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Merge tag 'highbank-debugll-cleanup' of git://sources.calxeda.com/kernel/linux into next/soc

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From Rob Herring:
Use common debug_ll_init function and remove the static mapping code
from mach-highbank.

* tag 'highbank-debugll-cleanup' of git://sources.calxeda.com/kernel/linux:
  ARM: highbank: use common debug_ll_io_init
  ARM: implement debug_ll_io_init()
This commit is contained in:
Olof Johansson 2012-11-21 01:12:49 -08:00
commit a33ee3e694
7 changed files with 39 additions and 46 deletions
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7
arch/arm/include/asm/mach/map.h
View File

@ -40,6 +40,13 @@ extern void iotable_init(struct map_desc *, int);
extern void vm_reserve_area_early(unsigned long addr, unsigned long size,
void *caller);
#ifdef CONFIG_DEBUG_LL
extern void debug_ll_addr(unsigned long *paddr, unsigned long *vaddr);
extern void debug_ll_io_init(void);
#else
static inline void debug_ll_io_init(void) {}
#endif
struct mem_type;
extern const struct mem_type *get_mem_type(unsigned int type);
/*

14
arch/arm/kernel/debug.S
View File

@ -100,6 +100,13 @@ ENTRY(printch)
b 1b
ENDPROC(printch)
ENTRY(debug_ll_addr)
addruart r2, r3, ip
str r2, [r0]
str r3, [r1]
mov pc, lr
ENDPROC(debug_ll_addr)
#else
ENTRY(printascii)
@ -119,4 +126,11 @@ ENTRY(printch)
mov pc, lr
ENDPROC(printch)
ENTRY(debug_ll_addr)
mov r2, #0
str r2, [r0]
str r2, [r1]
mov pc, lr
ENDPROC(debug_ll_addr)
#endif

1
arch/arm/mach-highbank/Makefile
View File

@ -3,7 +3,6 @@ obj-y := highbank.o system.o smc.o
plus_sec := $(call as-instr,.arch_extension sec,+sec)
AFLAGS_smc.o :=-Wa,-march=armv7-a$(plus_sec)
obj-$(CONFIG_DEBUG_HIGHBANK_UART) += lluart.o
obj-$(CONFIG_SMP) += platsmp.o
obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
obj-$(CONFIG_PM_SLEEP) += pm.o

5
arch/arm/mach-highbank/core.h
View File

@ -5,11 +5,6 @@ extern void highbank_set_cpu_jump(int cpu, void *jump_addr);
extern void highbank_clocks_init(void);
extern void highbank_restart(char, const char *);
extern void __iomem *scu_base_addr;
#ifdef CONFIG_DEBUG_HIGHBANK_UART
extern void highbank_lluart_map_io(void);
#else
static inline void highbank_lluart_map_io(void) {}
#endif
#ifdef CONFIG_PM_SLEEP
extern void highbank_pm_init(void);

8
arch/arm/mach-highbank/highbank.c
View File

@ -35,6 +35,7 @@
#include <asm/hardware/gic.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
#include "core.h"
@ -53,11 +54,6 @@ static void __init highbank_scu_map_io(void)
scu_base_addr = ioremap(base, SZ_4K);
}
static void __init highbank_map_io(void)
{
highbank_lluart_map_io();
}
#define HB_JUMP_TABLE_PHYS(cpu) (0x40 + (0x10 * (cpu)))
#define HB_JUMP_TABLE_VIRT(cpu) phys_to_virt(HB_JUMP_TABLE_PHYS(cpu))
@ -211,7 +207,7 @@ static const char *highbank_match[] __initconst = {
DT_MACHINE_START(HIGHBANK, "Highbank")
.smp = smp_ops(highbank_smp_ops),
.map_io = highbank_map_io,
.map_io = debug_ll_io_init,
.init_irq = highbank_init_irq,
.timer = &highbank_timer,
.handle_irq = gic_handle_irq,

34
arch/arm/mach-highbank/lluart.c
View File

@ -1,34 +0,0 @@
/*
* Copyright 2011 Calxeda, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/init.h>
#include <asm/page.h>
#include <asm/sizes.h>
#include <asm/mach/map.h>
#define HB_DEBUG_LL_PHYS_BASE 0xfff36000
#define HB_DEBUG_LL_VIRT_BASE 0xfee36000
static struct map_desc lluart_io_desc __initdata = {
.virtual = HB_DEBUG_LL_VIRT_BASE,
.pfn = __phys_to_pfn(HB_DEBUG_LL_PHYS_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
};
void __init highbank_lluart_map_io(void)
{
iotable_init(&lluart_io_desc, 1);
}

16
arch/arm/mm/mmu.c
View File

@ -876,6 +876,22 @@ static void __init pci_reserve_io(void)
#define pci_reserve_io() do { } while (0)
#endif
#ifdef CONFIG_DEBUG_LL
void __init debug_ll_io_init(void)
{
struct map_desc map;
debug_ll_addr(&map.pfn, &map.virtual);
if (!map.pfn || !map.virtual)
return;
map.pfn = __phys_to_pfn(map.pfn);
map.virtual &= PAGE_MASK;
map.length = PAGE_SIZE;
map.type = MT_DEVICE;
create_mapping(&map);
}
#endif
static void * __initdata vmalloc_min =
(void *)(VMALLOC_END - (240 << 20) - VMALLOC_OFFSET);