logical address becomes unuseable
*/
void __init
btext_setup_display(int width, int height, int depth, int pitch,
unsigned long address)
void __init btext_setup_display(int width, int height, int depth, int pitch,
unsigned long address)
{
g_loc_X = 0;
g_loc_Y = 0;
@ -116,6 +119,11 @@ btext_setup_display(int width, int height, int depth, int pitch,
boot_text_mapped = 1;
}
void __init btext_unmap(void)
{
boot_text_mapped = 0;
}
/* Here's a small text engine to use during early boot
* or for debugging purposes
*
@ -127,7 +135,7 @@ btext_setup_display(int width, int height, int depth, int pitch,
* changes.
*/
void map_boot_text(void)
static void map_boot_text(void)
{
unsigned long base, offset, size;
unsigned char *vbase;
@ -175,8 +183,9 @@ int btext_initialize(struct device_node *np)
if (prop)
address = *prop;
/* FIXME: Add support for PCI reg properties */
/* FIXME: Add support for PCI reg properties. Right now, only
* reliable on macs
*/
if (address == 0)
return -EINVAL;
@ -184,7 +193,6 @@ int btext_initialize(struct device_node *np)
g_loc_Y = 0;
g_max_loc_X = width / 8;
g_max_loc_Y = height / 16;
logicalDisplayBase = (unsigned char *)address;
dispDeviceBase = (unsigned char *)address;
dispDeviceRowBytes = pitch;
dispDeviceDepth = depth;
@ -197,7 +205,7 @@ int btext_initialize(struct device_node *np)
return 0;
}
void __init init_boot_display(void)
int __init btext_find_display(int allow_nonstdout)
{
char *name;
struct device_node *np = NULL;
@ -218,8 +226,8 @@ void __init init_boot_display(void)
}
if (np)
rc = btext_initialize(np);
if (rc == 0)
return;
if (rc == 0 || !allow_nonstdout)
return rc;
for (np = NULL; (np = of_find_node_by_type(np, "display"));) {
if (get_property(np, "linux,opened", NULL)) {
@ -228,8 +236,9 @@ void __init init_boot_display(void)
printk("result: %d\n", rc);
}
if (rc == 0)
return;
break;
}
return rc;
}
/* Calc the base address of a given point (x,y) */
@ -277,44 +286,83 @@ EXPORT_SYMBOL(btext_update_display);
void btext_clearscreen(void)
{
unsigned long *base = (unsigned long *)calc_base(0, 0);
unsigned int *base = (unsigned int *)calc_base(0, 0);
unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
(dispDeviceDepth >> 3)) >> 3;
(dispDeviceDepth >> 3)) >> 2;
int i,j;
for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1]); i++)
{
unsigned long *ptr = base;
unsigned int *ptr = base;
for(j=width; j; --j)
*(ptr++) = 0;
base += (dispDeviceRowBytes >> 3);
base += (dispDeviceRowBytes >> 2);
}
}
void btext_flushscreen(void)
{
unsigned int *base = (unsigned int *)calc_base(0, 0);
unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
(dispDeviceDepth >> 3)) >> 2;
int i,j;
for (i=0; i < (dispDeviceRect[3] - dispDeviceRect[1]); i++)
{
unsigned int *ptr = base;
for(j = width; j > 0; j -= 8) {
__asm__ __volatile__ ("dcbst 0,%0" :: "r" (ptr));
ptr += 8;
}
base += (dispDeviceRowBytes >> 2);
}
__asm__ __volatile__ ("sync" ::: "memory");
}
void btext_flushline(void)
{
unsigned int *base = (unsigned int *)calc_base(0, g_loc_Y << 4);
unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
(dispDeviceDepth >> 3)) >> 2;
int i,j;
for (i=0; i < 16; i++)
{
unsigned int *ptr = base;
for(j = width; j > 0; j -= 8) {
__asm__ __volatile__ ("dcbst 0,%0" :: "r" (ptr));
ptr += 8;
}
base += (dispDeviceRowBytes >> 2);
}
__asm__ __volatile__ ("sync" ::: "memory");
}
#ifndef NO_SCROLL
static void scrollscreen(void)
{
unsigned long *src = (unsigned long *)calc_base(0,16);
unsigned long *dst = (unsigned long *)calc_base(0,0);
unsigned int *src = (unsigned int *)calc_base(0,16);
unsigned int *dst = (unsigned int *)calc_base(0,0);
unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
(dispDeviceDepth >> 3)) >> 3;
(dispDeviceDepth >> 3)) >> 2;
int i,j;
for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1] - 16); i++)
{
unsigned long *src_ptr = src;
unsigned long *dst_ptr = dst;
unsigned int *src_ptr = src;
unsigned int *dst_ptr = dst;
for(j=width; j; --j)
*(dst_ptr++) = *(src_ptr++);
src += (dispDeviceRowBytes >> 3);
dst += (dispDeviceRowBytes >> 3);
src += (dispDeviceRowBytes >> 2);
dst += (dispDeviceRowBytes >> 2);
}
for (i=0; i<16; i++)
{
unsigned long *dst_ptr = dst;
unsigned int *dst_ptr = dst;
for(j=width; j; --j)
*(dst_ptr++) = 0;
dst += (dispDeviceRowBytes >> 3);
dst += (dispDeviceRowBytes >> 2);
}
}
#endif /* ndef NO_SCROLL */
@ -377,6 +425,14 @@ void btext_drawstring(const char *c)
btext_drawchar(*c++);
}
void btext_drawtext(const char *c, unsigned int len)
{
if (!boot_text_mapped)
return;
while (len--)
btext_drawchar(*c++);
}
void btext_drawhex(unsigned long v)
{
char *hex_table = "0123456789abcdef";

29
arch/powerpc/kernel/head_32.S
View File

@ -153,6 +153,9 @@ __after_mmu_off:
bl flush_tlbs
bl initial_bats
#if !defined(CONFIG_APUS) && defined(CONFIG_BOOTX_TEXT)
bl setup_disp_bat
#endif
/*
* Call setup_cpu for CPU 0 and initialize 6xx Idle
@ -1306,6 +1309,32 @@ initial_bats:
blr
#if !defined(CONFIG_APUS) && defined(CONFIG_BOOTX_TEXT)
setup_disp_bat:
/*
* setup the display bat prepared for us in prom.c
*/
mflr r8
bl reloc_offset
mtlr r8
addis r8,r3,disp_BAT@ha
addi r8,r8,disp_BAT@l
cmpwi cr0,r8,0
beqlr
lwz r11,0(r8)
lwz r8,4(r8)
mfspr r9,SPRN_PVR
rlwinm r9,r9,16,16,31 /* r9 = 1 for 601, 4 for 604 */
cmpwi 0,r9,1
beq 1f
mtspr SPRN_DBAT3L,r8
mtspr SPRN_DBAT3U,r11
blr
1: mtspr SPRN_IBAT3L,r8
mtspr SPRN_IBAT3U,r11
blr
#endif /* !defined(CONFIG_APUS) && defined(CONFIG_BOOTX_TEXT) */
#ifdef CONFIG_8260
/* Jump into the system reset for the rom.
* We first disable the MMU, and then jump to the ROM reset address.

28
arch/powerpc/kernel/setup_32.c
View File

@ -40,6 +40,7 @@
#include <asm/xmon.h>
#include <asm/time.h>
#include <asm/serial.h>
#include <asm/udbg.h>
#include "setup.h"
@ -173,12 +174,23 @@ void __init platform_init(void)
*/
void __init machine_init(unsigned long dt_ptr, unsigned long phys)
{
/* If btext is enabled, we might have a BAT setup for early display,
* thus we do enable some very basic udbg output
*/
#ifdef CONFIG_BOOTX_TEXT
udbg_putc = btext_drawchar;
#endif
/* Do some early initialization based on the flat device tree */
early_init_devtree(__va(dt_ptr));
/* Check default command line */
#ifdef CONFIG_CMDLINE
strlcpy(cmd_line, CONFIG_CMDLINE, sizeof(cmd_line));
if (cmd_line[0] == 0)
strlcpy(cmd_line, CONFIG_CMDLINE, sizeof(cmd_line));
#endif /* CONFIG_CMDLINE */
/* Base init based on machine type */
platform_init();
#ifdef CONFIG_6xx
@ -294,21 +306,11 @@ void __init setup_arch(char **cmdline_p)
smp_setup_cpu_maps();
#ifdef CONFIG_BOOTX_TEXT
init_boot_display();
#endif
#ifdef CONFIG_PPC_PMAC
/* This could be called "early setup arch", it must be done
* now because xmon need it
*/
if (_machine == _MACH_Pmac)
pmac_feature_init(); /* New cool way */
#endif
#ifdef CONFIG_XMON_DEFAULT
xmon_init(1);
#endif
/* Register early console */
register_early_udbg_console();
#if defined(CONFIG_KGDB)
if (ppc_md.kgdb_map_scc)

4
arch/powerpc/kernel/setup_64.c
View File

@ -474,10 +474,6 @@ void __init setup_system(void)
*/
finish_device_tree();
#ifdef CONFIG_BOOTX_TEXT
init_boot_display();
#endif
/*
* Initialize xmon
*/

8
arch/powerpc/kernel/udbg.c
View File

@ -16,8 +16,8 @@
#include <linux/console.h>
#include <asm/processor.h>
void (*udbg_putc)(unsigned char c);
unsigned char (*udbg_getc)(void);
void (*udbg_putc)(char c);
char (*udbg_getc)(void);
int (*udbg_getc_poll)(void);
/* udbg library, used by xmon et al */
@ -78,7 +78,7 @@ int udbg_read(char *buf, int buflen)
#define UDBG_BUFSIZE 256
void udbg_printf(const char *fmt, ...)
{
unsigned char buf[UDBG_BUFSIZE];
char buf[UDBG_BUFSIZE];
va_list args;
va_start(args, fmt);
@ -116,6 +116,8 @@ void __init disable_early_printk(void)
/* called by setup_system */
void register_early_udbg_console(void)
{
if (early_console_initialized)
return;
early_console_initialized = 1;
register_console(&udbg_console);
}

4
arch/powerpc/kernel/udbg_16550.c
View File

@ -47,7 +47,7 @@ struct NS16550 {
static volatile struct NS16550 __iomem *udbg_comport;
static void udbg_550_putc(unsigned char c)
static void udbg_550_putc(char c)
{
if (udbg_comport) {
while ((in_8(&udbg_comport->lsr) & LSR_THRE) == 0)
@ -69,7 +69,7 @@ static int udbg_550_getc_poll(void)
return -1;
}
static unsigned char udbg_550_getc(void)
static char udbg_550_getc(void)
{
if (udbg_comport) {
while ((in_8(&udbg_comport->lsr) & LSR_DR) == 0)

5
arch/powerpc/mm/init_32.c
View File

@ -188,6 +188,11 @@ void __init MMU_init(void)
if (ppc_md.progress)
ppc_md.progress("MMU:exit", 0x211);
/* From now on, btext is no longer BAT mapped if it was at all */
#ifdef CONFIG_BOOTX_TEXT
btext_unmap();
#endif
}
/* This is only called until mem_init is done. */

1
arch/powerpc/platforms/powermac/Makefile
View File

@ -7,3 +7,4 @@ obj-$(CONFIG_NVRAM) += nvram.o
# ppc64 pmac doesn't define CONFIG_NVRAM but needs nvram stuff
obj-$(CONFIG_PPC64) += nvram.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_PPC_MERGE) += udbg_scc.o udbg_adb.o

68
arch/powerpc/platforms/powermac/feature.c
View File

@ -2607,6 +2607,8 @@ static int __init probe_motherboard(void)
*/
static void __init probe_uninorth(void)
{
u32 *addrp;
phys_addr_t address;
unsigned long actrl;
/* Locate core99 Uni-N */
@ -2616,20 +2618,23 @@ static void __init probe_uninorth(void)
uninorth_node = of_find_node_by_name(NULL, "u3");
uninorth_u3 = 1;
}
if (uninorth_node && uninorth_node->n_addrs > 0) {
unsigned long address = uninorth_node->addrs[0].address;
uninorth_base = ioremap(address, 0x40000);
uninorth_rev = in_be32(UN_REG(UNI_N_VERSION));
if (uninorth_u3)
u3_ht = ioremap(address + U3_HT_CONFIG_BASE, 0x1000);
} else
uninorth_node = NULL;
if (!uninorth_node)
if (uninorth_node == NULL)
return;
printk(KERN_INFO "Found %s memory controller & host bridge, revision: %d\n",
uninorth_u3 ? "U3" : "UniNorth", uninorth_rev);
addrp = (u32 *)get_property(uninorth_node, "reg", NULL);
if (addrp == NULL)
return;
address = of_translate_address(uninorth_node, addrp);
if (address == 0)
return;
uninorth_base = ioremap(address, 0x40000);
uninorth_rev = in_be32(UN_REG(UNI_N_VERSION));
if (uninorth_u3)
u3_ht = ioremap(address + U3_HT_CONFIG_BASE, 0x1000);
printk(KERN_INFO "Found %s memory controller & host bridge,"
" revision: %d\n", uninorth_u3 ? "U3" : "UniNorth",
uninorth_rev);
printk(KERN_INFO "Mapped at 0x%08lx\n", (unsigned long)uninorth_base);
/* Set the arbitrer QAck delay according to what Apple does
@ -2653,18 +2658,17 @@ static void __init probe_one_macio(const char *name, const char *compat, int typ
{
struct device_node* node;
int i;
volatile u32 __iomem * base;
u32* revp;
volatile u32 __iomem *base;
u32 *addrp, *revp;
phys_addr_t addr;
u64 size;
node = find_devices(name);
if (!node || !node->n_addrs)
return;
if (compat)
do {
if (device_is_compatible(node, compat))
break;
node = node->next;
} while (node);
for (node = NULL; (node = of_find_node_by_name(node, name)) != NULL;) {
if (!compat)
break;
if (device_is_compatible(node, compat))
break;
}
if (!node)
return;
for(i=0; i<MAX_MACIO_CHIPS; i++) {
@ -2673,14 +2677,28 @@ static void __init probe_one_macio(const char *name, const char *compat, int typ
if (macio_chips[i].of_node == node)
return;
}
if (i >= MAX_MACIO_CHIPS) {
printk(KERN_ERR "pmac_feature: Please increase MAX_MACIO_CHIPS !\n");
printk(KERN_ERR "pmac_feature: %s skipped\n", node->full_name);
return;
}
base = ioremap(node->addrs[0].address, node->addrs[0].size);
addrp = of_get_pci_address(node, 0, &size);
if (addrp == NULL) {
printk(KERN_ERR "pmac_feature: %s: can't find base !\n",
node->full_name);
return;
}
addr = of_translate_address(node, addrp);
if (addr == 0) {
printk(KERN_ERR "pmac_feature: %s, can't translate base !\n",
node->full_name);
return;
}
base = ioremap(addr, (unsigned long)size);
if (!base) {
printk(KERN_ERR "pmac_feature: Can't map mac-io chip !\n");
printk(KERN_ERR "pmac_feature: %s, can't map mac-io chip !\n",
node->full_name);
return;
}
if (type == macio_keylargo) {

27
arch/powerpc/platforms/powermac/low_i2c.c
View File

@ -36,7 +36,7 @@
#ifdef DEBUG
#define DBG(x...) do {\
printk(KERN_DEBUG "KW:" x); \
printk(KERN_DEBUG "low_i2c:" x); \
} while(0)
#else
#define DBG(x...)
@ -342,7 +342,7 @@ static int keywest_low_i2c_func(struct low_i2c_host *host, u8 addr, u8 subaddr,
static void keywest_low_i2c_add(struct device_node *np)
{
struct low_i2c_host *host = find_low_i2c_host(NULL);
u32 *psteps, *prate, steps, aoffset = 0;
u32 *psteps, *prate, *addrp, steps;
struct device_node *parent;
if (host == NULL) {
@ -352,6 +352,16 @@ static void keywest_low_i2c_add(struct device_node *np)
}
memset(host, 0, sizeof(*host));
/* Apple is kind enough to provide a valid AAPL,address property
* on all i2c keywest nodes so far ... we would have to fallback
* to macio parsing if that wasn't the case
*/
addrp = (u32 *)get_property(np, "AAPL,address", NULL);
if (addrp == NULL) {
printk(KERN_ERR "low_i2c: Can't find address for %s\n",
np->full_name);
return;
}
init_MUTEX(&host->mutex);
host->np = of_node_get(np);
psteps = (u32 *)get_property(np, "AAPL,address-step", NULL);
@ -360,12 +370,10 @@ static void keywest_low_i2c_add(struct device_node *np)
steps >>= 1;
parent = of_get_parent(np);
host->num_channels = 1;
if (parent && parent->name[0] == 'u') {
if (parent && parent->name[0] == 'u')
host->num_channels = 2;
aoffset = 3;
}
/* Select interface rate */
host->speed = KW_I2C_MODE_100KHZ;
host->speed = KW_I2C_MODE_25KHZ;
prate = (u32 *)get_property(np, "AAPL,i2c-rate", NULL);
if (prate) switch(*prate) {
case 100:
@ -379,9 +387,12 @@ static void keywest_low_i2c_add(struct device_node *np)
break;
}
printk(KERN_INFO "low_i2c: Bus %s found at 0x%08x, %d channels,"
" speed = %d KHz\n",
np->full_name, *addrp, host->num_channels, prate ? *prate : 25);
host->mode = pmac_low_i2c_mode_std;
host->base = ioremap(np->addrs[0].address + aoffset,
np->addrs[0].size);
host->base = ioremap((*addrp), 0x1000);
host->func = keywest_low_i2c_func;
}

2
arch/powerpc/platforms/powermac/pic.c
View File

@ -459,7 +459,7 @@ void __init pmac_pic_init(void)
mpic_setup_cascade(irqctrler2->intrs[0].line,
pmac_u3_cascade, mpic2);
}
#if defined(CONFIG_XMON) && defined(CONFIG_PPC32)
#ifdef CONFIG_XMON
{
struct device_node* pswitch;
int nmi_irq;

52
arch/powerpc/platforms/powermac/setup.c
View File

@ -77,6 +77,7 @@
#include <asm/pmc.h>
#include <asm/mpic.h>
#include <asm/lmb.h>
#include <asm/udbg.h>
#include "pmac.h"
@ -322,16 +323,6 @@ void __init pmac_setup_arch(void)
l2cr_init();
#endif /* CONFIG_PPC32 */
#ifdef CONFIG_PPC64
/* Probe motherboard chipset */
/* this is done earlier in setup_arch for 32-bit */
pmac_feature_init();
/* We can NAP */
powersave_nap = 1;
printk(KERN_INFO "Using native/NAP idle loop\n");
#endif
#ifdef CONFIG_KGDB
zs_kgdb_hook(0);
#endif
@ -622,13 +613,26 @@ static void __init pmac_init_early(void)
* and call ioremap
*/
hpte_init_native();
#endif
/* Init SCC */
if (strstr(cmd_line, "sccdbg")) {
sccdbg = 1;
udbg_init_scc(NULL);
/* Enable early btext debug if requested */
if (strstr(cmd_line, "btextdbg")) {
udbg_adb_init_early();
register_early_udbg_console();
}
/* Probe motherboard chipset */
pmac_feature_init();
/* We can NAP */
powersave_nap = 1;
printk(KERN_INFO "Using native/NAP idle loop\n");
/* Initialize debug stuff */
udbg_scc_init(!!strstr(cmd_line, "sccdbg"));
udbg_adb_init(!!strstr(cmd_line, "btextdbg"));
#ifdef CONFIG_PPC64
/* Setup interrupt mapping options */
ppc64_interrupt_controller = IC_OPEN_PIC;
@ -638,19 +642,8 @@ static void __init pmac_init_early(void)
static void __init pmac_progress(char *s, unsigned short hex)
{
#ifdef CONFIG_PPC64
if (sccdbg) {
udbg_puts(s);
udbg_puts("\n");
return;
}
#endif
#ifdef CONFIG_BOOTX_TEXT
if (boot_text_mapped) {
btext_drawstring(s);
btext_drawchar('\n');
}
#endif /* CONFIG_BOOTX_TEXT */
udbg_puts(s);
udbg_puts("\n");
}
/*
@ -735,7 +728,8 @@ static int __init pmac_probe(int platform)
}
#ifdef CONFIG_PPC64
static int pmac_probe_mode(struct pci_bus *bus)
/* Move that to pci.c */
static int pmac_pci_probe_mode(struct pci_bus *bus)
{
struct device_node *node = bus->sysdata;
@ -771,7 +765,7 @@ struct machdep_calls __initdata pmac_md = {
.check_legacy_ioport = pmac_check_legacy_ioport,
.progress = pmac_progress,
#ifdef CONFIG_PPC64
.pci_probe_mode = pmac_probe_mode,
.pci_probe_mode = pmac_pci_probe_mode,
.idle_loop = native_idle,
.enable_pmcs = power4_enable_pmcs,
#ifdef CONFIG_KEXEC

218
arch/powerpc/platforms/powermac/udbg_adb.c Normal file
View File

@ -0,0 +1,218 @@
#include <linux/config.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/bitops.h>
#include <linux/ptrace.h>
#include <linux/adb.h>
#include <linux/pmu.h>
#include <linux/cuda.h>
#include <asm/machdep.h>
#include <asm/io.h>
#include <asm/page.h>
#include <asm/xmon.h>
#include <asm/prom.h>
#include <asm/bootx.h>
#include <asm/machdep.h>
#include <asm/errno.h>
#include <asm/pmac_feature.h>
#include <asm/processor.h>
#include <asm/delay.h>
#include <asm/btext.h>
#include <asm/time.h>
#include <asm/udbg.h>
/*
* This implementation is "special", it can "patch" the current
* udbg implementation and work on top of it. It must thus be
* initialized last
*/
static void (*udbg_adb_old_putc)(char c);
static char (*udbg_adb_old_getc)(void);
static int (*udbg_adb_old_getc_poll)(void);
static enum {
input_adb_none,
input_adb_pmu,
input_adb_cuda,
} input_type = input_adb_none;
static int udbg_adb_use_btext;
int xmon_wants_key, xmon_adb_keycode;
static inline void udbg_adb_poll(void)
{
#ifdef CONFIG_ADB_PMU
if (input_type == input_adb_pmu)
pmu_poll_adb();
#endif /* CONFIG_ADB_PMU */
#ifdef CONFIG_ADB_CUDA
if (input_type == input_adb_cuda)
cuda_poll();
#endif /* CONFIG_ADB_CUDA */
}
#ifdef CONFIG_BOOTX_TEXT
static int xmon_adb_shiftstate;
static unsigned char xmon_keytab[128] =
"asdfhgzxcv\000bqwer" /* 0x00 - 0x0f */
"yt123465=97-80]o" /* 0x10 - 0x1f */
"u[ip\rlj'k;\\,/nm." /* 0x20 - 0x2f */
"\t `\177\0\033\0\0\0\0\0\0\0\0\0\0" /* 0x30 - 0x3f */
"\0.\0*\0+\0\0\0\0\0/\r\0-\0" /* 0x40 - 0x4f */
"\0\0000123456789\0\0\0"; /* 0x50 - 0x5f */
static unsigned char xmon_shift_keytab[128] =
"ASDFHGZXCV\000BQWER" /* 0x00 - 0x0f */
"YT!@#$^%+(&_*)}O" /* 0x10 - 0x1f */
"U{IP\rLJ\"K:|<?NM>" /* 0x20 - 0x2f */
"\t ~\177\0\033\0\0\0\0\0\0\0\0\0\0" /* 0x30 - 0x3f */
"\0.\0*\0+\0\0\0\0\0/\r\0-\0" /* 0x40 - 0x4f */
"\0\0000123456789\0\0\0"; /* 0x50 - 0x5f */
static char udbg_adb_local_getc(void)
{
int k, t, on;
xmon_wants_key = 1;
for (;;) {
xmon_adb_keycode = -1;
t = 0;
on = 0;
k = -1;
do {
if (--t < 0) {
on = 1 - on;
btext_drawchar(on? 0xdb: 0x20);
btext_drawchar('\b');
t = 200000;
}
udbg_adb_poll();
if (udbg_adb_old_getc_poll)
k = udbg_adb_old_getc_poll();
} while (k == -1 && xmon_adb_keycode == -1);
if (on)
btext_drawstring(" \b");
if (k != -1)
return k;
k = xmon_adb_keycode;
/* test for shift keys */
if ((k & 0x7f) == 0x38 || (k & 0x7f) == 0x7b) {
xmon_adb_shiftstate = (k & 0x80) == 0;
continue;
}
if (k >= 0x80)
continue; /* ignore up transitions */
k = (xmon_adb_shiftstate? xmon_shift_keytab: xmon_keytab)[k];
if (k != 0)
break;
}
xmon_wants_key = 0;
return k;
}
#endif /* CONFIG_BOOTX_TEXT */
static char udbg_adb_getc(void)
{
#ifdef CONFIG_BOOTX_TEXT
if (udbg_adb_use_btext && input_type != input_adb_none)
return udbg_adb_local_getc();
#endif
if (udbg_adb_old_getc)
return udbg_adb_old_getc();
return -1;
}
/* getc_poll() is not really used, unless you have the xmon-over modem
* hack that doesn't quite concern us here, thus we just poll the low level
* ADB driver to prevent it from timing out and call back the original poll
* routine.
*/
static int udbg_adb_getc_poll(void)
{
udbg_adb_poll();
if (udbg_adb_old_getc_poll)
return udbg_adb_old_getc_poll();
return -1;
}
static void udbg_adb_putc(char c)
{
#ifdef CONFIG_BOOTX_TEXT
if (udbg_adb_use_btext)
btext_drawchar(c);
#endif
if (udbg_adb_old_putc)
return udbg_adb_old_putc(c);
}
void udbg_adb_init_early(void)
{
#ifdef CONFIG_BOOTX_TEXT
if (btext_find_display(1) == 0) {
udbg_adb_use_btext = 1;
udbg_putc = udbg_adb_putc;
}
#endif
}
int udbg_adb_init(int force_btext)
{
struct device_node *np;
/* Capture existing callbacks */
udbg_adb_old_putc = udbg_putc;
udbg_adb_old_getc = udbg_getc;
udbg_adb_old_getc_poll = udbg_getc_poll;
/* Check if our early init was already called */
if (udbg_adb_old_putc == udbg_adb_putc ||
udbg_adb_old_putc == btext_drawchar)
udbg_adb_old_putc = NULL;
/* Set ours as output */
udbg_putc = udbg_adb_putc;
udbg_getc = udbg_adb_getc;
udbg_getc_poll = udbg_adb_getc_poll;
#ifdef CONFIG_BOOTX_TEXT
/* Check if we should use btext output */
if (btext_find_display(force_btext) == 0)
udbg_adb_use_btext = 1;
#endif
/* See if there is a keyboard in the device tree with a parent
* of type "adb". If not, we return a failure, but we keep the
* bext output set for now
*/
for (np = NULL; (np = of_find_node_by_name(np, "keyboard")) != NULL;) {
struct device_node *parent = of_get_parent(np);
int found = (parent && !strcmp(parent->type, "adb") == 0);
of_node_put(parent);
if (found)
break;
}
if (np == NULL)
return -ENODEV;
of_node_put(np);
#ifdef CONFIG_ADB_PMU
if (find_via_pmu())
input_type = input_adb_pmu;
#endif
#ifdef CONFIG_ADB_CUDA
if (find_via_cuda())
input_type = input_adb_cuda;
#endif
/* Same as above: nothing found, keep btext set for output */
if (input_type == input_adb_none)
return -ENODEV;
return 0;
}

64
arch/powerpc/kernel/udbg_scc.c → arch/powerpc/platforms/powermac/udbg_scc.c
View File

@ -25,7 +25,7 @@ extern void real_writeb(u8 data, volatile u8 __iomem *addr);
static volatile u8 __iomem *sccc;
static volatile u8 __iomem *sccd;
static void udbg_scc_putc(unsigned char c)
static void udbg_scc_putc(char c)
{
if (sccc) {
while ((in_8(sccc) & SCC_TXRDY) == 0)
@ -47,7 +47,7 @@ static int udbg_scc_getc_poll(void)
return -1;
}
static unsigned char udbg_scc_getc(void)
static char udbg_scc_getc(void)
{
if (sccc) {
while ((in_8(sccc) & SCC_RXRDY) == 0)
@ -67,38 +67,59 @@ static unsigned char scc_inittab[] = {
3, 0xc1, /* rx enable, 8 bits */
};
void udbg_init_scc(struct device_node *np)
void udbg_scc_init(int force_scc)
{
u32 *reg;
unsigned long addr;
struct device_node *stdout = NULL, *escc = NULL, *macio = NULL;
struct device_node *ch, *ch_def = NULL, *ch_a = NULL;
char *path;
int i, x;
if (np == NULL)
np = of_find_node_by_name(NULL, "escc");
if (np == NULL || np->parent == NULL)
return;
escc = of_find_node_by_name(NULL, "escc");
if (escc == NULL)
goto bail;
macio = of_get_parent(escc);
if (macio == NULL)
goto bail;
path = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
if (path != NULL)
stdout = of_find_node_by_path(path);
for (ch = NULL; (ch = of_get_next_child(escc, ch)) != NULL;) {
if (ch == stdout)
ch_def = of_node_get(ch);
if (strcmp(ch->name, "ch-a") == 0)
ch_a = of_node_get(ch);
}
if (ch_def == NULL && !force_scc)
goto bail;
ch = ch_def ? ch_def : ch_a;
udbg_printf("found SCC...\n");
/* Get address within mac-io ASIC */
reg = (u32 *)get_property(np, "reg", NULL);
reg = (u32 *)get_property(escc, "reg", NULL);
if (reg == NULL)
return;
goto bail;
addr = reg[0];
udbg_printf("local addr: %lx\n", addr);
/* Get address of mac-io PCI itself */
reg = (u32 *)get_property(np->parent, "assigned-addresses", NULL);
reg = (u32 *)get_property(macio, "assigned-addresses", NULL);
if (reg == NULL)
return;
goto bail;
addr += reg[2];
udbg_printf("final addr: %lx\n", addr);
/* Lock the serial port */
pmac_call_feature(PMAC_FTR_SCC_ENABLE, ch,
PMAC_SCC_ASYNC | PMAC_SCC_FLAG_XMON, 1);
/* Setup for 57600 8N1 */
addr += 0x20;
if (ch == ch_a)
addr += 0x20;
sccc = (volatile u8 * __iomem) ioremap(addr & PAGE_MASK, PAGE_SIZE) ;
sccc += addr & ~PAGE_MASK;
sccd = sccc + 0x10;
udbg_printf("ioremap result sccc: %p\n", sccc);
mb();
for (i = 20000; i != 0; --i)
@ -113,9 +134,17 @@ void udbg_init_scc(struct device_node *np)
udbg_getc_poll = udbg_scc_getc_poll;
udbg_puts("Hello World !\n");
bail:
of_node_put(macio);
of_node_put(escc);
of_node_put(stdout);
of_node_put(ch_def);
of_node_put(ch_a);
}
static void udbg_real_scc_putc(unsigned char c)
#ifdef CONFIG_PPC64
static void udbg_real_scc_putc(char c)
{
while ((real_readb(sccc) & SCC_TXRDY) == 0)
;
@ -133,3 +162,4 @@ void udbg_init_pmac_realmode(void)
udbg_getc = NULL;
udbg_getc_poll = NULL;
}
#endif /* CONFIG_PPC64 */

8
arch/powerpc/platforms/pseries/lpar.c
View File

@ -61,7 +61,7 @@ extern void pSeries_find_serial_port(void);
int vtermno; /* virtual terminal# for udbg */
#define __ALIGNED__ __attribute__((__aligned__(sizeof(long))))
static void udbg_hvsi_putc(unsigned char c)
static void udbg_hvsi_putc(char c)
{
/* packet's seqno isn't used anyways */
uint8_t packet[] __ALIGNED__ = { 0xff, 5, 0, 0, c };
@ -112,7 +112,7 @@ static int udbg_hvsi_getc_poll(void)
return ch;
}
static unsigned char udbg_hvsi_getc(void)
static char udbg_hvsi_getc(void)
{
int ch;
for (;;) {
@ -128,7 +128,7 @@ static unsigned char udbg_hvsi_getc(void)
}
}
static void udbg_putcLP(unsigned char c)
static void udbg_putcLP(char c)
{
char buf[16];
unsigned long rc;
@ -173,7 +173,7 @@ static int udbg_getc_pollLP(void)
return ch;
}
static unsigned char udbg_getcLP(void)
static char udbg_getcLP(void)
{
int ch;
for (;;) {

8
arch/powerpc/xmon/Makefile
View File

@ -3,9 +3,5 @@
ifdef CONFIG_PPC64
EXTRA_CFLAGS += -mno-minimal-toc
endif
obj-$(CONFIG_8xx) += start_8xx.o
obj-$(CONFIG_6xx) += start_32.o
obj-$(CONFIG_4xx) += start_32.o
obj-$(CONFIG_PPC64) += start_64.o
obj-y += xmon.o ppc-dis.o ppc-opc.o setjmp.o nonstdio.o
obj-y += xmon.o ppc-dis.o ppc-opc.o setjmp.o start.o \
nonstdio.o

0
arch/powerpc/xmon/start_64.c → arch/powerpc/xmon/start.c
View File

441
arch/powerpc/xmon/start_32.c
View File

@ -1,441 +0,0 @@
/*
* Copyright (C) 1996 Paul Mackerras.
*/
#include <linux/config.h>
#include <linux/string.h>
#include <asm/machdep.h>
#include <asm/io.h>
#include <asm/page.h>
#include <linux/adb.h>
#include <linux/pmu.h>
#include <linux/cuda.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/bitops.h>
#include <asm/xmon.h>
#include <asm/prom.h>
#include <asm/bootx.h>
#include <asm/machdep.h>
#include <asm/errno.h>
#include <asm/pmac_feature.h>
#include <asm/processor.h>
#include <asm/delay.h>
#include <asm/btext.h>
#include <asm/time.h>
#include "nonstdio.h"
static volatile unsigned char __iomem *sccc, *sccd;
unsigned int TXRDY, RXRDY, DLAB;
static int use_serial;
static int use_screen;
static int via_modem;
static int xmon_use_sccb;
static struct device_node *channel_node;
void buf_access(void)
{
if (DLAB)
sccd[3] &= ~DLAB; /* reset DLAB */
}
extern int adb_init(void);
#ifdef CONFIG_PPC_CHRP
/*
* This looks in the "ranges" property for the primary PCI host bridge
* to find the physical address of the start of PCI/ISA I/O space.
* It is basically a cut-down version of pci_process_bridge_OF_ranges.
*/
static unsigned long chrp_find_phys_io_base(void)
{
struct device_node *node;
unsigned int *ranges;
unsigned long base = CHRP_ISA_IO_BASE;
int rlen = 0;
int np;
node = find_devices("isa");
if (node != NULL) {
node = node->parent;
if (node == NULL || node->type == NULL
|| strcmp(node->type, "pci") != 0)
node = NULL;
}
if (node == NULL)
node = find_devices("pci");
if (node == NULL)
return base;
ranges = (unsigned int *) get_property(node, "ranges", &rlen);
np = prom_n_addr_cells(node) + 5;
while ((rlen -= np * sizeof(unsigned int)) >= 0) {
if ((ranges[0] >> 24) == 1 && ranges[2] == 0) {
/* I/O space starting at 0, grab the phys base */
base = ranges[np - 3];
break;
}
ranges += np;
}
return base;
}
#endif /* CONFIG_PPC_CHRP */
void xmon_map_scc(void)
{
#ifdef CONFIG_PPC_MULTIPLATFORM
volatile unsigned char __iomem *base;
if (_machine == _MACH_Pmac) {
struct device_node *np;
unsigned long addr;
#ifdef CONFIG_BOOTX_TEXT
if (!use_screen && !use_serial
&& !machine_is_compatible("iMac")) {
/* see if there is a keyboard in the device tree
with a parent of type "adb" */
for (np = find_devices("keyboard"); np; np = np->next)
if (np->parent && np->parent->type
&& strcmp(np->parent->type, "adb") == 0)
break;
/* needs to be hacked if xmon_printk is to be used
from within find_via_pmu() */
#ifdef CONFIG_ADB_PMU
if (np != NULL && boot_text_mapped && find_via_pmu())
use_screen = 1;
#endif
#ifdef CONFIG_ADB_CUDA
if (np != NULL && boot_text_mapped && find_via_cuda())
use_screen = 1;
#endif
}
if (!use_screen && (np = find_devices("escc")) != NULL) {
/*
* look for the device node for the serial port
* we're using and see if it says it has a modem
*/
char *name = xmon_use_sccb? "ch-b": "ch-a";
char *slots;
int l;
np = np->child;
while (np != NULL && strcmp(np->name, name) != 0)
np = np->sibling;
if (np != NULL) {
/* XXX should parse this properly */
channel_node = np;
slots = get_property(np, "slot-names", &l);
if (slots != NULL && l >= 10
&& strcmp(slots+4, "Modem") == 0)
via_modem = 1;
}
}
btext_drawstring("xmon uses ");
if (use_screen)
btext_drawstring("screen and keyboard\n");
else {
if (via_modem)
btext_drawstring("modem on ");
btext_drawstring(xmon_use_sccb? "printer": "modem");
btext_drawstring(" port\n");
}
#endif /* CONFIG_BOOTX_TEXT */
#ifdef CHRP_ESCC
addr = 0xc1013020;
#else
addr = 0xf3013020;
#endif
TXRDY = 4;
RXRDY = 1;
np = find_devices("mac-io");
if (np && np->n_addrs)
addr = np->addrs[0].address + 0x13020;
base = (volatile unsigned char *) ioremap(addr & PAGE_MASK, PAGE_SIZE);
sccc = base + (addr & ~PAGE_MASK);
sccd = sccc + 0x10;
} else {
base = (volatile unsigned char *) isa_io_base;
#ifdef CONFIG_PPC_CHRP
if (_machine == _MACH_chrp)
base = (volatile unsigned char __iomem *)
ioremap(chrp_find_phys_io_base(), 0x1000);
#endif
sccc = base + 0x3fd;
sccd = base + 0x3f8;
if (xmon_use_sccb) {
sccc -= 0x100;
sccd -= 0x100;
}
TXRDY = 0x20;
RXRDY = 1;
DLAB = 0x80;
}
#elif defined(CONFIG_GEMINI)
/* should already be mapped by the kernel boot */
sccc = (volatile unsigned char __iomem *) 0xffeffb0d;
sccd = (volatile unsigned char __iomem *) 0xffeffb08;
TXRDY = 0x20;
RXRDY = 1;
DLAB = 0x80;
#elif defined(CONFIG_405GP)
sccc = (volatile unsigned char __iomem *)0xef600305;
sccd = (volatile unsigned char __iomem *)0xef600300;
TXRDY = 0x20;
RXRDY = 1;
DLAB = 0x80;
#endif /* platform */
}
static int scc_initialized = 0;
void xmon_init_scc(void);
extern void cuda_poll(void);
static inline void do_poll_adb(void)
{
#ifdef CONFIG_ADB_PMU
if (sys_ctrler == SYS_CTRLER_PMU)
pmu_poll_adb();
#endif /* CONFIG_ADB_PMU */
#ifdef CONFIG_ADB_CUDA
if (sys_ctrler == SYS_CTRLER_CUDA)
cuda_poll();
#endif /* CONFIG_ADB_CUDA */
}
int xmon_write(void *ptr, int nb)
{
char *p = ptr;
int i, c, ct;
#ifdef CONFIG_SMP
static unsigned long xmon_write_lock;
int lock_wait = 1000000;
int locked;
while ((locked = test_and_set_bit(0, &xmon_write_lock)) != 0)
if (--lock_wait == 0)
break;
#endif
#ifdef CONFIG_BOOTX_TEXT
if (use_screen) {
/* write it on the screen */
for (i = 0; i < nb; ++i)
btext_drawchar(*p++);
goto out;
}
#endif
if (!scc_initialized)
xmon_init_scc();
ct = 0;
for (i = 0; i < nb; ++i) {
while ((*sccc & TXRDY) == 0)
do_poll_adb();
c = p[i];
if (c == '\n' && !ct) {
c = '\r';
ct = 1;
--i;
} else {
ct = 0;
}
buf_access();
*sccd = c;
eieio();
}
out:
#ifdef CONFIG_SMP
if (!locked)
clear_bit(0, &xmon_write_lock);
#endif
return nb;
}
int xmon_wants_key;
int xmon_adb_keycode;
#ifdef CONFIG_BOOTX_TEXT
static int xmon_adb_shiftstate;
static unsigned char xmon_keytab[128] =
"asdfhgzxcv\000bqwer" /* 0x00 - 0x0f */
"yt123465=97-80]o" /* 0x10 - 0x1f */
"u[ip\rlj'k;\\,/nm." /* 0x20 - 0x2f */
"\t `\177\0\033\0\0\0\0\0\0\0\0\0\0" /* 0x30 - 0x3f */
"\0.\0*\0+\0\0\0\0\0/\r\0-\0" /* 0x40 - 0x4f */
"\0\0000123456789\0\0\0"; /* 0x50 - 0x5f */
static unsigned char xmon_shift_keytab[128] =
"ASDFHGZXCV\000BQWER" /* 0x00 - 0x0f */
"YT!@#$^%+(&_*)}O" /* 0x10 - 0x1f */
"U{IP\rLJ\"K:|<?NM>" /* 0x20 - 0x2f */
"\t ~\177\0\033\0\0\0\0\0\0\0\0\0\0" /* 0x30 - 0x3f */
"\0.\0*\0+\0\0\0\0\0/\r\0-\0" /* 0x40 - 0x4f */
"\0\0000123456789\0\0\0"; /* 0x50 - 0x5f */
static int xmon_get_adb_key(void)
{
int k, t, on;
xmon_wants_key = 1;
for (;;) {
xmon_adb_keycode = -1;
t = 0;
on = 0;
do {
if (--t < 0) {
on = 1 - on;
btext_drawchar(on? 0xdb: 0x20);
btext_drawchar('\b');
t = 200000;
}
do_poll_adb();
} while (xmon_adb_keycode == -1);
k = xmon_adb_keycode;
if (on)
btext_drawstring(" \b");
/* test for shift keys */
if ((k & 0x7f) == 0x38 || (k & 0x7f) == 0x7b) {
xmon_adb_shiftstate = (k & 0x80) == 0;
continue;
}
if (k >= 0x80)
continue; /* ignore up transitions */
k = (xmon_adb_shiftstate? xmon_shift_keytab: xmon_keytab)[k];
if (k != 0)
break;
}
xmon_wants_key = 0;
return k;
}
#endif /* CONFIG_BOOTX_TEXT */
int xmon_readchar(void)
{
#ifdef CONFIG_BOOTX_TEXT
if (use_screen)
return xmon_get_adb_key();
#endif
if (!scc_initialized)
xmon_init_scc();
while ((*sccc & RXRDY) == 0)
do_poll_adb();
buf_access();
return *sccd;
}
int xmon_read_poll(void)
{
if ((*sccc & RXRDY) == 0) {
do_poll_adb();
return -1;
}
buf_access();
return *sccd;
}
static unsigned char scc_inittab[] = {
13, 0, /* set baud rate divisor */
12, 1,
14, 1, /* baud rate gen enable, src=rtxc */
11, 0x50, /* clocks = br gen */
5, 0xea, /* tx 8 bits, assert DTR & RTS */
4, 0x46, /* x16 clock, 1 stop */
3, 0xc1, /* rx enable, 8 bits */
};
void xmon_init_scc(void)
{
if ( _machine == _MACH_chrp )
{
sccd[3] = 0x83; eieio(); /* LCR = 8N1 + DLAB */
sccd[0] = 12; eieio(); /* DLL = 9600 baud */
sccd[1] = 0; eieio();
sccd[2] = 0; eieio(); /* FCR = 0 */
sccd[3] = 3; eieio(); /* LCR = 8N1 */
sccd[1] = 0; eieio(); /* IER = 0 */
}
else if ( _machine == _MACH_Pmac )
{
int i, x;
unsigned long timeout;
if (channel_node != 0)
pmac_call_feature(
PMAC_FTR_SCC_ENABLE,
channel_node,
PMAC_SCC_ASYNC | PMAC_SCC_FLAG_XMON, 1);
printk(KERN_INFO "Serial port locked ON by debugger !\n");
if (via_modem && channel_node != 0) {
unsigned int t0;
pmac_call_feature(
PMAC_FTR_MODEM_ENABLE,
channel_node, 0, 1);
printk(KERN_INFO "Modem powered up by debugger !\n");
t0 = get_tbl();
timeout = 3 * tb_ticks_per_sec;
if (timeout == 0)
/* assume 25MHz if tb_ticks_per_sec not set */
timeout = 75000000;
while (get_tbl() - t0 < timeout)
eieio();
}
/* use the B channel if requested */
if (xmon_use_sccb) {
sccc = (volatile unsigned char *)
((unsigned long)sccc & ~0x20);
sccd = sccc + 0x10;
}
for (i = 20000; i != 0; --i) {
x = *sccc; eieio();
}
*sccc = 9; eieio(); /* reset A or B side */
*sccc = ((unsigned long)sccc & 0x20)? 0x80: 0x40; eieio();
for (i = 0; i < sizeof(scc_inittab); ++i) {
*sccc = scc_inittab[i];
eieio();
}
}
scc_initialized = 1;
if (via_modem) {
for (;;) {
xmon_write("ATE1V1\r", 7);
if (xmon_expect("OK", 5)) {
xmon_write("ATA\r", 4);
if (xmon_expect("CONNECT", 40))
break;
}
xmon_write("+++", 3);
xmon_expect("OK", 3);
}
}
}
void xmon_enter(void)
{
#ifdef CONFIG_ADB_PMU
if (_machine == _MACH_Pmac) {
pmu_suspend();
}
#endif
}
void xmon_leave(void)
{
#ifdef CONFIG_ADB_PMU
if (_machine == _MACH_Pmac) {
pmu_resume();
}
#endif
}

44
arch/powerpc/xmon/start_8xx.c
View File

@ -1,44 +0,0 @@
/*
* Copyright (C) 1996 Paul Mackerras.
* Copyright (C) 2000 Dan Malek.
* Quick hack of Paul's code to make XMON work on 8xx processors. Lots
* of assumptions, like the SMC1 is used, it has been initialized by the
* loader at some point, and we can just stuff and suck bytes.
* We rely upon the 8xx uart driver to support us, as the interface
* changes between boot up and operational phases of the kernel.
*/
#include <linux/string.h>
#include <asm/machdep.h>
#include <asm/io.h>
#include <asm/page.h>
#include <linux/kernel.h>
#include <asm/8xx_immap.h>
#include <asm/mpc8xx.h>
#include <asm/commproc.h>
#include "nonstdio.h"
extern int xmon_8xx_write(char *str, int nb);
extern int xmon_8xx_read_poll(void);
extern int xmon_8xx_read_char(void);
void xmon_map_scc(void)
{
cpmp = (cpm8xx_t *)&(((immap_t *)IMAP_ADDR)->im_cpm);
}
void xmon_init_scc(void);
int xmon_write(void *ptr, int nb)
{
return(xmon_8xx_write(ptr, nb));
}
int xmon_readchar(void)
{
return xmon_8xx_read_char();
}
int xmon_read_poll(void)
{
return(xmon_8xx_read_poll());
}

3
arch/ppc/kernel/setup.c
View File

@ -744,6 +744,9 @@ void __init setup_arch(char **cmdline_p)
/* so udelay does something sensible, assume <= 1000 bogomips */
loops_per_jiffy = 500000000 / HZ;
if (ppc_md.init_early)
ppc_md.init_early();
#ifdef CONFIG_PPC_MULTIPLATFORM
/* This could be called "early setup arch", it must be done
* now because xmon need it

25
drivers/i2c/busses/i2c-keywest.c
View File

@ -505,16 +505,23 @@ static int
create_iface(struct device_node *np, struct device *dev)
{
unsigned long steps;
unsigned bsteps, tsize, i, nchan, addroffset;
unsigned bsteps, tsize, i, nchan;
struct keywest_iface* iface;
u32 *psteps, *prate;
u32 *psteps, *prate, *addrp;
int rc;
if (np->n_intrs < 1 || np->n_addrs < 1) {
printk(KERN_ERR "%s: Missing interrupt or address !\n",
if (np->n_intrs < 1) {
printk(KERN_ERR "%s: Missing interrupt !\n",
np->full_name);
return -ENODEV;
}
addrp = (u32 *)get_property(np, "AAPL,address", NULL);
if (addrp == NULL) {
printk(KERN_ERR "%s: Can't find address !\n",
np->full_name);
return -ENODEV;
}
if (pmac_low_i2c_lock(np))
return -ENODEV;
@ -525,13 +532,10 @@ create_iface(struct device_node *np, struct device *dev)
for (bsteps = 0; (steps & 0x01) == 0; bsteps++)
steps >>= 1;
if (np->parent->name[0] == 'u') {
if (np->parent->name[0] == 'u')
nchan = 2;
addroffset = 3;
} else {
addroffset = 0;
else
nchan = 1;
}
tsize = sizeof(struct keywest_iface) +
(sizeof(struct keywest_chan) + 4) * nchan;
@ -550,8 +554,7 @@ create_iface(struct device_node *np, struct device *dev)
iface->irq = np->intrs[0].line;
iface->channels = (struct keywest_chan *)
(((unsigned long)(iface + 1) + 3UL) & ~3UL);
iface->base = ioremap(np->addrs[0].address + addroffset,
np->addrs[0].size);
iface->base = ioremap(*addrp, 0x1000);
if (!iface->base) {
printk(KERN_ERR "i2c-keywest: can't map inteface !\n");
kfree(iface);

48
drivers/macintosh/via-cuda.c
View File

@ -127,39 +127,34 @@ struct adb_driver via_cuda_driver = {
#endif /* CONFIG_ADB */
#ifdef CONFIG_PPC
int __init
find_via_cuda(void)
int __init find_via_cuda(void)
{
int err;
struct adb_request req;
phys_addr_t taddr;
u32 *reg;
int err;
if (vias != 0)
return 1;
vias = find_devices("via-cuda");
vias = of_find_node_by_name(NULL, "via-cuda");
if (vias == 0)
return 0;
if (vias->next != 0)
printk(KERN_WARNING "Warning: only using 1st via-cuda\n");
#if 0
{ int i;
printk("find_via_cuda: node = %p, addrs =", vias->node);
for (i = 0; i < vias->n_addrs; ++i)
printk(" %x(%x)", vias->addrs[i].address, vias->addrs[i].size);
printk(", intrs =");
for (i = 0; i < vias->n_intrs; ++i)
printk(" %x", vias->intrs[i].line);
printk("\n"); }
#endif
if (vias->n_addrs != 1 || vias->n_intrs != 1) {
printk(KERN_ERR "via-cuda: expecting 1 address (%d) and 1 interrupt (%d)\n",
vias->n_addrs, vias->n_intrs);
if (vias->n_addrs < 1 || vias->n_intrs < 1)
return 0;
reg = (u32 *)get_property(vias, "reg", NULL);
if (reg == NULL) {
printk(KERN_ERR "via-cuda: No \"reg\" property !\n");
goto fail;
}
taddr = of_translate_address(vias, reg);
if (taddr == 0) {
printk(KERN_ERR "via-cuda: Can't translate address !\n");
goto fail;
}
via = ioremap(taddr, 0x2000);
if (via == NULL) {
printk(KERN_ERR "via-cuda: Can't map address !\n");
goto fail;
}
via = ioremap(vias->addrs->address, 0x2000);
cuda_state = idle;
sys_ctrler = SYS_CTRLER_CUDA;
@ -185,6 +180,11 @@ find_via_cuda(void)
cuda_poll();
return 1;
fail:
of_node_put(vias);
vias = NULL;
return 0;
}
#endif /* CONFIG_PPC */

87
drivers/macintosh/via-pmu.c
View File

@ -147,6 +147,7 @@ static struct device_node *vias;
static int pmu_kind = PMU_UNKNOWN;
static int pmu_fully_inited = 0;
static int pmu_has_adb;
static struct device_node *gpio_node;
static unsigned char __iomem *gpio_reg = NULL;
static int gpio_irq = -1;
static int gpio_irq_enabled = -1;
@ -295,22 +296,26 @@ static struct backlight_controller pmu_backlight_controller = {
};
#endif /* CONFIG_PMAC_BACKLIGHT */
int
find_via_pmu(void)
int __init find_via_pmu(void)
{
phys_addr_t taddr;
u32 *reg;
if (via != 0)
return 1;
vias = find_devices("via-pmu");
if (vias == 0)
vias = of_find_node_by_name(NULL, "via-pmu");
if (vias == NULL)
return 0;
if (vias->next != 0)
printk(KERN_WARNING "Warning: only using 1st via-pmu\n");
if (vias->n_addrs < 1 || vias->n_intrs < 1) {
printk(KERN_ERR "via-pmu: %d addresses, %d interrupts!\n",
vias->n_addrs, vias->n_intrs);
if (vias->n_addrs < 1 || vias->n_intrs < 1)
return 0;
reg = (u32 *)get_property(vias, "reg", NULL);
if (reg == NULL) {
printk(KERN_ERR "via-pmu: No \"reg\" property !\n");
goto fail;
}
taddr = of_translate_address(vias, reg);
if (taddr == 0) {
printk(KERN_ERR "via-pmu: Can't translate address !\n");
goto fail;
}
spin_lock_init(&pmu_lock);
@ -331,7 +336,8 @@ find_via_pmu(void)
pmu_kind = PMU_HEATHROW_BASED;
else if (device_is_compatible(vias->parent, "Keylargo")
|| device_is_compatible(vias->parent, "K2-Keylargo")) {
struct device_node *gpio, *gpiop;
struct device_node *gpiop;
phys_addr_t gaddr = 0;
pmu_kind = PMU_KEYLARGO_BASED;
pmu_has_adb = (find_type_devices("adb") != NULL);
@ -341,19 +347,24 @@ find_via_pmu(void)
PMU_INT_TICK |
PMU_INT_ENVIRONMENT;
gpiop = find_devices("gpio");
if (gpiop && gpiop->n_addrs) {
gpio_reg = ioremap(gpiop->addrs->address, 0x10);
gpio = find_devices("extint-gpio1");
if (gpio == NULL)
gpio = find_devices("pmu-interrupt");
if (gpio && gpio->parent == gpiop && gpio->n_intrs)
gpio_irq = gpio->intrs[0].line;
gpiop = of_find_node_by_name(NULL, "gpio");
if (gpiop) {
reg = (u32 *)get_property(gpiop, "reg", NULL);
if (reg)
gaddr = of_translate_address(gpiop, reg);
if (gaddr != 0)
gpio_reg = ioremap(gaddr, 0x10);
}
if (gpio_reg == NULL)
printk(KERN_ERR "via-pmu: Can't find GPIO reg !\n");
} else
pmu_kind = PMU_UNKNOWN;
via = ioremap(vias->addrs->address, 0x2000);
via = ioremap(taddr, 0x2000);
if (via == NULL) {
printk(KERN_ERR "via-pmu: Can't map address !\n");
goto fail;
}
out_8(&via[IER], IER_CLR | 0x7f); /* disable all intrs */
out_8(&via[IFR], 0x7f); /* clear IFR */
@ -371,17 +382,19 @@ find_via_pmu(void)
sys_ctrler = SYS_CTRLER_PMU;
return 1;
fail:
of_node_put(vias);
vias = NULL;
return 0;
}
#ifdef CONFIG_ADB
static int
pmu_probe(void)
static int pmu_probe(void)
{
return vias == NULL? -ENODEV: 0;
}
static int __init
pmu_init(void)
static int __init pmu_init(void)
{
if (vias == NULL)
return -ENODEV;
@ -405,7 +418,7 @@ static int __init via_pmu_start(void)
bright_req_2.complete = 1;
batt_req.complete = 1;
#if defined(CONFIG_PPC32) && !defined(CONFIG_PPC_MERGE)
#ifndef CONFIG_PPC_MERGE
if (pmu_kind == PMU_KEYLARGO_BASED)
openpic_set_irq_priority(vias->intrs[0].line,
OPENPIC_PRIORITY_DEFAULT + 1);
@ -418,10 +431,22 @@ static int __init via_pmu_start(void)
return -EAGAIN;
}
if (pmu_kind == PMU_KEYLARGO_BASED && gpio_irq != -1) {
if (request_irq(gpio_irq, gpio1_interrupt, 0, "GPIO1 ADB", (void *)0))
printk(KERN_ERR "pmu: can't get irq %d (GPIO1)\n", gpio_irq);
gpio_irq_enabled = 1;
if (pmu_kind == PMU_KEYLARGO_BASED) {
gpio_node = of_find_node_by_name(NULL, "extint-gpio1");
if (gpio_node == NULL)
gpio_node = of_find_node_by_name(NULL,
"pmu-interrupt");
if (gpio_node && gpio_node->n_intrs > 0)
gpio_irq = gpio_node->intrs[0].line;
if (gpio_irq != -1) {
if (request_irq(gpio_irq, gpio1_interrupt, 0,
"GPIO1 ADB", (void *)0))
printk(KERN_ERR "pmu: can't get irq %d"
" (GPIO1)\n", gpio_irq);
else
gpio_irq_enabled = 1;
}
}
/* Enable interrupts */
@ -1371,7 +1396,6 @@ pmu_handle_data(unsigned char *data, int len, struct pt_regs *regs)
}
pmu_done(req);
} else {
#if defined(CONFIG_XMON) && !defined(CONFIG_PPC64)
if (len == 4 && data[1] == 0x2c) {
extern int xmon_wants_key, xmon_adb_keycode;
if (xmon_wants_key) {
@ -1379,7 +1403,6 @@ pmu_handle_data(unsigned char *data, int len, struct pt_regs *regs)
return;
}
}
#endif /* defined(CONFIG_XMON) && !defined(CONFIG_PPC64) */
#ifdef CONFIG_ADB
/*
* XXX On the [23]400 the PMU gives us an up

19
include/asm-powerpc/btext.h
View File

@ -7,21 +7,22 @@
#define __PPC_BTEXT_H
#ifdef __KERNEL__
extern void btext_clearscreen(void);
extern void btext_flushscreen(void);
extern int boot_text_mapped;
extern int btext_initialize(struct device_node *np);
extern void map_boot_text(void);
extern void init_boot_display(void);
extern int btext_find_display(int allow_nonstdout);
extern void btext_update_display(unsigned long phys, int width, int height,
int depth, int pitch);
extern void btext_setup_display(int width, int height, int depth, int pitch,
unsigned long address);
extern void btext_prepare_BAT(void);
extern void btext_unmap(void);
extern void btext_drawchar(char c);
extern void btext_drawstring(const char *str);
extern void btext_drawhex(unsigned long v);
extern void btext_drawtext(const char *c, unsigned int len);
extern void btext_clearscreen(void);
extern void btext_flushscreen(void);
extern void btext_flushline(void);
#endif /* __KERNEL__ */
#endif /* __PPC_BTEXT_H */

9
include/asm-powerpc/udbg.h
View File

@ -13,8 +13,8 @@
#include <linux/compiler.h>
#include <linux/init.h>
extern void (*udbg_putc)(unsigned char c);
extern unsigned char (*udbg_getc)(void);
extern void (*udbg_putc)(char c);
extern char (*udbg_getc)(void);
extern int (*udbg_getc_poll)(void);
extern void udbg_puts(const char *s);
@ -30,5 +30,8 @@ extern unsigned int udbg_probe_uart_speed(void __iomem *comport,
unsigned int clock);
struct device_node;
extern void udbg_init_scc(struct device_node *np);
extern void udbg_scc_init(int force_scc);
extern int udbg_adb_init(int force_btext);
extern void udbg_adb_init_early(void);
#endif /* _ASM_POWERPC_UDBG_H */

2
include/asm-ppc/btext.h
View File

@ -17,7 +17,7 @@ extern unsigned long disp_BAT[2];
extern boot_infos_t disp_bi;
extern int boot_text_mapped;
extern void init_boot_display(void);
extern void btext_init(boot_infos_t *bi);
extern void btext_welcome(void);
extern void btext_prepare_BAT(void);
extern void btext_setup_display(int width, int height, int depth, int pitch,

4
include/asm-ppc/machdep.h
View File

@ -35,8 +35,10 @@ struct machdep_calls {
int (*get_irq)(struct pt_regs *);
/* A general init function, called by ppc_init in init/main.c.
May be NULL. */
May be NULL. DEPRECATED ! */
void (*init)(void);
/* For compatibility with merged platforms */
void (*init_early)(void);
void (*restart)(char *cmd);
void (*power_off)(void);