* Fix CONFIG_NET_MULTI support in include/net.h
* Patches by Kyle Harris, 13 Mar 2003:
- Add FAT partition support
- Add command support for FAT
- Add command support for MMC
----
- Add Intel PXA support for video
- Add Intel PXA support for MMC
----
- Enable MMC and FAT for lubbock board
- Other misc changes for lubbock board
diff --git a/cpu/pxa/mmc.c b/cpu/pxa/mmc.c
new file mode 100644
index 0000000..783e90c
--- /dev/null
+++ b/cpu/pxa/mmc.c
@@ -0,0 +1,483 @@
+/*
+ * (C) Copyright 2003
+ * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <common.h>
+#include <mmc.h>
+#include <asm/errno.h>
+#include <asm/arch/hardware.h>
+
+#ifdef CONFIG_MMC
+
+extern int
+fat_register_read(int(*block_read)(int device, ulong blknr, ulong blkcnt, uchar *buffer));
+
+/*
+ * FIXME needs to read cid and csd info to determine block size
+ * and other parameters
+ */
+static uchar mmc_buf[MMC_BLOCK_SIZE];
+static mmc_csd_t mmc_csd;
+static int mmc_ready = 0;
+
+
+static uchar *
+/****************************************************/
+mmc_cmd(ushort cmd, ushort argh, ushort argl, ushort cmdat)
+/****************************************************/
+{
+ static uchar resp[20];
+ ulong status;
+ int words, i;
+
+ debug("mmc_cmd %x %x %x %x\n", cmd, argh, argl, cmdat);
+ 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;
+ 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));
+
+ status = MMC_STAT;
+ debug("MMC status %x\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;
+ }
+ 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)
+/****************************************************/
+{
+ uchar *resp;
+ ushort argh, argl;
+ ulong status;
+
+ if (len == 0)
+ {
+ return 0;
+ }
+
+ 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);
+
+ /* send read command */
+ argh = src >> 16;
+ argl = src & 0xffff;
+ MMC_STRPCL = MMC_STRPCL_STOP_CLK;
+ 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_I_MASK = ~MMC_I_MASK_RXFIFO_RD_REQ;
+ while (len)
+ {
+ if (MMC_I_REG & MMC_I_REG_RXFIFO_RD_REQ)
+ {
+ *dst++ = MMC_RXFIFO;
+ len--;
+ }
+ status = MMC_STAT;
+ if (status & MMC_STAT_ERRORS)
+ {
+ printf("MMC_STAT error %lx\n", status);
+ return -1;
+ }
+ }
+ MMC_I_MASK = ~MMC_I_MASK_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);
+ return -1;
+ }
+ return 0;
+}
+
+int
+/****************************************************/
+mmc_block_write(ulong dst, uchar *src, int len)
+/****************************************************/
+{
+ uchar *resp;
+ ushort argh, argl;
+ ulong status;
+
+ if (len == 0)
+ {
+ return 0;
+ }
+
+ 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);
+
+ /* send write command */
+ argh = dst >> 16;
+ argl = dst & 0xffff;
+ 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_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);
+
+ for (i=0; i<bytes; i++)
+ {
+ MMC_TXFIFO = *src++;
+ }
+ if (bytes < 32)
+ {
+ MMC_PRTBUF = MMC_PRTBUF_BUF_PART_FULL;
+ }
+ len -= bytes;
+ }
+ status = MMC_STAT;
+ if (status & MMC_STAT_ERRORS)
+ {
+ printf("MMC_STAT error %lx\n", status);
+ return -1;
+ }
+ }
+ MMC_I_MASK = ~MMC_I_MASK_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));
+ status = MMC_STAT;
+ if (status & MMC_STAT_ERRORS)
+ {
+ printf("MMC_STAT error %lx\n", status);
+ return -1;
+ }
+ return 0;
+}
+
+
+int
+/****************************************************/
+mmc_read(ulong src, uchar *dst, int size)
+/****************************************************/
+{
+ ulong end, part_start, part_end, part_len, aligned_start, aligned_end;
+ ulong mmc_block_size, mmc_block_address;
+
+ if (size == 0)
+ {
+ return 0;
+ }
+
+ if (!mmc_ready)
+ {
+ printf("Please initial the MMC first\n");
+ return -1;
+ }
+
+ mmc_block_size = MMC_BLOCK_SIZE;
+ mmc_block_address = ~(mmc_block_size - 1);
+
+ src -= CFG_MMC_BASE;
+ end = src + size;
+ part_start = ~mmc_block_address & src;
+ part_end = ~mmc_block_address & end;
+ aligned_start = mmc_block_address & src;
+ 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);
+ 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)
+ {
+ return -1;
+ }
+ 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);
+ 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)
+ {
+ 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);
+ 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);
+ if ((mmc_block_read(mmc_buf, aligned_end, mmc_block_size)) < 0)
+ {
+ return -1;
+ }
+ memcpy(dst, mmc_buf, part_end);
+ }
+ return 0;
+}
+
+int
+/****************************************************/
+mmc_write(uchar *src, ulong dst, int size)
+/****************************************************/
+{
+ ulong end, part_start, part_end, part_len, aligned_start, aligned_end;
+ ulong mmc_block_size, mmc_block_address;
+
+ if (size == 0)
+ {
+ return 0;
+ }
+
+ if (!mmc_ready)
+ {
+ printf("Please initial the MMC first\n");
+ return -1;
+ }
+
+ mmc_block_size = MMC_BLOCK_SIZE;
+ mmc_block_address = ~(mmc_block_size - 1);
+
+ dst -= CFG_MMC_BASE;
+ end = dst + size;
+ part_start = ~mmc_block_address & dst;
+ part_end = ~mmc_block_address & end;
+ aligned_start = mmc_block_address & dst;
+ 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);
+ 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)
+ {
+ return -1;
+ }
+ 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);
+ 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)
+ {
+ 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);
+ 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);
+ if ((mmc_block_read(mmc_buf, aligned_end, mmc_block_size)) < 0)
+ {
+ return -1;
+ }
+ memcpy(mmc_buf, src, part_end);
+ if ((mmc_block_write(aligned_end, mmc_buf, mmc_block_size)) < 0)
+ {
+ return -1;
+ }
+ }
+ return 0;
+}
+
+int
+/****************************************************/
+mmc_bread(int dev_num, ulong blknr, ulong blkcnt, uchar *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);
+ return blkcnt;
+}
+
+int
+/****************************************************/
+mmc_init(int verbose)
+/****************************************************/
+{
+ int retries, rc = -ENODEV;
+ uchar *resp;
+
+#ifdef CONFIG_LUBBOCK
+ set_GPIO_mode( GPIO6_MMCCLK_MD );
+ set_GPIO_mode( GPIO8_MMCCS0_MD );
+#endif
+ CKEN |= CKEN12_MMC; /* enable MMC unit clock */
+
+ mmc_csd.c_size = 0;
+
+ 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]);
+ udelay(50);
+ resp = mmc_cmd(1, 0x00ff, 0xff00, MMC_CMDAT_BUSY|MMC_CMDAT_R3);
+ }
+
+ /* try to get card id */
+ resp = mmc_cmd(2, 0, 0, MMC_CMDAT_R2);
+ 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);
+ }
+
+ /* 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);
+ if (resp)
+ {
+ mmc_csd_t *csd = (mmc_csd_t *)resp;
+ memcpy(&mmc_csd, csd, sizeof(csd));
+ rc = 0;
+ mmc_ready = 1;
+ /* FIXME add verbose printout for csd */
+ }
+ }
+
+ MMC_CLKRT = 0; /* 20 MHz */
+ resp = mmc_cmd(7, MMC_DEFAULT_RCA, 0, MMC_CMDAT_R1);
+
+ fat_register_read(mmc_bread);
+
+ return rc;
+}
+
+int
+mmc_ident(block_dev_desc_t *dev)
+{
+ return 0;
+}
+
+int
+mmc2info(ulong addr)
+{
+ /* FIXME hard codes to 32 MB device */
+ if (addr >= CFG_MMC_BASE && addr < CFG_MMC_BASE + 0x02000000)
+ {
+ return 1;
+ }
+ return 0;
+}
+
+#endif