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first maybe-working blackfin linux boot function

This commit is contained in:
Sascha Hauer 2007-09-13 15:35:49 +02:00
parent 7bb828e9db
commit 8c42a8f67c
1 changed files with 19 additions and 43 deletions
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62
arch/blackfin/lib/blackfin_linux.c
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@ -1,5 +1,5 @@
/*
* U-boot - bf533_linux.c
* U-boot - blackfin_linux.c
*
* Copyright (c) 2005 blackfin.uclinux.org
*
@ -30,61 +30,37 @@
#include <common.h>
#include <command.h>
#include <image.h>
#include <zlib.h>
#include <environment.h>
#include <asm/byteorder.h>
#define LINUX_MAX_ENVS 256
#define LINUX_MAX_ARGS 256
#ifdef CONFIG_SHOW_BOOT_PROGRESS
#include <status_led.h>
#define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
#else
#define SHOW_BOOT_PROGRESS(arg)
#endif
#include <asm/cpu.h>
#define CMD_LINE_ADDR 0xFF900000 /* L1 scratchpad */
#ifdef SHARED_RESOURCES
extern void swap_to(int device_id);
#endif
static char *make_command_line(void);
extern image_header_t header;
void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[],
ulong addr, ulong * len_ptr, int verify)
int do_bootm_linux(struct image_handle *os_handle, struct image_handle *initrd)
{
int (*appl)(char *cmdline);
char *cmdline;
const char *cmdline = getenv("bootargs");
char *cmdlinedest = (char *) CMD_LINE_ADDR;
image_header_t *os_header = &os_handle->header;
#ifdef SHARED_RESOURCES
swap_to(FLASH);
#endif
appl = (int (*)(char *))ntohl(header.ih_ep);
appl = (int (*)(char *))ntohl(os_header->ih_ep);
printf("Starting Kernel at = %x\n", appl);
cmdline = make_command_line();
strncpy(cmdlinedest, cmdline, 0x1000);
cmdlinedest[0xfff] = 0;
if(icache_status()){
flush_instruction_cache();
icache_disable();
}
}
if(dcache_status()){
flush_data_cache();
dcache_disable();
}
(*appl)(cmdline);
}
(*appl)(cmdlinedest);
return -1;
}
char *make_command_line(void)
{
char *dest = (char *) CMD_LINE_ADDR;
char *bootargs;
if ( (bootargs = getenv("bootargs")) == NULL )
return NULL;
strncpy(dest, bootargs, 0x1000);
dest[0xfff] = 0;
return dest;
}