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- pimped bootloader without flash to read flash images

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git-svn-id: http://moon:8086/svn/mips@52 a8ebac50-d88d-4704-bea3-6648445a41b3
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jens
2015-06-14 07:49:26 +00:00
parent a1f6b2b5fe
commit 1ad2aff23c
1 changed files with 49 additions and 0 deletions
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src/bootloader/bootloader.c
+49
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@@ -1,5 +1,20 @@
#include "libsys_boot.h"
#define MAGIC_EB 0x4A464931 // "JFI1" in big-endian;
#define MAGIC_EL 0x3149464A // "JFI1" in little-endian;
typedef struct _sflash_img_hdr_t
{
uint32_t magic;
uint32_t target_base;
uint32_t img_base;
uint32_t img_size;
uint32_t hdr_next;
uint8_t img_name[128];
uint8_t res[108];
} flash_img_hdr_t;
typedef struct _ssrec_t
{
uint32_t addr;
@@ -198,6 +213,40 @@ int main(int argc, char *argv[])
volatile uint8_t *pMem;
haddr = 0;
flash_img_hdr_t *pImg_hdr;
volatile uint32_t *pFlashIO = (uint32_t*)(FLASH_BASE_IO + 0x00100000); // Flash in uncached area
volatile uint32_t *pFlashMem = (uint32_t*)(FLASH_BASE_MEM + 0x00100000); // Flash in cached area
volatile uint32_t *pSdram32 = (uint32_t*)SDRAM_BASE;
sputs("\nMIPS bootloader\n");
// ----------------------------------------------------------
sputs("Loading image from flash at ");print_word((int)pFlashMem);sputs("\n");
pImg_hdr = (flash_img_hdr_t*)pFlashIO;
if ((pImg_hdr->magic != MAGIC_EL) && (pImg_hdr->magic != MAGIC_EB))
{
sputs("\n\n");
sputs("Invalid image found at ");print_word((int)pFlashMem); sputs(". Abort.\n");
return 1;
}
sputs("target_base = ");print_word(pImg_hdr->target_base);sputs("\n");
sputs("img_base = ");print_word(pImg_hdr->img_base);sputs("\n");
sputs("img_size = ");print_word(pImg_hdr->img_size);sputs("\n");
pSdram32 = (uint32_t*)pImg_hdr->target_base;
// It's safe to use cached Flash,
// because D-Cache was invalidated during execution of start code
pFlashMem += pImg_hdr->img_base/4;
for (i=0; i < pImg_hdr->img_size/4; i++)
pSdram32[i] = pFlashMem[i];
sputs("Booting from ");print_word(pImg_hdr->target_base);sputs("\n\n");
Exec_at((void*)pSdram32);
// ----------------------------------------------------------
sputs("\n\n");
PrintCPUinfo();