Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / drivers / mmc / fsl_esdhc_spl.c

diff --git a/qemu/roms/u-boot/drivers/mmc/fsl_esdhc_spl.c b/qemu/roms/u-boot/drivers/mmc/fsl_esdhc_spl.c
new file mode 100644 (file)
index 0000000..b1cb4b3
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/mmc/fsl_esdhc_spl.c
@@ -0,0 +1,150 @@
+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#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
+
+
+void mmc_spl_load_image(uint32_t offs, unsigned int size, void *vdst)
+{
+       uint blk_start, blk_cnt, err;
+
+       struct mmc *mmc = find_mmc_device(0);
+       if (!mmc) {
+               puts("spl: mmc device not found!!\n");
+               hang();
+       }
+
+       if (mmc_init(mmc)) {
+               puts("MMC init failed\n");
+               return;
+       }
+
+       blk_start = ALIGN(offs, mmc->read_bl_len) / mmc->read_bl_len;
+       blk_cnt = ALIGN(size, mmc->read_bl_len) / mmc->read_bl_len;
+
+       err = mmc->block_dev.block_read(0, blk_start, blk_cnt, vdst);
+       if (err != blk_cnt) {
+               puts("spl: mmc read failed!!\n");
+               hang();
+       }
+}
+
+/*
+ * 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;
+#ifndef CONFIG_FSL_CORENET
+       uchar *tmp_buf;
+       u32 blklen;
+       uchar val;
+       uint i, byte_num;
+#endif
+       u32 offset, code_len;
+       struct mmc *mmc;
+
+       mmc = find_mmc_device(0);
+       if (!mmc) {
+               puts("spl: mmc device not found!!\n");
+               hang();
+       }
+
+#ifdef CONFIG_FSL_CORENET
+       offset = CONFIG_SYS_MMC_U_BOOT_OFFS;
+       code_len = CONFIG_SYS_MMC_U_BOOT_SIZE;
+#else
+       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
+       */
+#endif
+       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");
+#ifndef CONFIG_FSL_CORENET
+               free(tmp_buf);
+#endif
+               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)();
+}