[U-Boot] [PATCH] omap34xx: SPL: enable MMC raw boot with u-boot.img

[Denis 'GNUtoo' Carikli]

The following commit enabled raw SPL booting:
  22d90d560a omap3: Use raw SPL by default for mmc1
but it was reverted by the following commit:
  821c89d38c Revert "omap3: Use raw SPL by default for mmc1"
because SPL is unable to distinguish between RAW images and
garbage.

However if CONFIG_SPL_RAW_IMAGE_SUPPORT is disabled, SPL does
identify if there is a valid image with spl_parse_image_header.

With this change, and CONFIG_SPL_RAW_IMAGE_SUPPORT disabled,
raw MMC boot will be tried first, and if it fails, it FS will
be tried.

The two scenarios have been tested on a BeagleBoard XM Revision C1.

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo at cyberdimension.org>
---
 arch/arm/mach-omap2/boot-common.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/mach-omap2/boot-common.c b/arch/arm/mach-omap2/boot-common.c
index 734fa9d9e6..a48244e1c5 100644
--- a/arch/arm/mach-omap2/boot-common.c
+++ b/arch/arm/mach-omap2/boot-common.c
@@ -132,8 +132,10 @@ void save_omap_boot_params(void)
 	    (boot_device <= MMC_BOOT_DEVICES_END)) {
 		switch (boot_device) {
 		case BOOT_DEVICE_MMC1:
+#ifdef CONFIG_SPL_RAW_IMAGE_SUPPORT
 			boot_mode = MMCSD_MODE_FS;
 			break;
+#endif
 		case BOOT_DEVICE_MMC2:
 			boot_mode = MMCSD_MODE_RAW;
 			break;
-- 
2.24.0