[u-boot][master][PATCH 2/3] pico-imx7d: add baseboard SD card boot detect

egyszeregy at freemail.hu egyszeregy at freemail.hu
Sat Dec 17 23:50:13 CET 2022


From: Benjamin Szőke <egyszeregy at freemail.hu>

Take over codes from Techenxion to support mmc autodetect boot for pico-imx7d.

Signed-off-by: Benjamin Szőke <egyszeregy at freemail.hu>
---
 board/technexion/pico-imx7d/pico-imx7d.c     | 82 +++++++++++++++++
 board/technexion/pico-imx7d/pico-imx7d_spl.c | 92 ++++++++++++++++++--
 include/configs/pico-imx7d.h                 |  4 +-
 3 files changed, 170 insertions(+), 8 deletions(-)

diff --git a/board/technexion/pico-imx7d/pico-imx7d.c b/board/technexion/pico-imx7d/pico-imx7d.c
index 7db34abcb1..7e47f15e71 100644
--- a/board/technexion/pico-imx7d/pico-imx7d.c
+++ b/board/technexion/pico-imx7d/pico-imx7d.c
@@ -21,6 +21,8 @@
 #include <power/pmic.h>
 #include <power/pfuze3000_pmic.h>
 #include "../../freescale/common/pfuze.h"
+#include <mmc.h>
+#include <asm/mach-imx/boot_mode.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -159,6 +161,53 @@ int board_phy_config(struct phy_device *phydev)
 }
 #endif
 
+#if CONFIG_IS_ENABLED(FSL_ESDHC_IMX)
+int check_mmc_autodetect(void)
+{
+	char *autodetect_str = env_get("mmcautodetect");
+
+	if ((autodetect_str != NULL) &&
+		(strcmp(autodetect_str, "yes") == 0)) {
+		return 1;
+	}
+
+	return 0;
+}
+
+void board_late_mmc_init(void)
+{
+	int dev_no = 0;
+	char cmd[32];
+	char mmcblk[32];
+	
+	if (!check_mmc_autodetect())
+		return;
+
+	switch (get_boot_device()) {
+		case SD3_BOOT:
+		case MMC3_BOOT:
+			env_set("bootdev", "MMC3");
+			dev_no = 2;
+			break;
+		case SD1_BOOT:
+			env_set("bootdev", "SD1");
+			dev_no = 0;
+			break;
+		default:
+			printf("Wrong boot device!");
+	}
+	
+	env_set_ulong("mmcdev", dev_no);
+	
+	/* Set mmcblk env */
+	sprintf(mmcblk, "/dev/mmcblk%dp2 rootwait rw", dev_no);
+	env_set("mmcroot", mmcblk);
+	
+	sprintf(cmd, "mmc dev %d", dev_no);
+	run_command(cmd, 0);
+}
+#endif
+
 static void setup_iomux_uart(void)
 {
 	imx_iomux_v3_setup_multiple_pads(uart5_pads, ARRAY_SIZE(uart5_pads));
@@ -210,6 +259,10 @@ int board_late_init(void)
 
 	set_wdog_reset(wdog);
 
+#if defined(CONFIG_ENV_IS_IN_MMC) || defined(CONFIG_ENV_IS_NOWHERE)
+	board_late_mmc_init();
+#endif /* CONFIG_ENV_IS_IN_MMC or CONFIG_ENV_IS_NOWHERE */
+
 	/*
 	 * Do not assert internal WDOG_RESET_B_DEB(controlled by bit 4),
 	 * since we use PMIC_PWRON to reset the board.
@@ -219,6 +272,29 @@ int board_late_init(void)
 	return 0;
 }
 
+#ifdef CONFIG_OF_BOARD_SETUP
+int ft_board_setup(void *blob, struct bd_info *bd)
+{
+	const int *cell;
+	int offs;
+	uint32_t cma_size;
+	unsigned int dram_size;
+
+	dram_size = imx_ddr_size() / 1024 / 1024;
+	offs = fdt_path_offset(blob, "/reserved-memory/linux,cma");
+	cell = fdt_getprop(blob, offs, "size", NULL);
+	cma_size = fdt32_to_cpu(cell[0]);
+	if (dram_size == 512) {
+		/* CMA is aligned by 32MB on i.mx8mq,
+		   so CMA size can only be multiple of 32MB */
+		cma_size = env_get_ulong("cma_size", 10, (6 * 32) * 1024 * 1024);
+		fdt_setprop_u32(blob, offs, "size", (uint64_t)cma_size);
+	}
+
+	return 0;
+}
+#endif
+
 int checkboard(void)
 {
 	puts("Board: i.MX7D PICOSOM\n");
@@ -244,3 +320,9 @@ int board_ehci_hcd_init(int port)
 	}
 	return 0;
 }
+
+/* This should be defined for each board */
+__weak int mmc_map_to_kernel_blk(int dev_no)
+{
+    return dev_no;
+}
diff --git a/board/technexion/pico-imx7d/pico-imx7d_spl.c b/board/technexion/pico-imx7d/pico-imx7d_spl.c
index 0009c55022..499e4a49e0 100644
--- a/board/technexion/pico-imx7d/pico-imx7d_spl.c
+++ b/board/technexion/pico-imx7d/pico-imx7d_spl.c
@@ -18,6 +18,8 @@
 #include <asm/gpio.h>
 #include <fsl_esdhc_imx.h>
 #include <spl.h>
+#include <command.h>
+#include <asm/mach-imx/boot_mode.h>
 
 #if defined(CONFIG_SPL_BUILD)
 
@@ -158,7 +160,20 @@ void reset_cpu(void)
 #define USDHC_PAD_CTRL (PAD_CTL_DSE_3P3V_32OHM | PAD_CTL_SRE_SLOW | \
 	PAD_CTL_HYS | PAD_CTL_PUE | PAD_CTL_PUS_PU47KOHM)
 
-static iomux_v3_cfg_t const usdhc3_pads[] = {
+#define USDHC1_CD_GPIO	IMX_GPIO_NR(5, 0)
+/* EMMC/SD */
+static iomux_v3_cfg_t const usdhc1_pads[] = {
+	MX7D_PAD_SD1_CLK__SD1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD1_CMD__SD1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD1_DATA0__SD1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD1_DATA1__SD1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD1_DATA2__SD1_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD1_DATA3__SD1_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD1_CD_B__GPIO5_IO0  | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+};
+
+#define USDHC3_CD_GPIO IMX_GPIO_NR(1, 14)
+static iomux_v3_cfg_t const usdhc3_emmc_pads[] = {
 	MX7D_PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX7D_PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	MX7D_PAD_SD3_DATA0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
@@ -172,20 +187,83 @@ static iomux_v3_cfg_t const usdhc3_pads[] = {
 	MX7D_PAD_GPIO1_IO14__GPIO1_IO14 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 };
 
-static struct fsl_esdhc_cfg usdhc_cfg[1] = {
+static struct fsl_esdhc_cfg usdhc_cfg[2] = {
 	{USDHC3_BASE_ADDR},
+	{USDHC1_BASE_ADDR},
 };
 
 int board_mmc_getcd(struct mmc *mmc)
 {
-	/* Assume uSDHC3 emmc is always present */
-	return 1;
+	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
+	int ret = 0;
+
+	switch (cfg->esdhc_base) {
+	case USDHC1_BASE_ADDR:
+		ret = !gpio_get_value(USDHC1_CD_GPIO); /* Assume uSDHC1 sd is always present */
+		break;
+	case USDHC3_BASE_ADDR:
+		ret = !gpio_get_value(USDHC3_CD_GPIO); /* Assume uSDHC3 emmc is always present */
+		break;
+	}
+
+	return ret;
 }
 
 int board_mmc_init(struct bd_info *bis)
 {
-	imx_iomux_v3_setup_multiple_pads(usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
-	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
-	return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
+	int ret;
+	u32 index = 0;
+
+	/*
+	 * Following map is done:
+	 * (USDHC)	(Physical Port)
+	 * usdhc3	SOM MicroSD/MMC
+	 * usdhc1	Carrier board MicroSD
+	 * Always set boot USDHC as mmc0
+	 */
+
+	imx_iomux_v3_setup_multiple_pads(
+				usdhc3_emmc_pads, ARRAY_SIZE(usdhc3_emmc_pads));
+	gpio_direction_input(USDHC3_CD_GPIO);
+
+	imx_iomux_v3_setup_multiple_pads(
+				usdhc1_pads, ARRAY_SIZE(usdhc1_pads));
+	gpio_direction_input(USDHC1_CD_GPIO);
+
+	switch (get_boot_device()) {
+		case SD1_BOOT:
+			usdhc_cfg[0].esdhc_base = USDHC1_BASE_ADDR;
+			usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
+			usdhc_cfg[0].max_bus_width = 4;
+			usdhc_cfg[1].esdhc_base = USDHC3_BASE_ADDR;
+			usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
+			usdhc_cfg[1].max_bus_width = 4;
+			break;
+		case MMC3_BOOT:
+			usdhc_cfg[0].esdhc_base = USDHC3_BASE_ADDR;
+			usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
+			usdhc_cfg[0].max_bus_width = 8;
+			usdhc_cfg[1].esdhc_base = USDHC1_BASE_ADDR;
+			usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
+			usdhc_cfg[1].max_bus_width = 4;
+			break;
+		case SD3_BOOT:
+		default:
+			usdhc_cfg[0].esdhc_base = USDHC3_BASE_ADDR;
+			usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
+			usdhc_cfg[0].max_bus_width = 4;
+			usdhc_cfg[1].esdhc_base = USDHC1_BASE_ADDR;
+			usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
+			usdhc_cfg[1].max_bus_width = 4;
+			break;
+	}
+
+	for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
+		ret = fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
 }
 #endif
diff --git a/include/configs/pico-imx7d.h b/include/configs/pico-imx7d.h
index 159bf4c68c..3a647cde97 100644
--- a/include/configs/pico-imx7d.h
+++ b/include/configs/pico-imx7d.h
@@ -21,7 +21,7 @@
 #define CONFIG_MXC_UART_BASE		UART5_IPS_BASE_ADDR
 
 /* MMC Config */
-#define CFG_SYS_FSL_ESDHC_ADDR	0
+#define CFG_SYS_FSL_ESDHC_ADDR	USDHC3_BASE_ADDR
 
 #define CONFIG_DFU_ENV_SETTINGS \
 	"dfu_alt_info=" \
@@ -87,9 +87,11 @@
 		"name=rootfs,size=0,uuid=${uuid_gpt_rootfs}\0" \
 	"fastboot_partition_alias_system=rootfs\0" \
 	"setup_emmc=mmc dev 0; gpt write mmc 0 $partitions; reset;\0" \
+	"mmcautodetect=yes\0" \
 	PICO_BOOT_ENV
 
 #define BOOT_TARGET_DEVICES(func) \
+	func(MMC, mmc, 3) \
 	func(MMC, mmc, 0) \
 	func(USB, usb, 0) \
 	func(PXE, pxe, na) \
-- 
2.38.1.windows.1



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