forked from luck/tmp_suning_uos_patched
47 lines
1018 B
C
47 lines
1018 B
C
|
/*
|
||
|
|
* Common CPM code
|
||
|
|
*
|
||
|
|
* Author: Scott Wood <scottwood@freescale.com>
|
||
|
|
*
|
||
|
|
* Copyright 2007 Freescale Semiconductor, Inc.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of version 2 of the GNU General Public License as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <asm/udbg.h>
|
||
|
|
#include <asm/io.h>
|
||
|
|
#include <asm/system.h>
|
||
|
|
#include <mm/mmu_decl.h>
|
||
|
|
|
||
|
|
#ifdef CONFIG_PPC_EARLY_DEBUG_CPM
|
||
|
|
static u32 __iomem *cpm_udbg_txdesc =
|
||
|
|
(u32 __iomem __force *)CONFIG_PPC_EARLY_DEBUG_CPM_ADDR;
|
||
|
|
|
||
|
|
static void udbg_putc_cpm(char c)
|
||
|
|
{
|
||
|
|
u8 __iomem *txbuf = (u8 __iomem __force *)in_be32(&cpm_udbg_txdesc[1]);
|
||
|
|
|
||
|
|
if (c == '\n')
|
||
|
|
udbg_putc('\r');
|
||
|
|
|
||
|
|
while (in_be32(&cpm_udbg_txdesc[0]) & 0x80000000)
|
||
|
|
;
|
||
|
|
|
||
|
|
out_8(txbuf, c);
|
||
|
|
out_be32(&cpm_udbg_txdesc[0], 0xa0000001);
|
||
|
|
}
|
||
|
|
|
||
|
|
void __init udbg_init_cpm(void)
|
||
|
|
{
|
||
|
|
if (cpm_udbg_txdesc) {
|
||
|
|
#ifdef CONFIG_CPM2
|
||
|
|
setbat(1, 0xf0000000, 0xf0000000, 1024*1024, _PAGE_IO);
|
||
|
|
#endif
|
||
|
|
udbg_putc = udbg_putc_cpm;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|