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MMC for PXA 27X (resubmit)

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MMC support for X_Scale PXA is broken and does not work.
Mainly, the mmc_init() function cannot recognize current SD/MMC cards.
There were already some patches around the world but none of them was
merged into the official u-boot tree.

This patch makes order fixing this issue. Resubmit after code cleanup.

Applied and tested on PXA 270 (TrizepsIV module).

Signed-off-by: Stefano Babic <sbabic@denx.de>
This commit is contained in:
stefano babic 2007-11-20 10:40:24 +01:00 committed by Wolfgang Denk
parent 96bbfa1e66
commit c95219fae2
3 changed files with 382 additions and 201 deletions
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435
cpu/pxa/mmc.c
View file

@ -30,14 +30,13 @@
#ifdef CONFIG_MMC #ifdef CONFIG_MMC
extern int extern int fat_register_device(block_dev_desc_t * dev_desc, int part_no);
fat_register_device(block_dev_desc_t *dev_desc, int part_no);
static block_dev_desc_t mmc_dev; static block_dev_desc_t mmc_dev;
block_dev_desc_t *mmc_get_dev(int dev) block_dev_desc_t *mmc_get_dev(int dev)
{ {
return (dev == 0) ? &mmc_dev : NULL; return ((block_dev_desc_t *) & mmc_dev);
} }
/* /*
@ -45,63 +44,51 @@ block_dev_desc_t * mmc_get_dev(int dev)
* and other parameters * and other parameters
*/ */
static uchar mmc_buf[MMC_BLOCK_SIZE]; static uchar mmc_buf[MMC_BLOCK_SIZE];
static mmc_csd_t mmc_csd; static uchar spec_ver;
static int mmc_ready = 0; static int mmc_ready = 0;
static int wide = 0;
static uint32_t *
static uchar *
/****************************************************/ /****************************************************/
mmc_cmd(ushort cmd, ushort argh, ushort argl, ushort cmdat) mmc_cmd(ushort cmd, ushort argh, ushort argl, ushort cmdat)
/****************************************************/ /****************************************************/
{ {
static uchar resp[20]; static uint32_t resp[4], a, b, c;
ulong status; ulong status;
int words, i; int i;
debug("mmc_cmd %x %x %x %x\n", cmd, argh, argl, cmdat); debug("mmc_cmd %u 0x%04x 0x%04x 0x%04x\n", cmd, argh, argl,
cmdat | wide);
MMC_STRPCL = MMC_STRPCL_STOP_CLK; MMC_STRPCL = MMC_STRPCL_STOP_CLK;
MMC_I_MASK = ~MMC_I_MASK_CLK_IS_OFF; MMC_I_MASK = ~MMC_I_MASK_CLK_IS_OFF;
while (!(MMC_I_REG & MMC_I_REG_CLK_IS_OFF)) ; while (!(MMC_I_REG & MMC_I_REG_CLK_IS_OFF)) ;
MMC_CMD = cmd; MMC_CMD = cmd;
MMC_ARGH = argh; MMC_ARGH = argh;
MMC_ARGL = argl; MMC_ARGL = argl;
MMC_CMDAT = cmdat; MMC_CMDAT = cmdat | wide;
MMC_I_MASK = ~MMC_I_MASK_END_CMD_RES; MMC_I_MASK = ~MMC_I_MASK_END_CMD_RES;
MMC_STRPCL = MMC_STRPCL_START_CLK; MMC_STRPCL = MMC_STRPCL_START_CLK;
while (!(MMC_I_REG & MMC_I_REG_END_CMD_RES)) ; while (!(MMC_I_REG & MMC_I_REG_END_CMD_RES)) ;
status = MMC_STAT; status = MMC_STAT;
debug("MMC status %x\n", status); debug("MMC status 0x%08x\n", status);
if (status & MMC_STAT_TIME_OUT_RESPONSE) { if (status & MMC_STAT_TIME_OUT_RESPONSE) {
return 0; return 0;
} }
switch (cmdat & 0x3) { /* Linux says:
case MMC_CMDAT_R1: * Did I mention this is Sick. We always need to
case MMC_CMDAT_R3: * discard the upper 8 bits of the first 16-bit word.
words = 3; */
break; a = (MMC_RES & 0xffff);
for (i = 0; i < 4; i++) {
case MMC_CMDAT_R2: b = (MMC_RES & 0xffff);
words = 8; c = (MMC_RES & 0xffff);
break; resp[i] = (a << 24) | (b << 8) | (c >> 8);
a = c;
default: debug("MMC resp[%d] = %#08x\n", i, resp[i]);
return 0;
} }
for (i = words-1; i >= 0; i--) {
ulong res_fifo = MMC_RES;
int offset = i << 1;
resp[offset] = ((uchar *)&res_fifo)[0];
resp[offset+1] = ((uchar *)&res_fifo)[1];
}
#ifdef MMC_DEBUG
for (i=0; i<words*2; i += 2) {
printf("MMC resp[%d] = %02x\n", i, resp[i]);
printf("MMC resp[%d] = %02x\n", i+1, resp[i+1]);
}
#endif
return resp; return resp;
} }
@ -110,7 +97,6 @@ int
mmc_block_read(uchar * dst, ulong src, ulong len) mmc_block_read(uchar * dst, ulong src, ulong len)
/****************************************************/ /****************************************************/
{ {
uchar *resp;
ushort argh, argl; ushort argh, argl;
ulong status; ulong status;
@ -124,7 +110,7 @@ mmc_block_read(uchar *dst, ulong src, ulong len)
argl = len & 0xffff; argl = len & 0xffff;
/* set block len */ /* set block len */
resp = mmc_cmd(MMC_CMD_SET_BLOCKLEN, argh, argl, MMC_CMDAT_R1); mmc_cmd(MMC_CMD_SET_BLOCKLEN, argh, argl, MMC_CMDAT_R1);
/* send read command */ /* send read command */
argh = src >> 16; argh = src >> 16;
@ -133,9 +119,9 @@ mmc_block_read(uchar *dst, ulong src, ulong len)
MMC_RDTO = 0xffff; MMC_RDTO = 0xffff;
MMC_NOB = 1; MMC_NOB = 1;
MMC_BLKLEN = len; MMC_BLKLEN = len;
resp = mmc_cmd(MMC_CMD_READ_BLOCK, argh, argl, mmc_cmd(MMC_CMD_READ_BLOCK, argh, argl,
MMC_CMDAT_R1|MMC_CMDAT_READ|MMC_CMDAT_BLOCK|MMC_CMDAT_DATA_EN); MMC_CMDAT_R1 | MMC_CMDAT_READ | MMC_CMDAT_BLOCK |
MMC_CMDAT_DATA_EN);
MMC_I_MASK = ~MMC_I_MASK_RXFIFO_RD_REQ; MMC_I_MASK = ~MMC_I_MASK_RXFIFO_RD_REQ;
while (len) { while (len) {
@ -172,7 +158,6 @@ int
mmc_block_write(ulong dst, uchar * src, int len) mmc_block_write(ulong dst, uchar * src, int len)
/****************************************************/ /****************************************************/
{ {
uchar *resp;
ushort argh, argl; ushort argh, argl;
ulong status; ulong status;
@ -186,7 +171,7 @@ mmc_block_write(ulong dst, uchar *src, int len)
argl = len & 0xffff; argl = len & 0xffff;
/* set block len */ /* set block len */
resp = mmc_cmd(MMC_CMD_SET_BLOCKLEN, argh, argl, MMC_CMDAT_R1); mmc_cmd(MMC_CMD_SET_BLOCKLEN, argh, argl, MMC_CMDAT_R1);
/* send write command */ /* send write command */
argh = dst >> 16; argh = dst >> 16;
@ -194,8 +179,9 @@ mmc_block_write(ulong dst, uchar *src, int len)
MMC_STRPCL = MMC_STRPCL_STOP_CLK; MMC_STRPCL = MMC_STRPCL_STOP_CLK;
MMC_NOB = 1; MMC_NOB = 1;
MMC_BLKLEN = len; MMC_BLKLEN = len;
resp = mmc_cmd(MMC_CMD_WRITE_BLOCK, argh, argl, mmc_cmd(MMC_CMD_WRITE_BLOCK, argh, argl,
MMC_CMDAT_R1|MMC_CMDAT_WRITE|MMC_CMDAT_BLOCK|MMC_CMDAT_DATA_EN); MMC_CMDAT_R1 | MMC_CMDAT_WRITE | MMC_CMDAT_BLOCK |
MMC_CMDAT_DATA_EN);
MMC_I_MASK = ~MMC_I_MASK_TXFIFO_WR_REQ; MMC_I_MASK = ~MMC_I_MASK_TXFIFO_WR_REQ;
while (len) { while (len) {
@ -228,7 +214,6 @@ mmc_block_write(ulong dst, uchar *src, int len)
return 0; return 0;
} }
int int
/****************************************************/ /****************************************************/
mmc_read(ulong src, uchar * dst, int size) mmc_read(ulong src, uchar * dst, int size)
@ -257,33 +242,46 @@ mmc_read(ulong src, uchar *dst, int size)
aligned_end = mmc_block_address & end; aligned_end = mmc_block_address & end;
/* all block aligned accesses */ /* all block aligned accesses */
debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", debug
src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); ("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
src, (ulong) dst, end, part_start, part_end, aligned_start,
aligned_end);
if (part_start) { if (part_start) {
part_len = mmc_block_size - part_start; part_len = mmc_block_size - part_start;
debug("ps src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", debug
src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); ("ps src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
if ((mmc_block_read(mmc_buf, aligned_start, mmc_block_size)) < 0) { src, (ulong) dst, end, part_start, part_end, aligned_start,
aligned_end);
if ((mmc_block_read(mmc_buf, aligned_start, mmc_block_size)) <
0) {
return -1; return -1;
} }
memcpy(dst, mmc_buf + part_start, part_len); memcpy(dst, mmc_buf + part_start, part_len);
dst += part_len; dst += part_len;
src += part_len; src += part_len;
} }
debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", debug
src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); ("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
src, (ulong) dst, end, part_start, part_end, aligned_start,
aligned_end);
for (; src < aligned_end; src += mmc_block_size, dst += mmc_block_size) { for (; src < aligned_end; src += mmc_block_size, dst += mmc_block_size) {
debug("al src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", debug
src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); ("al src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
src, (ulong) dst, end, part_start, part_end, aligned_start,
aligned_end);
if ((mmc_block_read((uchar *) (dst), src, mmc_block_size)) < 0) { if ((mmc_block_read((uchar *) (dst), src, mmc_block_size)) < 0) {
return -1; return -1;
} }
} }
debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", debug
src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); ("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
src, (ulong) dst, end, part_start, part_end, aligned_start,
aligned_end);
if (part_end && src < end) { if (part_end && src < end) {
debug("pe src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", debug
src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); ("pe src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
src, (ulong) dst, end, part_start, part_end, aligned_start,
aligned_end);
if ((mmc_block_read(mmc_buf, aligned_end, mmc_block_size)) < 0) { if ((mmc_block_read(mmc_buf, aligned_end, mmc_block_size)) < 0) {
return -1; return -1;
} }
@ -320,36 +318,50 @@ mmc_write(uchar *src, ulong dst, int size)
aligned_end = mmc_block_address & end; aligned_end = mmc_block_address & end;
/* all block aligned accesses */ /* all block aligned accesses */
debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", debug
src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); ("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
src, (ulong) dst, end, part_start, part_end, aligned_start,
aligned_end);
if (part_start) { if (part_start) {
part_len = mmc_block_size - part_start; part_len = mmc_block_size - part_start;
debug("ps src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", debug
(ulong)src, dst, end, part_start, part_end, aligned_start, aligned_end); ("ps src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
if ((mmc_block_read(mmc_buf, aligned_start, mmc_block_size)) < 0) { (ulong) src, dst, end, part_start, part_end, aligned_start,
aligned_end);
if ((mmc_block_read(mmc_buf, aligned_start, mmc_block_size)) <
0) {
return -1; return -1;
} }
memcpy(mmc_buf + part_start, src, part_len); memcpy(mmc_buf + part_start, src, part_len);
if ((mmc_block_write(aligned_start, mmc_buf, mmc_block_size)) < 0) { if ((mmc_block_write(aligned_start, mmc_buf, mmc_block_size)) <
0) {
return -1; return -1;
} }
dst += part_len; dst += part_len;
src += part_len; src += part_len;
} }
debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", debug
src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); ("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
src, (ulong) dst, end, part_start, part_end, aligned_start,
aligned_end);
for (; dst < aligned_end; src += mmc_block_size, dst += mmc_block_size) { for (; dst < aligned_end; src += mmc_block_size, dst += mmc_block_size) {
debug("al src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", debug
src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); ("al src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
src, (ulong) dst, end, part_start, part_end, aligned_start,
aligned_end);
if ((mmc_block_write(dst, (uchar *) src, mmc_block_size)) < 0) { if ((mmc_block_write(dst, (uchar *) src, mmc_block_size)) < 0) {
return -1; return -1;
} }
} }
debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", debug
src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); ("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
src, (ulong) dst, end, part_start, part_end, aligned_start,
aligned_end);
if (part_end && dst < end) { if (part_end && dst < end) {
debug("pe src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", debug
src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); ("pe src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
src, (ulong) dst, end, part_start, part_end, aligned_start,
aligned_end);
if ((mmc_block_read(mmc_buf, aligned_end, mmc_block_size)) < 0) { if ((mmc_block_read(mmc_buf, aligned_end, mmc_block_size)) < 0) {
return -1; return -1;
} }
@ -363,7 +375,7 @@ mmc_write(uchar *src, ulong dst, int size)
ulong ulong
/****************************************************/ /****************************************************/
mmc_bread(int dev_num, ulong blknr, ulong blkcnt, void *dst) mmc_bread(int dev_num, ulong blknr, ulong blkcnt, ulong * dst)
/****************************************************/ /****************************************************/
{ {
int mmc_block_size = MMC_BLOCK_SIZE; int mmc_block_size = MMC_BLOCK_SIZE;
@ -373,15 +385,174 @@ mmc_bread(int dev_num, ulong blknr, ulong blkcnt, void *dst)
return blkcnt; return blkcnt;
} }
#ifdef __GNUC__
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
#else
#define likely(x) (x)
#define unlikely(x) (x)
#endif
#define UNSTUFF_BITS(resp,start,size) \
({ \
const int __size = size; \
const uint32_t __mask = (__size < 32 ? 1 << __size : 0) - 1; \
const int32_t __off = 3 - ((start) / 32); \
const int32_t __shft = (start) & 31; \
uint32_t __res; \
\
__res = resp[__off] >> __shft; \
if (__size + __shft > 32) \
__res |= resp[__off-1] << ((32 - __shft) % 32); \
__res & __mask; \
})
/*
* Given the decoded CSD structure, decode the raw CID to our CID structure.
*/
static void mmc_decode_cid(uint32_t * resp)
{
if (IF_TYPE_SD == mmc_dev.if_type) {
/*
* SD doesn't currently have a version field so we will
* have to assume we can parse this.
*/
sprintf((char *)mmc_dev.vendor,
"Man %02x OEM %c%c \"%c%c%c%c%c\" Date %02u/%04u",
UNSTUFF_BITS(resp, 120, 8), UNSTUFF_BITS(resp, 112, 8),
UNSTUFF_BITS(resp, 104, 8), UNSTUFF_BITS(resp, 96, 8),
UNSTUFF_BITS(resp, 88, 8), UNSTUFF_BITS(resp, 80, 8),
UNSTUFF_BITS(resp, 72, 8), UNSTUFF_BITS(resp, 64, 8),
UNSTUFF_BITS(resp, 8, 4), UNSTUFF_BITS(resp, 12,
8) + 2000);
sprintf((char *)mmc_dev.revision, "%d.%d",
UNSTUFF_BITS(resp, 60, 4), UNSTUFF_BITS(resp, 56, 4));
sprintf((char *)mmc_dev.product, "%u",
UNSTUFF_BITS(resp, 24, 32));
} else {
/*
* The selection of the format here is based upon published
* specs from sandisk and from what people have reported.
*/
switch (spec_ver) {
case 0: /* MMC v1.0 - v1.2 */
case 1: /* MMC v1.4 */
sprintf((char *)mmc_dev.vendor,
"Man %02x%02x%02x \"%c%c%c%c%c%c%c\" Date %02u/%04u",
UNSTUFF_BITS(resp, 120, 8), UNSTUFF_BITS(resp,
112,
8),
UNSTUFF_BITS(resp, 104, 8), UNSTUFF_BITS(resp,
96, 8),
UNSTUFF_BITS(resp, 88, 8), UNSTUFF_BITS(resp,
80, 8),
UNSTUFF_BITS(resp, 72, 8), UNSTUFF_BITS(resp,
64, 8),
UNSTUFF_BITS(resp, 56, 8), UNSTUFF_BITS(resp,
48, 8),
UNSTUFF_BITS(resp, 12, 4), UNSTUFF_BITS(resp, 8,
4) +
1997);
sprintf((char *)mmc_dev.revision, "%d.%d",
UNSTUFF_BITS(resp, 44, 4), UNSTUFF_BITS(resp,
40, 4));
sprintf((char *)mmc_dev.product, "%u",
UNSTUFF_BITS(resp, 16, 24));
break;
case 2: /* MMC v2.0 - v2.2 */
case 3: /* MMC v3.1 - v3.3 */
case 4: /* MMC v4 */
sprintf((char *)mmc_dev.vendor,
"Man %02x OEM %04x \"%c%c%c%c%c%c\" Date %02u/%04u",
UNSTUFF_BITS(resp, 120, 8), UNSTUFF_BITS(resp,
104,
16),
UNSTUFF_BITS(resp, 96, 8), UNSTUFF_BITS(resp,
88, 8),
UNSTUFF_BITS(resp, 80, 8), UNSTUFF_BITS(resp,
72, 8),
UNSTUFF_BITS(resp, 64, 8), UNSTUFF_BITS(resp,
56, 8),
UNSTUFF_BITS(resp, 12, 4), UNSTUFF_BITS(resp, 8,
4) +
1997);
sprintf((char *)mmc_dev.product, "%u",
UNSTUFF_BITS(resp, 16, 32));
sprintf((char *)mmc_dev.revision, "N/A");
break;
default:
printf("MMC card has unknown MMCA version %d\n",
spec_ver);
break;
}
}
printf("%s card.\nVendor: %s\nProduct: %s\nRevision: %s\n",
(IF_TYPE_SD == mmc_dev.if_type) ? "SD" : "MMC", mmc_dev.vendor,
mmc_dev.product, mmc_dev.revision);
}
/*
* Given a 128-bit response, decode to our card CSD structure.
*/
static void mmc_decode_csd(uint32_t * resp)
{
unsigned int mult, csd_struct;
if (IF_TYPE_SD == mmc_dev.if_type) {
csd_struct = UNSTUFF_BITS(resp, 126, 2);
if (csd_struct != 0) {
printf("SD: unrecognised CSD structure version %d\n",
csd_struct);
return;
}
} else {
/*
* We only understand CSD structure v1.1 and v1.2.
* v1.2 has extra information in bits 15, 11 and 10.
*/
csd_struct = UNSTUFF_BITS(resp, 126, 2);
if (csd_struct != 1 && csd_struct != 2) {
printf("MMC: unrecognised CSD structure version %d\n",
csd_struct);
return;
}
spec_ver = UNSTUFF_BITS(resp, 122, 4);
mmc_dev.if_type = IF_TYPE_MMC;
}
mult = 1 << (UNSTUFF_BITS(resp, 47, 3) + 2);
mmc_dev.lba = (1 + UNSTUFF_BITS(resp, 62, 12)) * mult;
mmc_dev.blksz = 1 << UNSTUFF_BITS(resp, 80, 4);
/* FIXME: The following just makes assumes that's the partition type -- should really read it */
mmc_dev.part_type = PART_TYPE_DOS;
mmc_dev.dev = 0;
mmc_dev.lun = 0;
mmc_dev.type = DEV_TYPE_HARDDISK;
mmc_dev.removable = 0;
mmc_dev.block_read = mmc_bread;
printf("Detected: %u blocks of %u bytes (%uMB) ", mmc_dev.lba,
mmc_dev.blksz, mmc_dev.lba * mmc_dev.blksz / (1024 * 1024));
}
int int
/****************************************************/ /****************************************************/
mmc_init(int verbose) mmc_init(int verbose)
/****************************************************/ /****************************************************/
{ {
int retries, rc = -ENODEV; int retries, rc = -ENODEV;
uchar *resp; uint32_t cid_resp[4];
uint32_t *resp;
uint16_t rca = 0;
#ifdef CONFIG_LUBBOCK /* Reset device interface type */
mmc_dev.if_type = IF_TYPE_UNKNOWN;
#if defined (CONFIG_LUBBOCK) || (defined (CONFIG_GUMSTIX) && !defined(CONFIG_PXA27X))
set_GPIO_mode(GPIO6_MMCCLK_MD); set_GPIO_mode(GPIO6_MMCCLK_MD);
set_GPIO_mode(GPIO8_MMCCS0_MD); set_GPIO_mode(GPIO8_MMCCS0_MD);
#endif #endif
@ -392,95 +563,97 @@ mmc_init(int verbose)
udelay(1000); udelay(1000);
#endif #endif
mmc_csd.c_size = 0;
MMC_CLKRT = MMC_CLKRT_0_3125MHZ; MMC_CLKRT = MMC_CLKRT_0_3125MHZ;
MMC_RESTO = MMC_RES_TO_MAX; MMC_RESTO = MMC_RES_TO_MAX;
MMC_SPI = MMC_SPI_DISABLE; MMC_SPI = MMC_SPI_DISABLE;
/* reset */ /* reset */
retries = 10; mmc_cmd(MMC_CMD_RESET, 0, 0, MMC_CMDAT_INIT | MMC_CMDAT_R0);
resp = mmc_cmd(0, 0, 0, 0); udelay(200000);
resp = mmc_cmd(1, 0x00ff, 0xc000, MMC_CMDAT_INIT|MMC_CMDAT_BUSY|MMC_CMDAT_R3); retries = 3;
while (retries-- && resp && !(resp[4] & 0x80)) { while (retries--) {
debug("resp %x %x\n", resp[0], resp[1]); resp = mmc_cmd(MMC_CMD_APP_CMD, 0, 0, MMC_CMDAT_R1);
if (!(resp[0] & 0x00000020)) { /* Card does not support APP_CMD */
debug("Card does not support APP_CMD\n");
break;
}
resp = mmc_cmd(SD_CMD_APP_OP_COND, 0x0020, 0, MMC_CMDAT_R3 | (retries < 2 ? 0 : MMC_CMDAT_INIT)); /* Select 3.2-3.3 and 3.3-3.4V */
if (resp[0] & 0x80000000) {
mmc_dev.if_type = IF_TYPE_SD;
debug("Detected SD card\n");
break;
}
#ifdef CONFIG_PXA27X #ifdef CONFIG_PXA27X
udelay(10000); udelay(10000);
#else #else
udelay(50); udelay(200000);
#endif #endif
resp = mmc_cmd(1, 0x00ff, 0xff00, MMC_CMDAT_BUSY|MMC_CMDAT_R3); }
if (retries <= 0 || !(IF_TYPE_SD == mmc_dev.if_type)) {
debug("Failed to detect SD Card, trying MMC\n");
resp =
mmc_cmd(MMC_CMD_SEND_OP_COND, 0x00ff, 0x8000, MMC_CMDAT_R3);
retries = 10;
while (retries-- && resp && !(resp[0] & 0x80000000)) {
#ifdef CONFIG_PXA27X
udelay(10000);
#else
udelay(200000);
#endif
resp =
mmc_cmd(MMC_CMD_SEND_OP_COND, 0x00ff, 0x8000,
MMC_CMDAT_R3);
}
} }
/* try to get card id */ /* try to get card id */
resp = mmc_cmd(2, 0, 0, MMC_CMDAT_R2); resp =
mmc_cmd(MMC_CMD_ALL_SEND_CID, 0, 0, MMC_CMDAT_R2 | MMC_CMDAT_BUSY);
if (resp) { if (resp) {
/* TODO configure mmc driver depending on card attributes */ memcpy(cid_resp, resp, sizeof(cid_resp));
mmc_cid_t *cid = (mmc_cid_t *)resp;
if (verbose) {
printf("MMC found. Card desciption is:\n");
printf("Manufacturer ID = %02x%02x%02x\n",
cid->id[0], cid->id[1], cid->id[2]);
printf("HW/FW Revision = %x %x\n",cid->hwrev, cid->fwrev);
cid->hwrev = cid->fwrev = 0; /* null terminate string */
printf("Product Name = %s\n",cid->name);
printf("Serial Number = %02x%02x%02x\n",
cid->sn[0], cid->sn[1], cid->sn[2]);
printf("Month = %d\n",cid->month);
printf("Year = %d\n",1997 + cid->year);
}
/* fill in device description */
mmc_dev.if_type = IF_TYPE_MMC;
mmc_dev.part_type = PART_TYPE_DOS;
mmc_dev.dev = 0;
mmc_dev.lun = 0;
mmc_dev.type = 0;
/* FIXME fill in the correct size (is set to 32MByte) */
mmc_dev.blksz = 512;
mmc_dev.lba = 0x10000;
sprintf((char*)mmc_dev.vendor,"Man %02x%02x%02x Snr %02x%02x%02x",
cid->id[0], cid->id[1], cid->id[2],
cid->sn[0], cid->sn[1], cid->sn[2]);
sprintf((char*)mmc_dev.product,"%s",cid->name);
sprintf((char*)mmc_dev.revision,"%x %x",cid->hwrev, cid->fwrev);
mmc_dev.removable = 0;
mmc_dev.block_read = mmc_bread;
/* MMC exists, get CSD too */ /* MMC exists, get CSD too */
resp = mmc_cmd(MMC_CMD_SET_RCA, MMC_DEFAULT_RCA, 0, MMC_CMDAT_R1); resp = mmc_cmd(MMC_CMD_SET_RCA, 0, 0, MMC_CMDAT_R1);
resp = mmc_cmd(MMC_CMD_SEND_CSD, MMC_DEFAULT_RCA, 0, MMC_CMDAT_R2); if (IF_TYPE_SD == mmc_dev.if_type)
rca = ((resp[0] & 0xffff0000) >> 16);
resp = mmc_cmd(MMC_CMD_SEND_CSD, rca, 0, MMC_CMDAT_R2);
if (resp) { if (resp) {
mmc_csd_t *csd = (mmc_csd_t *)resp; mmc_decode_csd(resp);
memcpy(&mmc_csd, csd, sizeof(csd));
rc = 0; rc = 0;
mmc_ready = 1; mmc_ready = 1;
/* FIXME add verbose printout for csd */
}
} }
#ifdef CONFIG_PXA27X mmc_decode_cid(cid_resp);
MMC_CLKRT = 1; /* 10 MHz - see Intel errata */ }
#else
MMC_CLKRT = 0; /* 20 MHz */ MMC_CLKRT = 0; /* 20 MHz */
resp = mmc_cmd(MMC_CMD_SELECT_CARD, rca, 0, MMC_CMDAT_R1);
#ifdef CONFIG_PXA27X
if (IF_TYPE_SD == mmc_dev.if_type) {
resp = mmc_cmd(MMC_CMD_APP_CMD, rca, 0, MMC_CMDAT_R1);
resp = mmc_cmd(SD_CMD_APP_SET_BUS_WIDTH, 0, 2, MMC_CMDAT_R1);
wide = MMC_CMDAT_SD_4DAT;
}
#endif #endif
resp = mmc_cmd(7, MMC_DEFAULT_RCA, 0, MMC_CMDAT_R1);
fat_register_device(&mmc_dev, 1); /* partitions start counting with 1 */ fat_register_device(&mmc_dev, 1); /* partitions start counting with 1 */
return rc; return rc;
} }
int int mmc_ident(block_dev_desc_t * dev)
mmc_ident(block_dev_desc_t *dev)
{ {
return 0; return 0;
} }
int int mmc2info(ulong addr)
mmc2info(ulong addr)
{ {
/* FIXME hard codes to 32 MB device */ if (addr >= CFG_MMC_BASE
if (addr >= CFG_MMC_BASE && addr < CFG_MMC_BASE + 0x02000000) { && addr < CFG_MMC_BASE + (mmc_dev.lba * mmc_dev.blksz)) {
return 1; return 1;
} }
return 0; return 0;

77
include/asm-arm/arch-pxa/mmc.h
View file

@ -54,14 +54,17 @@
#define MMC_SPI_CRC_ON (0x01UL << 1) #define MMC_SPI_CRC_ON (0x01UL << 1)
/* MMC_CMDAT */ /* MMC_CMDAT */
#define MMC_CMDAT_SD_4DAT (0x0001UL << 8)
#define MMC_CMDAT_MMC_DMA_EN (0x0001UL << 7) #define MMC_CMDAT_MMC_DMA_EN (0x0001UL << 7)
#define MMC_CMDAT_INIT (0x0001UL << 6) #define MMC_CMDAT_INIT (0x0001UL << 6)
#define MMC_CMDAT_BUSY (0x0001UL << 5) #define MMC_CMDAT_BUSY (0x0001UL << 5)
#define MMC_CMDAT_BCR (0x0003UL << 5)
#define MMC_CMDAT_STREAM (0x0001UL << 4) #define MMC_CMDAT_STREAM (0x0001UL << 4)
#define MMC_CMDAT_BLOCK (0x0000UL << 4) #define MMC_CMDAT_BLOCK (0x0000UL << 4)
#define MMC_CMDAT_WRITE (0x0001UL << 3) #define MMC_CMDAT_WRITE (0x0001UL << 3)
#define MMC_CMDAT_READ (0x0000UL << 3) #define MMC_CMDAT_READ (0x0000UL << 3)
#define MMC_CMDAT_DATA_EN (0x0001UL << 2) #define MMC_CMDAT_DATA_EN (0x0001UL << 2)
#define MMC_CMDAT_R0 (0)
#define MMC_CMDAT_R1 (0x0001UL) #define MMC_CMDAT_R1 (0x0001UL)
#define MMC_CMDAT_R2 (0x0002UL) #define MMC_CMDAT_R2 (0x0002UL)
#define MMC_CMDAT_R3 (0x0003UL) #define MMC_CMDAT_R3 (0x0003UL)
@ -111,6 +114,7 @@
#define MMC_CMD_SEND_OP_COND 1 #define MMC_CMD_SEND_OP_COND 1
#define MMC_CMD_ALL_SEND_CID 2 #define MMC_CMD_ALL_SEND_CID 2
#define MMC_CMD_SET_RCA 3 #define MMC_CMD_SET_RCA 3
#define MMC_CMD_SELECT_CARD 7
#define MMC_CMD_SEND_CSD 9 #define MMC_CMD_SEND_CSD 9
#define MMC_CMD_SEND_CID 10 #define MMC_CMD_SEND_CID 10
#define MMC_CMD_SEND_STATUS 13 #define MMC_CMD_SEND_STATUS 13
@ -118,6 +122,10 @@
#define MMC_CMD_READ_BLOCK 17 #define MMC_CMD_READ_BLOCK 17
#define MMC_CMD_RD_BLK_MULTI 18 #define MMC_CMD_RD_BLK_MULTI 18
#define MMC_CMD_WRITE_BLOCK 24 #define MMC_CMD_WRITE_BLOCK 24
#define MMC_CMD_APP_CMD 55
#define SD_CMD_APP_SET_BUS_WIDTH 6
#define SD_CMD_APP_OP_COND 41
#define MMC_MAX_BLOCK_SIZE 512 #define MMC_MAX_BLOCK_SIZE 512
@ -158,42 +166,41 @@ typedef struct mmc_cid
typedef struct mmc_csd typedef struct mmc_csd
{ {
uchar ecc:2, uint8_t csd_structure:2,
file_format:2, spec_ver:4,
tmp_write_protect:1, rsvd1:2;
perm_write_protect:1, uint8_t taac;
copy:1, uint8_t nsac;
file_format_grp:1; uint8_t tran_speed;
uint64_t content_prot_app:1, uint16_t ccc:12,
rsvd3:4, read_bl_len:4;
write_bl_partial:1, uint64_t read_bl_partial:1,
write_bl_len:4,
r2w_factor:3,
default_ecc:2,
wp_grp_enable:1,
wp_grp_size:5,
erase_grp_mult:5,
erase_grp_size:5,
c_size_mult1:3,
vdd_w_curr_max:3,
vdd_w_curr_min:3,
vdd_r_curr_max:3,
vdd_r_curr_min:3,
c_size:12,
rsvd2:2,
dsr_imp:1,
read_blk_misalign:1,
write_blk_misalign:1, write_blk_misalign:1,
read_bl_partial:1; read_blk_misalign:1,
dsr_imp:1,
ushort read_bl_len:4, rsvd2:2,
ccc:12; c_size:12,
uchar tran_speed; vdd_r_curr_min:3,
uchar nsac; vdd_r_curr_max:3,
uchar taac; vdd_w_curr_min:3,
uchar rsvd1:2, vdd_w_curr_max:3,
spec_vers:4, c_size_mult:3,
csd_structure:2; erase_blk_en:1,
sector_size:7,
wp_grp_size:7,
wp_grp_enable:1,
default_ecc:2,
r2w_factor:3,
write_bl_len:4,
write_bl_partial:1,
rsvd3:4,
content_prot_app:1;
uint8_t file_format_grp:1,
copy:1,
perm_write_protect:1,
tmp_write_protect:1,
file_format:2,
ecc:2;
} mmc_csd_t; } mmc_csd_t;

1
include/part.h
View file

@ -59,6 +59,7 @@ typedef struct block_dev_desc {
#define IF_TYPE_USB 4 #define IF_TYPE_USB 4
#define IF_TYPE_DOC 5 #define IF_TYPE_DOC 5
#define IF_TYPE_MMC 6 #define IF_TYPE_MMC 6
#define IF_TYPE_SD 7
/* Part types */ /* Part types */
#define PART_TYPE_UNKNOWN 0x00 #define PART_TYPE_UNKNOWN 0x00