omap: add MMC and FAT support to SPL

- Add MMC raw and FAT mode boot support for OMAP
- Provide a means by which parameters passed by ROM-code
  can be saved in u-boot.
- Save boot mode related information passed by OMAP4 ROM-code
  and use it to determine where to load the u-boot from
- Assumes that the image has a mkimage header. Gets the
  payload size and load address from this header. If the
  header is not detected assume u-boot.bin as payload

Signed-off-by: Aneesh V <aneesh@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/arch/arm/cpu/armv7/omap4/board.c b/arch/arm/cpu/armv7/omap4/board.c
index 54dd509194..2e5739a1dd 100644
--- a/arch/arm/cpu/armv7/omap4/board.c
+++ b/arch/arm/cpu/armv7/omap4/board.c
@@ -39,6 +39,27 @@ DECLARE_GLOBAL_DATA_PTR;
 
 u32 *const omap4_revision = (u32 *)OMAP4_SRAM_SCRATCH_OMAP4_REV;
 
+#ifdef CONFIG_SPL_BUILD
+/*
+ * We use static variables because global data is not ready yet.
+ * Initialized data is available in SPL right from the beginning.
+ * We would not typically need to save these parameters in regular
+ * U-Boot. This is needed only in SPL at the moment.
+ */
+u32 omap4_boot_device = BOOT_DEVICE_MMC1;
+u32 omap4_boot_mode = MMCSD_MODE_FAT;
+
+u32 omap_boot_device(void)
+{
+	return omap4_boot_device;
+}
+
+u32 omap_boot_mode(void)
+{
+	return omap4_boot_mode;
+}
+#endif
+
 void do_set_mux(u32 base, struct pad_conf_entry const *array, int size)
 {
 	int i;