mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-06 11:16:15 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
122 lines
2.7 KiB
C
122 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2003
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <image.h>
|
|
#include <u-boot/zlib.h>
|
|
#include <bzlib.h>
|
|
#include <watchdog.h>
|
|
#include <environment.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 (bd_t *kbd);
|
|
|
|
void arch_lmb_reserve(struct lmb *lmb)
|
|
{
|
|
ulong sp;
|
|
|
|
/*
|
|
* Booting a (Linux) kernel image
|
|
*
|
|
* Allocate space for command line and board info - the
|
|
* address should be as high as possible within the reach of
|
|
* the kernel (see CONFIG_SYS_BOOTMAPSZ settings), but in unused
|
|
* memory, which means far enough below the current stack
|
|
* pointer.
|
|
*/
|
|
sp = get_sp();
|
|
debug ("## Current stack ends at 0x%08lx ", sp);
|
|
|
|
/* adjust sp by 1K to be safe */
|
|
sp -= 1024;
|
|
lmb_reserve(lmb, sp, (CONFIG_SYS_SDRAM_BASE + gd->ram_size - sp));
|
|
}
|
|
|
|
int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t *images)
|
|
{
|
|
int ret;
|
|
bd_t *kbd;
|
|
void (*kernel) (bd_t *, 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);
|
|
|
|
ret = image_setup_linux(images);
|
|
if (ret)
|
|
goto error;
|
|
|
|
kernel = (void (*)(bd_t *, 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 (bd_t *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;
|
|
}
|
|
}
|