[U-Boot] [PATCH] powerpc/t1023rdb: eMMC boot without external SD card

[Shengzhou Liu]

eMMC has no CD and WP pins, it needs to add board-specific
board_mmc_getcd() and board_mmc_getwp() in SPL to support
eMMC boot without external SD card inserted.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu at freescale.com>
---
 board/freescale/t102xrdb/spl.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/board/freescale/t102xrdb/spl.c b/board/freescale/t102xrdb/spl.c
index 1a3a996..9c581ff 100644
--- a/board/freescale/t102xrdb/spl.c
+++ b/board/freescale/t102xrdb/spl.c
@@ -30,6 +30,30 @@ unsigned long get_board_ddr_clk(void)
 	return CONFIG_DDR_CLK_FREQ;
 }
 
+#if defined(CONFIG_SPL_MMC_BOOT)
+#define GPIO1_SD_SEL 0x00020000
+int board_mmc_getcd(struct mmc *mmc)
+{
+	ccsr_gpio_t __iomem *pgpio = (void *)(CONFIG_SYS_MPC85xx_GPIO_ADDR);
+	u32 val = in_be32(&pgpio->gpdat);
+
+	/* GPIO1_14, 0: eMMC, 1: SD */
+	val &= GPIO1_SD_SEL;
+
+	return val ? -1 : 1;
+}
+
+int board_mmc_getwp(struct mmc *mmc)
+{
+	ccsr_gpio_t __iomem *pgpio = (void *)(CONFIG_SYS_MPC85xx_GPIO_ADDR);
+	u32 val = in_be32(&pgpio->gpdat);
+
+	val &= GPIO1_SD_SEL;
+
+	return val ? -1 : 0;
+}
+#endif
+
 void board_init_f(ulong bootflag)
 {
 	u32 plat_ratio, sys_clk, ccb_clk;
-- 
2.1.0.27.g96db324