[U-Boot] [PATCH v4 8/8] km_arm: enable POST for these boards

[Valentin Longchamp]

The current km_arm boards have a Power-On test jumper. When this
jumper is set, this triggers some Power-On tests on the board.

This patch enables the support of this jumper for starting the
memory_regions test when the jumper is set.

Signed-off-by: Valentin Longchamp <valentin.longchamp at keymile.com>
Signed-off-by: Holger Brunck <holger.brunck at keymile.com>
Cc: Prafulla Wadaskar <prafulla at marvell.com>
---
Changes for v2:
 - adapted to CONFIG_POST_EXTERNAL_WORD_FUNCS
 - implemented suggestion from Sergei
Changes for v3:
 - moved arch_memory_test_prepare from post/board/km_arm to
   board/keymile/km_arm/km_arm.c
Changes for v4:
 - moved post_word adress because of conflict with bootcounter
---
 board/keymile/km_arm/km_arm.c |   33 +++++++++++++++++++++++++++++++++
 include/configs/km/km_arm.h   |    6 ++++++
 2 files changed, 39 insertions(+), 0 deletions(-)

diff --git a/board/keymile/km_arm/km_arm.c b/board/keymile/km_arm/km_arm.c
index 8670567..b057182 100644
--- a/board/keymile/km_arm/km_arm.c
+++ b/board/keymile/km_arm/km_arm.c
@@ -488,6 +488,39 @@ int get_scl(void)
 }
 #endif
 
+#if defined(CONFIG_POST)
+
+#define KM_POST_EN_L	44
+#define POST_WORD_OFF	8
+
+int post_hotkeys_pressed(void)
+{
+	return !kw_gpio_get_value(KM_POST_EN_L);
+}
+
+ulong post_word_load(void)
+{
+	volatile void* addr = (void *) (gd->ram_size - BOOTCOUNT_ADDR + POST_WORD_OFF);
+	return in_le32(addr);
+
+}
+void post_word_store(ulong value)
+{
+	volatile void* addr = (void *) (gd->ram_size - BOOTCOUNT_ADDR + POST_WORD_OFF);
+	out_le32(addr, value);
+}
+
+int arch_memory_test_prepare(u32 *vstart, u32 *size, phys_addr_t *phys_offset)
+{
+	*vstart = CONFIG_SYS_SDRAM_BASE;
+
+	/* we go up to relocation plus a 1 MB margin */
+	*size = CONFIG_SYS_TEXT_BASE - (1<<20);
+
+	return 0;
+}
+#endif
+
 #if defined(CONFIG_SYS_EEPROM_WREN)
 int eeprom_write_enable(unsigned dev_addr, int state)
 {
diff --git a/include/configs/km/km_arm.h b/include/configs/km/km_arm.h
index a3725c0..0271e7e 100644
--- a/include/configs/km/km_arm.h
+++ b/include/configs/km/km_arm.h
@@ -272,4 +272,10 @@ int get_scl(void);
 /* address for the bootcount (taken from end of RAM) */
 #define BOOTCOUNT_ADDR          (CONFIG_KM_RESERVED_PRAM)
 
+/* enable POST tests */
+#define CONFIG_POST	(CONFIG_SYS_POST_MEM_REGIONS)
+#define CONFIG_POST_SKIP_ENV_FLAGS
+#define CONFIG_POST_EXTERNAL_WORD_FUNCS
+#define CONFIG_CMD_DIAG
+
 #endif /* _CONFIG_KM_ARM_H */
-- 
1.7.1