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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * DHCOM DH-iMX6 PDK board support
- *
- * Copyright (C) 2017 Marek Vasut <marex@denx.de>
- */
- #include <common.h>
- #include <dm.h>
- #include <eeprom.h>
- #include <image.h>
- #include <init.h>
- #include <net.h>
- #include <dm/device-internal.h>
- #include <asm/arch/clock.h>
- #include <asm/arch/crm_regs.h>
- #include <asm/arch/imx-regs.h>
- #include <asm/arch/iomux.h>
- #include <asm/arch/mx6-pins.h>
- #include <asm/arch/sys_proto.h>
- #include <asm/gpio.h>
- #include <asm/io.h>
- #include <asm/mach-imx/boot_mode.h>
- #include <asm/mach-imx/iomux-v3.h>
- #include <asm/mach-imx/sata.h>
- #include <ahci.h>
- #include <dwc_ahsata.h>
- #include <env.h>
- #include <errno.h>
- #include <fsl_esdhc_imx.h>
- #include <fuse.h>
- #include <i2c_eeprom.h>
- #include <mmc.h>
- #include <usb.h>
- #include <usb/ehci-ci.h>
- DECLARE_GLOBAL_DATA_PTR;
- int dram_init(void)
- {
- gd->ram_size = imx_ddr_size();
- return 0;
- }
- /*
- * Do not overwrite the console
- * Use always serial for U-Boot console
- */
- int overwrite_console(void)
- {
- return 1;
- }
- static int setup_fec_clock(void)
- {
- struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
- /* set gpr1[21] to select anatop clock */
- clrsetbits_le32(&iomuxc_regs->gpr[1], 0x1 << 21, 0x1 << 21);
- return enable_fec_anatop_clock(0, ENET_50MHZ);
- }
- #ifdef CONFIG_USB_EHCI_MX6
- static void setup_usb(void)
- {
- /*
- * Set daisy chain for otg_pin_id on MX6Q.
- * For MX6DL, this bit is reserved.
- */
- imx_iomux_set_gpr_register(1, 13, 1, 0);
- }
- int board_usb_phy_mode(int port)
- {
- if (port == 1)
- return USB_INIT_HOST;
- else
- return USB_INIT_DEVICE;
- }
- #endif
- static int setup_dhcom_mac_from_fuse(void)
- {
- struct udevice *dev;
- ofnode eeprom;
- unsigned char enetaddr[6];
- int ret;
- ret = eth_env_get_enetaddr("ethaddr", enetaddr);
- if (ret) /* ethaddr is already set */
- return 0;
- imx_get_mac_from_fuse(0, enetaddr);
- if (is_valid_ethaddr(enetaddr)) {
- eth_env_set_enetaddr("ethaddr", enetaddr);
- return 0;
- }
- eeprom = ofnode_path("/soc/aips-bus@2100000/i2c@21a8000/eeprom@50");
- if (!ofnode_valid(eeprom)) {
- printf("Invalid hardware path to EEPROM!\n");
- return -ENODEV;
- }
- ret = uclass_get_device_by_ofnode(UCLASS_I2C_EEPROM, eeprom, &dev);
- if (ret) {
- printf("Cannot find EEPROM!\n");
- return ret;
- }
- ret = i2c_eeprom_read(dev, 0xfa, enetaddr, 0x6);
- if (ret) {
- printf("Error reading configuration EEPROM!\n");
- return ret;
- }
- if (is_valid_ethaddr(enetaddr))
- eth_env_set_enetaddr("ethaddr", enetaddr);
- return 0;
- }
- int board_early_init_f(void)
- {
- #ifdef CONFIG_USB_EHCI_MX6
- setup_usb();
- #endif
- return 0;
- }
- int board_init(void)
- {
- struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
- /* address of boot parameters */
- gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
- /* Enable eim_slow clocks */
- setbits_le32(&mxc_ccm->CCGR6, 0x1 << MXC_CCM_CCGR6_EMI_SLOW_OFFSET);
- setup_dhcom_mac_from_fuse();
- setup_fec_clock();
- return 0;
- }
- #ifdef CONFIG_CMD_BMODE
- static const struct boot_mode board_boot_modes[] = {
- /* 4 bit bus width */
- {"sd2", MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
- {"sd3", MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
- /* 8 bit bus width */
- {"emmc", MAKE_CFGVAL(0x60, 0x58, 0x00, 0x00)},
- {NULL, 0},
- };
- #endif
- #define HW_CODE_BIT_0 IMX_GPIO_NR(2, 19)
- #define HW_CODE_BIT_1 IMX_GPIO_NR(6, 6)
- #define HW_CODE_BIT_2 IMX_GPIO_NR(2, 16)
- static int board_get_hwcode(void)
- {
- int hw_code;
- gpio_request(HW_CODE_BIT_0, "HW-code-bit-0");
- gpio_request(HW_CODE_BIT_1, "HW-code-bit-1");
- gpio_request(HW_CODE_BIT_2, "HW-code-bit-2");
- gpio_direction_input(HW_CODE_BIT_0);
- gpio_direction_input(HW_CODE_BIT_1);
- gpio_direction_input(HW_CODE_BIT_2);
- /* HW 100 + HW 200 = 00b; HW 300 = 01b */
- hw_code = ((gpio_get_value(HW_CODE_BIT_2) << 2) |
- (gpio_get_value(HW_CODE_BIT_1) << 1) |
- gpio_get_value(HW_CODE_BIT_0)) + 2;
- return hw_code;
- }
- int board_late_init(void)
- {
- u32 hw_code;
- char buf[16];
- hw_code = board_get_hwcode();
- switch (get_cpu_type()) {
- case MXC_CPU_MX6SOLO:
- snprintf(buf, sizeof(buf), "imx6s-dhcom%1d", hw_code);
- break;
- case MXC_CPU_MX6DL:
- snprintf(buf, sizeof(buf), "imx6dl-dhcom%1d", hw_code);
- break;
- case MXC_CPU_MX6D:
- snprintf(buf, sizeof(buf), "imx6d-dhcom%1d", hw_code);
- break;
- case MXC_CPU_MX6Q:
- snprintf(buf, sizeof(buf), "imx6q-dhcom%1d", hw_code);
- break;
- default:
- snprintf(buf, sizeof(buf), "UNKNOWN%1d", hw_code);
- break;
- }
- env_set("dhcom", buf);
- #ifdef CONFIG_CMD_BMODE
- add_board_boot_modes(board_boot_modes);
- #endif
- return 0;
- }
- int checkboard(void)
- {
- puts("Board: DHCOM i.MX6\n");
- return 0;
- }
- #ifdef CONFIG_MULTI_DTB_FIT
- int board_fit_config_name_match(const char *name)
- {
- if (is_mx6dq()) {
- if (!strcmp(name, "imx6q-dhcom-pdk2"))
- return 0;
- } else if (is_mx6sdl()) {
- if (!strcmp(name, "imx6dl-dhcom-pdk2"))
- return 0;
- }
- return -1;
- }
- #endif
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