[U-Boot] [PATCH v2] omap: Correct the fastboot product var

[Sam Protsenko]

"fastboot flashall" expects "fastboot getvar product" value to be one of
values provided in android-info.txt file (in AOSP), from "require
board=" list. Before this patch, "am57xx" is returned for all AM57xx
based boards, as it's set in $board env var from SYS_BOARD in
board/ti/am57xx/Kconfig file, which is used for default implementation
of "fastboot getvar product".

In order to fix that inconsistency, let's do next:
  1. In U-Boot: override fastboot.product, reusing the value from
     $board_name
  2. In AOSP: provide values for all AM57xx boards we can use to
     device/ti/beagle_x15/board-info.txt file

This way requirements check in "fastboot flashall" will work as
expected, verifying that user tries to flash images to the board which
those images were built for.

Signed-off-by: Sam Protsenko <semen.protsenko at linaro.org>
---
Changes in v2:
  - reuse the value from $board_name instead of hard-coding it to
    "beagle_x15board" (corresponding changes will be done in AOSP)

 arch/arm/mach-omap2/utils.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm/mach-omap2/utils.c b/arch/arm/mach-omap2/utils.c
index edf5edcb68..7d01446940 100644
--- a/arch/arm/mach-omap2/utils.c
+++ b/arch/arm/mach-omap2/utils.c
@@ -129,12 +129,25 @@ static inline void omap_set_fastboot_userdata_size(void)
 {
 }
 #endif /* CONFIG_FASTBOOT_FLASH_MMC */
+
+static void omap_set_fastboot_product(void)
+{
+	const char *board_name;
+
+	board_name = env_get("board_name");
+	if (board_name == NULL)
+		printf("Warning: fastboot.product: unknown board\n");
+
+	env_set("fastboot.product", board_name);
+}
+
 void omap_set_fastboot_vars(void)
 {
 	omap_set_fastboot_cpu();
 	omap_set_fastboot_secure();
 	omap_set_fastboot_board_rev();
 	omap_set_fastboot_userdata_size();
+	omap_set_fastboot_product();
 }
 #endif /* CONFIG_FASTBOOT_FLASH */
 
-- 
2.20.1