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qi-fix-large-sdhc-timeout.patch

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This patch increases the timeout for card initializaton so it works with
8GB Sandisk uSDHC, and adds the size computation for SDHC as well.

Signed-off-by: Andy Green <andy@openmoko.com>
This commit is contained in:
Andy Green 2008-11-28 10:16:37 +00:00 committed by Andy Green
parent 9f3614edd0
commit 4bdb43cc93
1 changed files with 29 additions and 4 deletions
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33
qiboot/src/drivers/glamo-mmc.c
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@ -49,6 +49,22 @@ static enum card_type card_type = CARDTYPE_NONE;
int mmc_read(unsigned long src, u8 *dst, int size);
#define UNSTUFF_BITS(resp,start,size) \
({ \
const int __size = size; \
const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \
const int __off = 3 - ((start) / 32); \
const int __shft = (start) & 31; \
u32 __res; \
\
__res = resp[__off] >> __shft; \
if (__size + __shft > 32) \
__res |= resp[__off-1] << ((32 - __shft) & 31); \
__res & __mask; \
})
int q;
void udelay(int n)
@ -578,7 +594,7 @@ static void print_sd_cid(const struct sd_cid *cid)
int mmc_init(int verbose)
{
int retries = 16, rc = -1;
int retries = 50, rc = -1;
int resp;
u8 response[16];
// mmc_cid_t *mmc_cid = (mmc_cid_t *)response;
@ -774,9 +790,18 @@ int mmc_init(int verbose)
// mmc_dev.blksz = 512;
// mmc_dev.lba = (((unsigned long)1 << csd->c_size_mult1) *
// (unsigned long)csd->c_size) >> 9;
puts(" MMC/SD size: ");
printdec((((unsigned long)1 << csd->c_size_mult1) *
(unsigned long)csd->c_size) >> 10);
switch (card_type) {
case CARDTYPE_SDHC:
puts(" SDHC size: ");
printdec((UNSTUFF_BITS(((u32 *)&response[0]), 48, 22)
+ 1) / 2);
break;
default:
puts(" MMC/SD size: ");
printdec((((unsigned long)1 << csd->c_size_mult1) *
(unsigned long)(csd->c_size)) >> 10);
}
puts(" MiB\n");
}