mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 05:42:58 +00:00
d9d7c20b73
This is not needed and we should avoid typedefs. Use the struct instead. Signed-off-by: Simon Glass <sjg@chromium.org>
112 lines
2.4 KiB
C
112 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2003
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <bootstage.h>
|
|
#include <command.h>
|
|
#include <env.h>
|
|
#include <image.h>
|
|
#include <lmb.h>
|
|
#include <log.h>
|
|
#include <asm/global_data.h>
|
|
#include <u-boot/zlib.h>
|
|
#include <bzlib.h>
|
|
#include <watchdog.h>
|
|
#include <asm/byteorder.h>
|
|
#ifdef CONFIG_SHOW_BOOT_PROGRESS
|
|
# include <status_led.h>
|
|
#endif
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
#define PHYSADDR(x) x
|
|
|
|
#define LINUX_MAX_ENVS 256
|
|
#define LINUX_MAX_ARGS 256
|
|
|
|
static ulong get_sp (void);
|
|
static void set_clocks_in_mhz (struct bd_info *kbd);
|
|
|
|
void arch_lmb_reserve(struct lmb *lmb)
|
|
{
|
|
arch_lmb_reserve_generic(lmb, get_sp(), gd->ram_top, 1024);
|
|
}
|
|
|
|
int do_bootm_linux(int flag, int argc, char *const argv[],
|
|
struct bootm_headers *images)
|
|
{
|
|
int ret;
|
|
struct bd_info *kbd;
|
|
void (*kernel) (struct bd_info *, ulong, ulong, ulong, ulong);
|
|
struct lmb *lmb = &images->lmb;
|
|
|
|
/*
|
|
* allow the PREP bootm subcommand, it is required for bootm to work
|
|
*/
|
|
if (flag & BOOTM_STATE_OS_PREP)
|
|
return 0;
|
|
|
|
if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
|
|
return 1;
|
|
|
|
/* allocate space for kernel copy of board info */
|
|
ret = boot_get_kbd (lmb, &kbd);
|
|
if (ret) {
|
|
puts("ERROR with allocation of kernel bd\n");
|
|
goto error;
|
|
}
|
|
set_clocks_in_mhz(kbd);
|
|
|
|
if (CONFIG_IS_ENABLED(LMB)) {
|
|
ret = image_setup_linux(images);
|
|
if (ret)
|
|
goto error;
|
|
}
|
|
|
|
kernel = (void (*)(struct bd_info *, ulong, ulong, ulong, ulong))images->ep;
|
|
|
|
debug("## Transferring control to Linux (at address %08lx) ...\n",
|
|
(ulong) kernel);
|
|
|
|
bootstage_mark(BOOTSTAGE_ID_RUN_OS);
|
|
|
|
/*
|
|
* Linux Kernel Parameters (passing board info data):
|
|
* sp+00: Ignore, side effect of using jsr to jump to kernel
|
|
* sp+04: ptr to board info data
|
|
* sp+08: initrd_start or 0 if no initrd
|
|
* sp+12: initrd_end - unused if initrd_start is 0
|
|
* sp+16: Start of command line string
|
|
* sp+20: End of command line string
|
|
*/
|
|
(*kernel)(kbd, images->initrd_start, images->initrd_end,
|
|
images->cmdline_start, images->cmdline_end);
|
|
/* does not return */
|
|
error:
|
|
return 1;
|
|
}
|
|
|
|
static ulong get_sp (void)
|
|
{
|
|
ulong sp;
|
|
|
|
asm("movel %%a7, %%d0\n"
|
|
"movel %%d0, %0\n": "=d"(sp): :"%d0");
|
|
|
|
return sp;
|
|
}
|
|
|
|
static void set_clocks_in_mhz (struct bd_info *kbd)
|
|
{
|
|
char *s;
|
|
|
|
s = env_get("clocks_in_mhz");
|
|
if (s) {
|
|
/* convert all clock information to MHz */
|
|
kbd->bi_intfreq /= 1000000L;
|
|
kbd->bi_busfreq /= 1000000L;
|
|
}
|
|
}
|