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-rw-r--r--drivers/mmc/Makefile3
-rw-r--r--drivers/mmc/fsl_esdhc_spl.c130
-rw-r--r--drivers/mmc/mmc.c2
3 files changed, 135 insertions, 0 deletions
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index 49e5cb9..bedf833 100644
--- a/drivers/mmc/Makefile
+++ b/drivers/mmc/Makefile
@@ -32,6 +32,9 @@ COBJS-$(CONFIG_TEGRA_MMC) += tegra_mmc.o
COBJS-$(CONFIG_DWMMC) += dw_mmc.o
COBJS-$(CONFIG_EXYNOS_DWMMC) += exynos_dw_mmc.o
COBJS-$(CONFIG_ZYNQ_SDHCI) += zynq_sdhci.o
+ifdef CONFIG_SPL_BUILD
+COBJS-$(CONFIG_SPL_MMC_BOOT) += fsl_esdhc_spl.o
+endif
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
diff --git a/drivers/mmc/fsl_esdhc_spl.c b/drivers/mmc/fsl_esdhc_spl.c
new file mode 100644
index 0000000..25a1dff
--- /dev/null
+++ b/drivers/mmc/fsl_esdhc_spl.c
@@ -0,0 +1,130 @@
+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * 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 <common.h>
+#include <mmc.h>
+#include <malloc.h>
+
+/*
+ * The environment variables are written to just after the u-boot image
+ * on SDCard, so we must read the MBR to get the start address and code
+ * length of the u-boot image, then calculate the address of the env.
+ */
+#define ESDHC_BOOT_IMAGE_SIZE 0x48
+#define ESDHC_BOOT_IMAGE_ADDR 0x50
+#define MBRDBR_BOOT_SIG_55 0x1fe
+#define MBRDBR_BOOT_SIG_AA 0x1ff
+#define CONFIG_CFG_DATA_SECTOR 0
+
+/*
+ * The main entry for mmc booting. It's necessary that SDRAM is already
+ * configured and available since this code loads the main U-Boot image
+ * from mmc into SDRAM and starts it from there.
+ */
+
+void __noreturn mmc_boot(void)
+{
+ __attribute__((noreturn)) void (*uboot)(void);
+ uint blk_start, blk_cnt, err;
+ u32 blklen;
+ uchar *tmp_buf;
+ uchar val;
+ uint i, byte_num;
+ u32 offset, code_len;
+ struct mmc *mmc;
+
+ mmc = find_mmc_device(0);
+ if (!mmc) {
+ puts("spl: mmc device not found!!\n");
+ hang();
+ }
+
+ blklen = mmc->read_bl_len;
+ tmp_buf = malloc(blklen);
+ if (!tmp_buf) {
+ puts("spl: malloc memory failed!!\n");
+ hang();
+ }
+ memset(tmp_buf, 0, blklen);
+
+ /*
+ * Read source addr from sd card
+ */
+ err = mmc->block_dev.block_read(0, CONFIG_CFG_DATA_SECTOR, 1, tmp_buf);
+ if (err != 1) {
+ puts("spl: mmc read failed!!\n");
+ free(tmp_buf);
+ hang();
+ }
+
+ val = *(tmp_buf + MBRDBR_BOOT_SIG_55);
+ if (0x55 != val) {
+ puts("spl: mmc signature is not valid!!\n");
+ free(tmp_buf);
+ hang();
+ }
+ val = *(tmp_buf + MBRDBR_BOOT_SIG_AA);
+ if (0xAA != val) {
+ puts("spl: mmc signature is not valid!!\n");
+ free(tmp_buf);
+ hang();
+ }
+
+ byte_num = 4;
+ offset = 0;
+ for (i = 0; i < byte_num; i++) {
+ val = *(tmp_buf + ESDHC_BOOT_IMAGE_ADDR + i);
+ offset = (offset << 8) + val;
+ }
+ offset += CONFIG_SYS_MMC_U_BOOT_OFFS;
+ /* Get the code size from offset 0x48 */
+ byte_num = 4;
+ code_len = 0;
+ for (i = 0; i < byte_num; i++) {
+ val = *(tmp_buf + ESDHC_BOOT_IMAGE_SIZE + i);
+ code_len = (code_len << 8) + val;
+ }
+ code_len -= CONFIG_SYS_MMC_U_BOOT_OFFS;
+ /*
+ * Load U-Boot image from mmc into RAM
+ */
+ blk_start = ALIGN(offset, mmc->read_bl_len) / mmc->read_bl_len;
+ blk_cnt = ALIGN(code_len, mmc->read_bl_len) / mmc->read_bl_len;
+ err = mmc->block_dev.block_read(0, blk_start, blk_cnt,
+ (uchar *)CONFIG_SYS_MMC_U_BOOT_DST);
+ if (err != blk_cnt) {
+ puts("spl: mmc read failed!!\n");
+ free(tmp_buf);
+ hang();
+ }
+
+ /*
+ * Clean d-cache and invalidate i-cache, to
+ * make sure that no stale data is executed.
+ */
+ flush_cache(CONFIG_SYS_MMC_U_BOOT_DST, CONFIG_SYS_MMC_U_BOOT_SIZE);
+
+ /*
+ * Jump to U-Boot image
+ */
+ uboot = (void *)CONFIG_SYS_MMC_U_BOOT_START;
+ (*uboot)();
+}
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 4da8db9..5502675 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -1483,7 +1483,9 @@ int mmc_initialize(bd_t *bis)
if (board_mmc_init(bis) < 0)
cpu_mmc_init(bis);
+#ifndef CONFIG_SPL_BUILD
print_mmc_devices(',');
+#endif
do_preinit();
return 0;