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-rw-r--r--cpu/pxa/mmc.c499
1 files changed, 336 insertions, 163 deletions
diff --git a/cpu/pxa/mmc.c b/cpu/pxa/mmc.c
index d76e0cd..c0cfe65 100644
--- a/cpu/pxa/mmc.c
+++ b/cpu/pxa/mmc.c
@@ -30,14 +30,13 @@
#ifdef CONFIG_MMC
-extern int
-fat_register_device(block_dev_desc_t *dev_desc, int part_no);
+extern int fat_register_device(block_dev_desc_t * dev_desc, int part_no);
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);
}
/*
@@ -45,72 +44,59 @@ block_dev_desc_t * mmc_get_dev(int dev)
* and other parameters
*/
static uchar mmc_buf[MMC_BLOCK_SIZE];
-static mmc_csd_t mmc_csd;
+static uchar spec_ver;
static int mmc_ready = 0;
+static int wide = 0;
-
-static uchar *
+static uint32_t *
/****************************************************/
mmc_cmd(ushort cmd, ushort argh, ushort argl, ushort cmdat)
/****************************************************/
{
- static uchar resp[20];
+ static uint32_t resp[4], a, b, c;
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_I_MASK = ~MMC_I_MASK_CLK_IS_OFF;
- while (!(MMC_I_REG & MMC_I_REG_CLK_IS_OFF));
- MMC_CMD = cmd;
- MMC_ARGH = argh;
- MMC_ARGL = argl;
- MMC_CMDAT = cmdat;
+ while (!(MMC_I_REG & MMC_I_REG_CLK_IS_OFF)) ;
+ MMC_CMD = cmd;
+ MMC_ARGH = argh;
+ MMC_ARGL = argl;
+ MMC_CMDAT = cmdat | wide;
MMC_I_MASK = ~MMC_I_MASK_END_CMD_RES;
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;
- debug("MMC status %x\n", status);
+ debug("MMC status 0x%08x\n", status);
if (status & MMC_STAT_TIME_OUT_RESPONSE) {
return 0;
}
- switch (cmdat & 0x3) {
- case MMC_CMDAT_R1:
- case MMC_CMDAT_R3:
- words = 3;
- break;
-
- case MMC_CMDAT_R2:
- words = 8;
- break;
-
- default:
- return 0;
+ /* Linux says:
+ * Did I mention this is Sick. We always need to
+ * discard the upper 8 bits of the first 16-bit word.
+ */
+ a = (MMC_RES & 0xffff);
+ for (i = 0; i < 4; i++) {
+ b = (MMC_RES & 0xffff);
+ c = (MMC_RES & 0xffff);
+ resp[i] = (a << 24) | (b << 8) | (c >> 8);
+ a = c;
+ debug("MMC resp[%d] = %#08x\n", i, resp[i]);
}
- 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;
}
int
/****************************************************/
-mmc_block_read(uchar *dst, ulong src, ulong len)
+mmc_block_read(uchar * dst, ulong src, ulong len)
/****************************************************/
{
- uchar *resp;
ushort argh, argl;
ulong status;
@@ -118,13 +104,13 @@ mmc_block_read(uchar *dst, ulong src, ulong len)
return 0;
}
- debug("mmc_block_rd dst %lx src %lx len %d\n", (ulong)dst, src, len);
+ debug("mmc_block_rd dst %lx src %lx len %d\n", (ulong) dst, src, len);
argh = len >> 16;
argl = len & 0xffff;
/* 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 */
argh = src >> 16;
@@ -133,17 +119,17 @@ mmc_block_read(uchar *dst, ulong src, ulong len)
MMC_RDTO = 0xffff;
MMC_NOB = 1;
MMC_BLKLEN = len;
- resp = mmc_cmd(MMC_CMD_READ_BLOCK, argh, argl,
- MMC_CMDAT_R1|MMC_CMDAT_READ|MMC_CMDAT_BLOCK|MMC_CMDAT_DATA_EN);
-
+ mmc_cmd(MMC_CMD_READ_BLOCK, argh, argl,
+ MMC_CMDAT_R1 | MMC_CMDAT_READ | MMC_CMDAT_BLOCK |
+ MMC_CMDAT_DATA_EN);
MMC_I_MASK = ~MMC_I_MASK_RXFIFO_RD_REQ;
while (len) {
if (MMC_I_REG & MMC_I_REG_RXFIFO_RD_REQ) {
#ifdef CONFIG_PXA27X
int i;
- for (i=min(len,32); i; i--) {
- *dst++ = * ((volatile uchar *) &MMC_RXFIFO);
+ for (i = min(len, 32); i; i--) {
+ *dst++ = *((volatile uchar *)&MMC_RXFIFO);
len--;
}
#else
@@ -158,7 +144,7 @@ mmc_block_read(uchar *dst, ulong src, ulong len)
}
}
MMC_I_MASK = ~MMC_I_MASK_DATA_TRAN_DONE;
- while (!(MMC_I_REG & MMC_I_REG_DATA_TRAN_DONE));
+ while (!(MMC_I_REG & MMC_I_REG_DATA_TRAN_DONE)) ;
status = MMC_STAT;
if (status & MMC_STAT_ERRORS) {
printf("MMC_STAT error %lx\n", status);
@@ -169,10 +155,9 @@ mmc_block_read(uchar *dst, ulong src, ulong len)
int
/****************************************************/
-mmc_block_write(ulong dst, uchar *src, int len)
+mmc_block_write(ulong dst, uchar * src, int len)
/****************************************************/
{
- uchar *resp;
ushort argh, argl;
ulong status;
@@ -180,13 +165,13 @@ mmc_block_write(ulong dst, uchar *src, int len)
return 0;
}
- debug("mmc_block_wr dst %lx src %lx len %d\n", dst, (ulong)src, len);
+ debug("mmc_block_wr dst %lx src %lx len %d\n", dst, (ulong) src, len);
argh = len >> 16;
argl = len & 0xffff;
/* 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 */
argh = dst >> 16;
@@ -194,15 +179,16 @@ mmc_block_write(ulong dst, uchar *src, int len)
MMC_STRPCL = MMC_STRPCL_STOP_CLK;
MMC_NOB = 1;
MMC_BLKLEN = len;
- resp = mmc_cmd(MMC_CMD_WRITE_BLOCK, argh, argl,
- MMC_CMDAT_R1|MMC_CMDAT_WRITE|MMC_CMDAT_BLOCK|MMC_CMDAT_DATA_EN);
+ mmc_cmd(MMC_CMD_WRITE_BLOCK, argh, argl,
+ MMC_CMDAT_R1 | MMC_CMDAT_WRITE | MMC_CMDAT_BLOCK |
+ MMC_CMDAT_DATA_EN);
MMC_I_MASK = ~MMC_I_MASK_TXFIFO_WR_REQ;
while (len) {
if (MMC_I_REG & MMC_I_REG_TXFIFO_WR_REQ) {
- int i, bytes = min(32,len);
+ int i, bytes = min(32, len);
- for (i=0; i<bytes; i++) {
+ for (i = 0; i < bytes; i++) {
MMC_TXFIFO = *src++;
}
if (bytes < 32) {
@@ -217,9 +203,9 @@ mmc_block_write(ulong dst, uchar *src, int len)
}
}
MMC_I_MASK = ~MMC_I_MASK_DATA_TRAN_DONE;
- while (!(MMC_I_REG & MMC_I_REG_DATA_TRAN_DONE));
+ while (!(MMC_I_REG & MMC_I_REG_DATA_TRAN_DONE)) ;
MMC_I_MASK = ~MMC_I_MASK_PRG_DONE;
- while (!(MMC_I_REG & MMC_I_REG_PRG_DONE));
+ while (!(MMC_I_REG & MMC_I_REG_PRG_DONE)) ;
status = MMC_STAT;
if (status & MMC_STAT_ERRORS) {
printf("MMC_STAT error %lx\n", status);
@@ -228,10 +214,9 @@ mmc_block_write(ulong dst, uchar *src, int len)
return 0;
}
-
int
/****************************************************/
-mmc_read(ulong src, uchar *dst, int size)
+mmc_read(ulong src, uchar * dst, int size)
/****************************************************/
{
ulong end, part_start, part_end, part_len, aligned_start, aligned_end;
@@ -257,33 +242,46 @@ mmc_read(ulong src, uchar *dst, int size)
aligned_end = mmc_block_address & end;
/* all block aligned accesses */
- debug("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);
+ debug
+ ("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) {
part_len = mmc_block_size - part_start;
- debug("ps 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_start, mmc_block_size)) < 0) {
+ debug
+ ("ps 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_start, mmc_block_size)) <
+ 0) {
return -1;
}
- memcpy(dst, mmc_buf+part_start, part_len);
+ memcpy(dst, mmc_buf + part_start, part_len);
dst += part_len;
src += part_len;
}
- debug("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);
+ debug
+ ("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) {
- debug("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) {
+ debug
+ ("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) {
return -1;
}
}
- debug("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);
+ debug
+ ("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) {
- debug("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);
+ debug
+ ("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) {
return -1;
}
@@ -294,7 +292,7 @@ mmc_read(ulong src, uchar *dst, int size)
int
/****************************************************/
-mmc_write(uchar *src, ulong dst, int size)
+mmc_write(uchar * src, ulong dst, int size)
/****************************************************/
{
ulong end, part_start, part_end, part_len, aligned_start, aligned_end;
@@ -320,36 +318,50 @@ mmc_write(uchar *src, ulong dst, int size)
aligned_end = mmc_block_address & end;
/* all block aligned accesses */
- debug("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);
+ debug
+ ("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) {
part_len = mmc_block_size - part_start;
- debug("ps src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
- (ulong)src, dst, end, part_start, part_end, aligned_start, aligned_end);
- if ((mmc_block_read(mmc_buf, aligned_start, mmc_block_size)) < 0) {
+ debug
+ ("ps src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n",
+ (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;
}
- memcpy(mmc_buf+part_start, src, part_len);
- if ((mmc_block_write(aligned_start, mmc_buf, mmc_block_size)) < 0) {
+ memcpy(mmc_buf + part_start, src, part_len);
+ if ((mmc_block_write(aligned_start, mmc_buf, mmc_block_size)) <
+ 0) {
return -1;
}
dst += part_len;
src += part_len;
}
- debug("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);
+ debug
+ ("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) {
- debug("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) {
+ debug
+ ("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) {
return -1;
}
}
- debug("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);
+ debug
+ ("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) {
- debug("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);
+ debug
+ ("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) {
return -1;
}
@@ -363,127 +375,288 @@ mmc_write(uchar *src, ulong dst, int size)
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;
ulong src = blknr * mmc_block_size + CFG_MMC_BASE;
- mmc_read(src, (uchar *)dst, blkcnt*mmc_block_size);
+ mmc_read(src, (uchar *) dst, blkcnt * mmc_block_size);
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
/****************************************************/
mmc_init(int verbose)
/****************************************************/
{
- int retries, rc = -ENODEV;
- uchar *resp;
+ int retries, rc = -ENODEV;
+ uint32_t cid_resp[4];
+ uint32_t *resp;
+ uint16_t rca = 0;
+
+ /* Reset device interface type */
+ mmc_dev.if_type = IF_TYPE_UNKNOWN;
-#ifdef CONFIG_LUBBOCK
- set_GPIO_mode( GPIO6_MMCCLK_MD );
- set_GPIO_mode( GPIO8_MMCCS0_MD );
+#if defined (CONFIG_LUBBOCK) || (defined (CONFIG_GUMSTIX) && !defined(CONFIG_PXA27X))
+ set_GPIO_mode(GPIO6_MMCCLK_MD);
+ set_GPIO_mode(GPIO8_MMCCS0_MD);
#endif
- CKEN |= CKEN12_MMC; /* enable MMC unit clock */
+ CKEN |= CKEN12_MMC; /* enable MMC unit clock */
#if defined(CONFIG_ADSVIX)
/* turn on the power */
GPCR(114) = GPIO_bit(114);
udelay(1000);
#endif
- mmc_csd.c_size = 0;
-
- MMC_CLKRT = MMC_CLKRT_0_3125MHZ;
- MMC_RESTO = MMC_RES_TO_MAX;
- MMC_SPI = MMC_SPI_DISABLE;
+ MMC_CLKRT = MMC_CLKRT_0_3125MHZ;
+ MMC_RESTO = MMC_RES_TO_MAX;
+ MMC_SPI = MMC_SPI_DISABLE;
/* reset */
- retries = 10;
- resp = mmc_cmd(0, 0, 0, 0);
- resp = mmc_cmd(1, 0x00ff, 0xc000, MMC_CMDAT_INIT|MMC_CMDAT_BUSY|MMC_CMDAT_R3);
- while (retries-- && resp && !(resp[4] & 0x80)) {
- debug("resp %x %x\n", resp[0], resp[1]);
+ mmc_cmd(MMC_CMD_RESET, 0, 0, MMC_CMDAT_INIT | MMC_CMDAT_R0);
+ udelay(200000);
+ retries = 3;
+ while (retries--) {
+ 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
udelay(10000);
#else
- udelay(50);
+ udelay(200000);
#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 */
- 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) {
- /* TODO configure mmc driver depending on card attributes */
- 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;
+ memcpy(cid_resp, resp, sizeof(cid_resp));
/* MMC exists, get CSD too */
- resp = mmc_cmd(MMC_CMD_SET_RCA, MMC_DEFAULT_RCA, 0, MMC_CMDAT_R1);
- resp = mmc_cmd(MMC_CMD_SEND_CSD, MMC_DEFAULT_RCA, 0, MMC_CMDAT_R2);
+ resp = mmc_cmd(MMC_CMD_SET_RCA, 0, 0, MMC_CMDAT_R1);
+ 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) {
- mmc_csd_t *csd = (mmc_csd_t *)resp;
- memcpy(&mmc_csd, csd, sizeof(csd));
+ mmc_decode_csd(resp);
rc = 0;
mmc_ready = 1;
- /* FIXME add verbose printout for csd */
}
+
+ mmc_decode_cid(cid_resp);
}
+ MMC_CLKRT = 0; /* 20 MHz */
+ resp = mmc_cmd(MMC_CMD_SELECT_CARD, rca, 0, MMC_CMDAT_R1);
+
#ifdef CONFIG_PXA27X
- MMC_CLKRT = 1; /* 10 MHz - see Intel errata */
-#else
- MMC_CLKRT = 0; /* 20 MHz */
+ 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
- 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;
}
-int
-mmc_ident(block_dev_desc_t *dev)
+int mmc_ident(block_dev_desc_t * dev)
{
return 0;
}
-int
-mmc2info(ulong addr)
+int mmc2info(ulong addr)
{
- /* FIXME hard codes to 32 MB device */
- if (addr >= CFG_MMC_BASE && addr < CFG_MMC_BASE + 0x02000000) {
+ if (addr >= CFG_MMC_BASE
+ && addr < CFG_MMC_BASE + (mmc_dev.lba * mmc_dev.blksz)) {
return 1;
}
return 0;
}
-#endif /* CONFIG_MMC */
+#endif /* CONFIG_MMC */
generated by cgit v1.1 at 2024-11-28 04:37:57 +0000