mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 21:54:06 +08:00
9b73100911
Activate USE_OF for SEAD-3 platform. Add basic DTS file and convert memory detection and reservations to use OF. [ralf@linux-mips.org: Remove unnecessary #ifdef wrapper in generic.h. Make <asm/mips-boards/generic.h> inclusion work even without prior <linux/of_fdt.h> inclusion.] Signed-off-by: Steven J. Hill <sjhill@mips.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4809/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved.
|
|
*/
|
|
#include <linux/init.h>
|
|
#include <linux/io.h>
|
|
|
|
#include <asm/bootinfo.h>
|
|
#include <asm/cacheflush.h>
|
|
#include <asm/traps.h>
|
|
#include <asm/mips-boards/generic.h>
|
|
#include <asm/mips-boards/prom.h>
|
|
|
|
extern void prom_init_early_console(char port);
|
|
|
|
extern char except_vec_nmi;
|
|
extern char except_vec_ejtag_debug;
|
|
|
|
int prom_argc;
|
|
int *_prom_argv, *_prom_envp;
|
|
|
|
#define prom_envp(index) ((char *)(long)_prom_envp[(index)])
|
|
|
|
char *prom_getenv(char *envname)
|
|
{
|
|
/*
|
|
* Return a pointer to the given environment variable.
|
|
* In 64-bit mode: we're using 64-bit pointers, but all pointers
|
|
* in the PROM structures are only 32-bit, so we need some
|
|
* workarounds, if we are running in 64-bit mode.
|
|
*/
|
|
int i, index = 0;
|
|
|
|
i = strlen(envname);
|
|
|
|
while (prom_envp(index)) {
|
|
if (strncmp(envname, prom_envp(index), i) == 0)
|
|
return prom_envp(index+1);
|
|
index += 2;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void __init mips_nmi_setup(void)
|
|
{
|
|
void *base;
|
|
|
|
base = cpu_has_veic ?
|
|
(void *)(CAC_BASE + 0xa80) :
|
|
(void *)(CAC_BASE + 0x380);
|
|
memcpy(base, &except_vec_nmi, 0x80);
|
|
flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
|
|
}
|
|
|
|
static void __init mips_ejtag_setup(void)
|
|
{
|
|
void *base;
|
|
|
|
base = cpu_has_veic ?
|
|
(void *)(CAC_BASE + 0xa00) :
|
|
(void *)(CAC_BASE + 0x300);
|
|
memcpy(base, &except_vec_ejtag_debug, 0x80);
|
|
flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
|
|
}
|
|
|
|
void __init prom_init(void)
|
|
{
|
|
prom_argc = fw_arg0;
|
|
_prom_argv = (int *) fw_arg1;
|
|
_prom_envp = (int *) fw_arg2;
|
|
|
|
board_nmi_handler_setup = mips_nmi_setup;
|
|
board_ejtag_handler_setup = mips_ejtag_setup;
|
|
|
|
prom_init_cmdline();
|
|
#ifdef CONFIG_EARLY_PRINTK
|
|
if ((strstr(prom_getcmdline(), "console=ttyS0")) != NULL)
|
|
prom_init_early_console(0);
|
|
else if ((strstr(prom_getcmdline(), "console=ttyS1")) != NULL)
|
|
prom_init_early_console(1);
|
|
#endif
|
|
#ifdef CONFIG_SERIAL_8250_CONSOLE
|
|
if ((strstr(prom_getcmdline(), "console=")) == NULL)
|
|
strcat(prom_getcmdline(), " console=ttyS0,38400n8r");
|
|
#endif
|
|
}
|
|
|
|
void prom_free_prom_memory(void)
|
|
{
|
|
}
|