+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2015 Freescale Semiconductor, Inc.
*
*
* Derived from EDM_CF_IMX6 code by TechNexion,Inc
* Ported to SolidRun microSOM by Rabeeh Khoury <rabeeh@solid-run.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
+#include <init.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/iomux.h>
#include <asm/arch/mx6-pins.h>
#include <asm/arch/mxc_hdmi.h>
-#include <asm/errno.h>
+#include <env.h>
+#include <linux/errno.h>
#include <asm/gpio.h>
-#include <asm/imx-common/iomux-v3.h>
-#include <asm/imx-common/video.h>
+#include <asm/mach-imx/iomux-v3.h>
+#include <asm/mach-imx/sata.h>
+#include <asm/mach-imx/video.h>
#include <mmc.h>
-#include <fsl_esdhc.h>
+#include <fsl_esdhc_imx.h>
#include <malloc.h>
#include <miiphy.h>
#include <netdev.h>
#include <asm/arch/sys_proto.h>
#include <spl.h>
#include <usb.h>
-#include <usb/ehci-fsl.h>
+#include <usb/ehci-ci.h>
DECLARE_GLOBAL_DATA_PTR;
#define ETH_PHY_RESET IMX_GPIO_NR(4, 15)
#define USB_H1_VBUS IMX_GPIO_NR(1, 0)
+enum board_type {
+ CUBOXI = 0x00,
+ HUMMINGBOARD = 0x01,
+ HUMMINGBOARD2 = 0x02,
+ UNKNOWN = 0x03,
+};
+
+static struct gpio_desc board_detect_desc[5];
+
+#define MEM_STRIDE 0x4000000
+static u32 get_ram_size_stride_test(u32 *base, u32 maxsize)
+{
+ volatile u32 *addr;
+ u32 save[64];
+ u32 cnt;
+ u32 size;
+ int i = 0;
+
+ /* First save the data */
+ for (cnt = 0; cnt < maxsize; cnt += MEM_STRIDE) {
+ addr = (volatile u32 *)((u32)base + cnt); /* pointer arith! */
+ sync ();
+ save[i++] = *addr;
+ sync ();
+ }
+
+ /* First write a signature */
+ * (volatile u32 *)base = 0x12345678;
+ for (size = MEM_STRIDE; size < maxsize; size += MEM_STRIDE) {
+ * (volatile u32 *)((u32)base + size) = size;
+ sync ();
+ if (* (volatile u32 *)((u32)base) == size) { /* We reached the overlapping address */
+ break;
+ }
+ }
+
+ /* Restore the data */
+ for (cnt = (maxsize - MEM_STRIDE); i > 0; cnt -= MEM_STRIDE) {
+ addr = (volatile u32 *)((u32)base + cnt); /* pointer arith! */
+ sync ();
+ *addr = save[i--];
+ sync ();
+ }
+
+ return (size);
+}
+
int dram_init(void)
{
- gd->ram_size = imx_ddr_size();
+ u32 max_size = imx_ddr_size();
+
+ gd->ram_size = get_ram_size_stride_test((u32 *) CONFIG_SYS_SDRAM_BASE,
+ (u32)max_size);
+
return 0;
}
IOMUX_PADS(PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
};
-static iomux_v3_cfg_t const hb_cbi_sense[] = {
+static iomux_v3_cfg_t const usdhc3_pads[] = {
+ IOMUX_PADS(PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD3_DAT4__SD3_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD3_DAT5__SD3_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD3_DAT6__SD3_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD3_DAT7__SD3_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD3_RST__SD3_RESET | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+};
+
+static iomux_v3_cfg_t const board_detect[] = {
/* These pins are for sensing if it is a CuBox-i or a HummingBoard */
IOMUX_PADS(PAD_KEY_ROW1__GPIO4_IO09 | MUX_PAD_CTRL(UART_PAD_CTRL)),
IOMUX_PADS(PAD_EIM_DA4__GPIO3_IO04 | MUX_PAD_CTRL(UART_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD4_DAT0__GPIO2_IO08 | MUX_PAD_CTRL(UART_PAD_CTRL)),
};
-static iomux_v3_cfg_t const usb_pads[] = {
- IOMUX_PADS(PAD_GPIO_0__GPIO1_IO00 | MUX_PAD_CTRL(NO_PAD_CTRL)),
+static iomux_v3_cfg_t const som_rev_detect[] = {
+ /* These pins are for sensing if it is a CuBox-i or a HummingBoard */
+ IOMUX_PADS(PAD_CSI0_DAT14__GPIO6_IO00 | MUX_PAD_CTRL(UART_PAD_CTRL)),
+ IOMUX_PADS(PAD_CSI0_DAT18__GPIO6_IO04 | MUX_PAD_CTRL(UART_PAD_CTRL)),
};
static void setup_iomux_uart(void)
SETUP_IOMUX_PADS(uart1_pads);
}
-static struct fsl_esdhc_cfg usdhc_cfg[1] = {
- {USDHC2_BASE_ADDR},
+static struct fsl_esdhc_cfg usdhc_cfg = {
+ .esdhc_base = USDHC2_BASE_ADDR,
+ .max_bus_width = 4,
+};
+
+static struct fsl_esdhc_cfg emmc_cfg = {
+ .esdhc_base = USDHC3_BASE_ADDR,
+ .max_bus_width = 8,
};
+int board_mmc_get_env_dev(int devno)
+{
+ return devno;
+}
+
+#define USDHC2_CD_GPIO IMX_GPIO_NR(1, 4)
+
int board_mmc_getcd(struct mmc *mmc)
{
- return 1; /* uSDHC2 is always present */
+ struct fsl_esdhc_cfg *cfg = mmc->priv;
+ int ret = 0;
+
+ switch (cfg->esdhc_base) {
+ case USDHC2_BASE_ADDR:
+ ret = !gpio_get_value(USDHC2_CD_GPIO);
+ break;
+ case USDHC3_BASE_ADDR:
+ ret = (mmc_get_op_cond(mmc) < 0) ? 0 : 1; /* eMMC/uSDHC3 has no CD GPIO */
+ break;
+ }
+
+ return ret;
+}
+
+static int mmc_init_spl(bd_t *bis)
+{
+ struct src *psrc = (struct src *)SRC_BASE_ADDR;
+ unsigned reg = readl(&psrc->sbmr1) >> 11;
+
+ /*
+ * Upon reading BOOT_CFG register the following map is done:
+ * Bit 11 and 12 of BOOT_CFG register can determine the current
+ * mmc port
+ * 0x1 SD2
+ * 0x2 SD3
+ */
+ switch (reg & 0x3) {
+ case 0x1:
+ SETUP_IOMUX_PADS(usdhc2_pads);
+ usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
+ gd->arch.sdhc_clk = usdhc_cfg.sdhc_clk;
+ return fsl_esdhc_initialize(bis, &usdhc_cfg);
+ case 0x2:
+ SETUP_IOMUX_PADS(usdhc3_pads);
+ emmc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
+ gd->arch.sdhc_clk = emmc_cfg.sdhc_clk;
+ return fsl_esdhc_initialize(bis, &emmc_cfg);
+ }
+
+ return -ENODEV;
}
int board_mmc_init(bd_t *bis)
{
- SETUP_IOMUX_PADS(usdhc2_pads);
- usdhc_cfg[0].esdhc_base = USDHC2_BASE_ADDR;
- usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
- gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk;
+ if (IS_ENABLED(CONFIG_SPL_BUILD))
+ return mmc_init_spl(bis);
- return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
+ return 0;
}
static iomux_v3_cfg_t const enet_pads[] = {
static void setup_iomux_enet(void)
{
+ struct gpio_desc desc;
+ int ret;
+
SETUP_IOMUX_PADS(enet_pads);
+ ret = dm_gpio_lookup_name("GPIO4_15", &desc);
+ if (ret) {
+ printf("%s: phy reset lookup failed\n", __func__);
+ return;
+ }
+
+ ret = dm_gpio_request(&desc, "phy-reset");
+ if (ret) {
+ printf("%s: phy reset request failed\n", __func__);
+ return;
+ }
+
gpio_direction_output(ETH_PHY_RESET, 0);
- mdelay(2);
+ mdelay(10);
gpio_set_value(ETH_PHY_RESET, 1);
+ udelay(100);
+
+ gpio_free_list_nodev(&desc, 1);
}
int board_phy_config(struct phy_device *phydev)
struct mii_dev *bus;
struct phy_device *phydev;
- int ret = enable_fec_anatop_clock(ENET_25MHZ);
+ int ret = enable_fec_anatop_clock(0, ENET_25MHZ);
if (ret)
return ret;
}
#endif /* CONFIG_VIDEO_IPUV3 */
-#ifdef CONFIG_USB_EHCI_MX6
-static void setup_usb(void)
-{
- SETUP_IOMUX_PADS(usb_pads);
-}
-
-int board_ehci_hcd_init(int port)
+int board_early_init_f(void)
{
- if (port == 1)
- gpio_direction_output(USB_H1_VBUS, 1);
+ setup_iomux_uart();
+#ifdef CONFIG_CMD_SATA
+ setup_sata();
+#endif
return 0;
}
-#endif
-int board_early_init_f(void)
+int board_init(void)
{
int ret = 0;
- setup_iomux_uart();
+
+ /* address of boot parameters */
+ gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
#ifdef CONFIG_VIDEO_IPUV3
ret = setup_display();
#endif
-#ifdef CONFIG_USB_EHCI_MX6
- setup_usb();
-#endif
return ret;
}
-int board_init(void)
+static int request_detect_gpios(void)
{
- /* address of boot parameters */
- gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+ int node;
+ int ret;
- return 0;
+ node = fdt_node_offset_by_compatible(gd->fdt_blob, 0,
+ "solidrun,hummingboard-detect");
+ if (node < 0)
+ return -ENODEV;
+
+ ret = gpio_request_list_by_name_nodev(offset_to_ofnode(node),
+ "detect-gpios", board_detect_desc,
+ ARRAY_SIZE(board_detect_desc), GPIOD_IS_IN);
+
+ return ret;
}
-static bool is_hummingboard(void)
+static int free_detect_gpios(void)
{
- int val1, val2;
-
- SETUP_IOMUX_PADS(hb_cbi_sense);
+ return gpio_free_list_nodev(board_detect_desc,
+ ARRAY_SIZE(board_detect_desc));
+}
- gpio_direction_input(IMX_GPIO_NR(4, 9));
- gpio_direction_input(IMX_GPIO_NR(3, 4));
+static enum board_type board_type(void)
+{
+ int val1, val2, val3;
- val1 = gpio_get_value(IMX_GPIO_NR(4, 9));
- val2 = gpio_get_value(IMX_GPIO_NR(3, 4));
+ SETUP_IOMUX_PADS(board_detect);
/*
* Machine selection -
- * Machine val1, val2
- * -------------------------
- * HB rev 3.x x 0
- * CBi 0 1
- * HB 1 1
+ * Machine val1, val2, val3
+ * ----------------------------
+ * HB2 x x 0
+ * HB rev 3.x x 0 x
+ * CBi 0 1 x
+ * HB 1 1 x
*/
+ gpio_direction_input(IMX_GPIO_NR(2, 8));
+ val3 = gpio_get_value(IMX_GPIO_NR(2, 8));
+
+ if (val3 == 0)
+ return HUMMINGBOARD2;
+
+ gpio_direction_input(IMX_GPIO_NR(3, 4));
+ val2 = gpio_get_value(IMX_GPIO_NR(3, 4));
+
if (val2 == 0)
+ return HUMMINGBOARD;
+
+ gpio_direction_input(IMX_GPIO_NR(4, 9));
+ val1 = gpio_get_value(IMX_GPIO_NR(4, 9));
+
+ if (val1 == 0) {
+ return CUBOXI;
+ } else {
+ return HUMMINGBOARD;
+ }
+}
+
+static bool is_rev_15_som(void)
+{
+ int val1, val2;
+ SETUP_IOMUX_PADS(som_rev_detect);
+
+ val1 = gpio_get_value(IMX_GPIO_NR(6, 0));
+ val2 = gpio_get_value(IMX_GPIO_NR(6, 4));
+
+ if (val1 == 1 && val2 == 0)
return true;
- else if (val1 == 0)
- return false;
- else
- return true;
+
+ return false;
+}
+
+static bool has_emmc(void)
+{
+ struct mmc *mmc;
+ mmc = find_mmc_device(2);
+ if (!mmc)
+ return 0;
+ return (mmc_get_op_cond(mmc) < 0) ? 0 : 1;
}
int checkboard(void)
{
- if (is_hummingboard())
- puts("Board: MX6 Hummingboard\n");
+ request_detect_gpios();
+
+ switch (board_type()) {
+ case CUBOXI:
+ puts("Board: MX6 Cubox-i");
+ break;
+ case HUMMINGBOARD:
+ puts("Board: MX6 HummingBoard");
+ break;
+ case HUMMINGBOARD2:
+ puts("Board: MX6 HummingBoard2");
+ break;
+ case UNKNOWN:
+ default:
+ puts("Board: Unknown\n");
+ goto out;
+ }
+
+ if (is_rev_15_som())
+ puts(" (som rev 1.5)\n");
else
- puts("Board: MX6 Cubox-i\n");
+ puts("\n");
+ free_detect_gpios();
+out:
return 0;
}
-static bool is_mx6q(void)
+/* Override the default implementation, DT model is not accurate */
+int show_board_info(void)
{
- if (is_cpu_type(MXC_CPU_MX6Q) || is_cpu_type(MXC_CPU_MX6D))
- return true;
- else
- return false;
+ return checkboard();
}
int board_late_init(void)
{
#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
- if (is_hummingboard())
- setenv("board_name", "HUMMINGBOARD");
- else
- setenv("board_name", "CUBOXI");
+ request_detect_gpios();
+
+ switch (board_type()) {
+ case CUBOXI:
+ env_set("board_name", "CUBOXI");
+ break;
+ case HUMMINGBOARD:
+ env_set("board_name", "HUMMINGBOARD");
+ break;
+ case HUMMINGBOARD2:
+ env_set("board_name", "HUMMINGBOARD2");
+ break;
+ case UNKNOWN:
+ default:
+ env_set("board_name", "CUBOXI");
+ }
- if (is_mx6q())
- setenv("board_rev", "MX6Q");
+ if (is_mx6dq())
+ env_set("board_rev", "MX6Q");
else
- setenv("board_rev", "MX6DL");
+ env_set("board_rev", "MX6DL");
+
+ if (is_rev_15_som())
+ env_set("som_rev", "V15");
+
+ if (has_emmc())
+ env_set("has_emmc", "yes");
+
+ free_detect_gpios();
#endif
return 0;
}
+/*
+ * This is not a perfect match. Avoid dependency on the DM GPIO driver needed
+ * for accurate board detection. Hummingboard2 DT is good enough for U-Boot on
+ * all Hummingboard/Cubox-i platforms.
+ */
+int board_fit_config_name_match(const char *name)
+{
+ char tmp_name[36];
+
+ snprintf(tmp_name, sizeof(tmp_name), "%s-hummingboard2-emmc-som-v15",
+ is_mx6dq() ? "imx6q" : "imx6dl");
+
+ return strcmp(name, tmp_name);
+}
+
#ifdef CONFIG_SPL_BUILD
#include <asm/arch/mx6-ddr.h>
static const struct mx6dq_iomux_ddr_regs mx6q_ddr_ioregs = {
.dram_sdclk_1 = 0x00020030,
.dram_cas = 0x00020030,
.dram_ras = 0x00020030,
- .dram_reset = 0x00020030,
+ .dram_reset = 0x000c0030,
.dram_sdcke0 = 0x00003000,
.dram_sdcke1 = 0x00003000,
.dram_sdba2 = 0x00000000,
.trcd = 1375,
.trcmin = 4875,
.trasmin = 3500,
- .SRT = 1,
};
static struct mx6_ddr3_cfg mem_ddr_4g = {
.density = 4,
.width = 16,
.banks = 8,
- .rowaddr = 15,
+ .rowaddr = 16,
.coladdr = 10,
.pagesz = 2,
.trcd = 1375,
writel(0x000003FF, &ccm->CCGR6);
}
-static void gpr_init(void)
-{
- struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
-
- /* enable AXI cache for VDOA/VPU/IPU */
- writel(0xF00000CF, &iomux->gpr[4]);
- /* set IPU AXI-id0 Qos=0xf(bypass) AXI-id1 Qos=0x7 */
- writel(0x007F007F, &iomux->gpr[6]);
- writel(0x007F007F, &iomux->gpr[7]);
-}
-
-/*
- * This section requires the differentiation between Solidrun mx6 boards, but
- * for now, it will configure only for the mx6dual hummingboard version.
- */
static void spl_dram_init(int width)
{
struct mx6_ddr_sysinfo sysinfo = {
.bi_on = 1, /* Bank interleaving enabled */
.sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */
.rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
+ .ddr_type = DDR_TYPE_DDR3,
+ .refsel = 1, /* Refresh cycles at 32KHz */
+ .refr = 7, /* 8 refresh commands per refresh cycle */
};
- if (is_cpu_type(MXC_CPU_MX6D) || is_cpu_type(MXC_CPU_MX6Q))
+ if (is_mx6dq())
mx6dq_dram_iocfg(width, &mx6q_ddr_ioregs, &mx6q_grp_ioregs);
else
mx6sdl_dram_iocfg(width, &mx6dl_ddr_ioregs, &mx6sdl_grp_ioregs);
projects / oweals / u-boot.git / blobdiff