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phase2: separate block init from try_this_kernel

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As an added benefit, we can drop one level of indentation.

Signed-off-by: Werner Almesberger <werner@openmoko.org>
This commit is contained in:
Werner Almesberger 2009-01-09 04:32:49 +00:00 committed by Andy Green
parent d3ee803b58
commit f5798e6359
1 changed files with 30 additions and 20 deletions
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50
qiboot/src/phase2.c
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@ -96,6 +96,34 @@ int read_file(const char * filepath, u8 * destination, int size)
return len; return len;
} }
static int do_block_init(void)
{
static void * last_block_init = NULL;
static int last_block_init_result = 0;
/* if this device needs initializing, try to init it */
if (!this_kernel->block_init)
return 1;
/*
* cache result to limit attempts for same
* block device to one time
*/
if (this_kernel->block_init != last_block_init)
last_block_init_result = (this_kernel->block_init)();
if (last_block_init_result) {
puts("block device init failed\n");
if (this_kernel->block_init != last_block_init)
indicate(UI_IND_MOUNT_FAIL);
last_block_init = this_kernel[1].block_init;
return 0;
}
last_block_init = this_kernel->block_init;
return 1;
}
static int do_partitions(void *kernel_dram) static int do_partitions(void *kernel_dram)
{ {
unsigned char *p = kernel_dram; unsigned char *p = kernel_dram;
@ -251,8 +279,6 @@ static void try_this_kernel(void)
void (*the_kernel)(int zero, int arch, uint params); void (*the_kernel)(int zero, int arch, uint params);
unsigned int initramfs_len = 0; unsigned int initramfs_len = 0;
static char commandline_rootfs_append[512] = ""; static char commandline_rootfs_append[512] = "";
static void * last_block_init = NULL;
static int last_block_init_result = 0;
int ret; int ret;
void * kernel_dram = (void *)this_board->linux_mem_start + 0x8000; void * kernel_dram = (void *)this_board->linux_mem_start + 0x8000;
image_header_t *hdr; image_header_t *hdr;
@ -267,24 +293,8 @@ static void try_this_kernel(void)
indicate(UI_IND_MOUNT_PART); indicate(UI_IND_MOUNT_PART);
/* if this device needs initializing, try to init it */ if (!do_block_init())
if (this_kernel->block_init) { return;
/*
* cache result to limit attempts for same
* block device to one time
*/
if (this_kernel->block_init != last_block_init)
last_block_init_result = (this_kernel->block_init)();
if (last_block_init_result) {
puts("block device init failed\n");
if (this_kernel->block_init != last_block_init)
indicate(UI_IND_MOUNT_FAIL);
last_block_init = this_kernel[1].block_init;
return;
}
last_block_init = this_kernel->block_init;
}
if (!do_partitions(kernel_dram)) if (!do_partitions(kernel_dram))
return; return;