Add the files for the SMN42 board

1 files changed, 157 insertions, 0 deletions

diff --git a/cpu/arm720t/lpc2292/mmc.c b/cpu/arm720t/lpc2292/mmc.c
new file mode 100644
index 0000000000..fd7f149b66
--- /dev/null
+++ b/cpu/arm720t/lpc2292/mmc.c
@@ -0,0 +1,157 @@
+/*
+ * 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>
+#include <part.h>
+#include <fat.h>
+#include "mmc_hw.h"
+#include <asm/arch/spi.h>
+
+#ifdef CONFIG_MMC
+
+#undef MMC_DEBUG
+
+static block_dev_desc_t mmc_dev;
+
+/* these are filled out by a call to mmc_hw_get_parameters */
+static int hw_size;		/* in kbytes */
+static int hw_nr_sects;
+static int hw_sect_size;	/* in bytes */
+
+block_dev_desc_t * mmc_get_dev(int dev)
+{
+	return (block_dev_desc_t *)(&mmc_dev);
+}
+
+unsigned long mmc_block_read(int dev,
+			     unsigned long start,
+			     lbaint_t blkcnt,
+			     void *buffer)
+{
+	unsigned long rc = 0;
+	unsigned char *p = (unsigned char *)buffer;
+	unsigned long i;
+	unsigned long addr = start;
+
+#ifdef MMC_DEBUG
+	printf("mmc_block_read: start=%lu, blkcnt=%lu\n", start,
+		 (unsigned long)blkcnt);
+#endif
+
+	for(i = 0; i < (unsigned long)blkcnt; i++) {
+#ifdef MMC_DEBUG
+		printf("mmc_read_sector: addr=%lu, buffer=%p\n", addr, p);
+#endif
+		(void)mmc_read_sector(addr, p);
+		rc++;
+		addr++;
+		p += hw_sect_size;
+	}
+
+	return rc;
+}
+
+/*-----------------------------------------------------------------------------
+ * Read hardware paramterers (sector size, size, number of sectors)
+ */
+static int mmc_hw_get_parameters(void)
+{
+	unsigned char csddata[16];
+	unsigned int sizemult;
+	unsigned int size;
+
+	mmc_read_csd(csddata);
+	hw_sect_size = 1<<(csddata[5] & 0x0f);
+	size = ((csddata[6]&0x03)<<10)+(csddata[7]<<2)+(csddata[8]&0xc0);
+	sizemult = ((csddata[10] & 0x80)>>7)+((csddata[9] & 0x03)<<1);
+	hw_nr_sects = (size+1)*(1<<(sizemult+2));
+	hw_size = hw_nr_sects*hw_sect_size/1024;
+
+#ifdef MMC_DEBUG
+	printf("mmc_hw_get_parameters: hw_sect_size=%d, hw_nr_sects=%d, "
+		 "hw_size=%d\n", hw_sect_size, hw_nr_sects, hw_size);
+#endif
+
+	return 0;
+}
+
+int mmc_init(int verbose)
+{
+	int ret = -ENODEV;
+
+	if (verbose)
+		printf("mmc_init\n");
+
+	spi_init();
+	/* this meeds to be done twice */
+	mmc_hw_init();
+	udelay(1000);
+	mmc_hw_init();
+
+	mmc_hw_get_parameters();
+
+	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;
+	mmc_dev.blksz = hw_sect_size;
+	mmc_dev.lba = hw_nr_sects;
+	sprintf((char*)mmc_dev.vendor, "Unknown vendor");
+	sprintf((char*)mmc_dev.product, "Unknown product");
+	sprintf((char*)mmc_dev.revision, "N/A");
+	mmc_dev.removable = 0;	/* should be true??? */
+	mmc_dev.block_read = mmc_block_read;
+
+	fat_register_device(&mmc_dev, 1);
+
+	ret = 0;
+
+	return ret;
+}
+
+int mmc_write(uchar * src, ulong dst, int size)
+{
+#ifdef MMC_DEBUG
+	printf("mmc_write: src=%p, dst=%lu, size=%u\n", src, dst, size);
+#endif
+	/* Since mmc2info always returns 0 this function will never be called */
+	return 0;
+}
+
+int mmc_read(ulong src, uchar * dst, int size)
+{
+#ifdef MMC_DEBUG
+	printf("mmc_read: src=%lu, dst=%p, size=%u\n", src, dst, size);
+#endif
+	/* Since mmc2info always returns 0 this function will never be called */
+	return 0;
+}
+
+int mmc2info(ulong addr)
+{
+	/* This function is used by cmd_cp to determine if source or destination
+	 address resides on MMC-card or not. We do not support copy to and from
+	 MMC-card so we always return 0. */
+	return 0;
+}
+
+#endif /* CONFIG_MMC */