mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-09-04 11:53:21 +09:00
![Marek Vasut](/assets/img/avatar_default.png)
This is needed to obtain the MAC from EEPROM/OTP only after the final env is populated, otherwise the ethaddr might be overriden. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Claudius Heine <ch@denx.de> Cc: Harald Seiler <hws@denx.de> Cc: Ludwig Zenz <lzenz@dh-electronics.com> Cc: Stefano Babic <sbabic@denx.de>
240 lines
4.7 KiB
C
240 lines
4.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* DHCOM DH-iMX6 PDK board support
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*
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* Copyright (C) 2017 Marek Vasut <marex@denx.de>
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*/
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#include <common.h>
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#include <dm.h>
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#include <eeprom.h>
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#include <image.h>
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#include <init.h>
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#include <net.h>
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#include <dm/device-internal.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/crm_regs.h>
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#include <asm/arch/imx-regs.h>
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#include <asm/arch/iomux.h>
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#include <asm/arch/mx6-pins.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/gpio.h>
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#include <asm/io.h>
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#include <asm/mach-imx/boot_mode.h>
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#include <asm/mach-imx/iomux-v3.h>
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#include <asm/mach-imx/sata.h>
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#include <ahci.h>
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#include <dwc_ahsata.h>
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#include <env.h>
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#include <errno.h>
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#include <fsl_esdhc_imx.h>
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#include <fuse.h>
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#include <i2c_eeprom.h>
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#include <mmc.h>
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#include <usb.h>
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#include <linux/delay.h>
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#include <usb/ehci-ci.h>
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DECLARE_GLOBAL_DATA_PTR;
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int dram_init(void)
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{
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gd->ram_size = imx_ddr_size();
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return 0;
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}
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/*
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* Do not overwrite the console
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* Use always serial for U-Boot console
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*/
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int overwrite_console(void)
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{
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return 1;
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}
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static int setup_fec_clock(void)
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{
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struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
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/* set gpr1[21] to select anatop clock */
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clrsetbits_le32(&iomuxc_regs->gpr[1], 0x1 << 21, 0x1 << 21);
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return enable_fec_anatop_clock(0, ENET_50MHZ);
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}
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#ifdef CONFIG_USB_EHCI_MX6
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static void setup_usb(void)
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{
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/*
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* Set daisy chain for otg_pin_id on MX6Q.
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* For MX6DL, this bit is reserved.
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*/
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imx_iomux_set_gpr_register(1, 13, 1, 0);
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}
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int board_usb_phy_mode(int port)
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{
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if (port == 1)
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return USB_INIT_HOST;
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else
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return USB_INIT_DEVICE;
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}
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#endif
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static int setup_dhcom_mac_from_fuse(void)
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{
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struct udevice *dev;
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ofnode eeprom;
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unsigned char enetaddr[6];
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int ret;
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ret = eth_env_get_enetaddr("ethaddr", enetaddr);
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if (ret) /* ethaddr is already set */
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return 0;
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imx_get_mac_from_fuse(0, enetaddr);
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if (is_valid_ethaddr(enetaddr)) {
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eth_env_set_enetaddr("ethaddr", enetaddr);
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return 0;
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}
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eeprom = ofnode_path("/soc/aips-bus@2100000/i2c@21a8000/eeprom@50");
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if (!ofnode_valid(eeprom)) {
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printf("Invalid hardware path to EEPROM!\n");
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return -ENODEV;
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}
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ret = uclass_get_device_by_ofnode(UCLASS_I2C_EEPROM, eeprom, &dev);
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if (ret) {
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printf("Cannot find EEPROM!\n");
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return ret;
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}
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ret = i2c_eeprom_read(dev, 0xfa, enetaddr, 0x6);
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if (ret) {
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printf("Error reading configuration EEPROM!\n");
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return ret;
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}
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if (is_valid_ethaddr(enetaddr))
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eth_env_set_enetaddr("ethaddr", enetaddr);
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return 0;
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}
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int board_early_init_f(void)
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{
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#ifdef CONFIG_USB_EHCI_MX6
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setup_usb();
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#endif
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return 0;
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}
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int board_init(void)
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{
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struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
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/* address of boot parameters */
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gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
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/* Enable eim_slow clocks */
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setbits_le32(&mxc_ccm->CCGR6, 0x1 << MXC_CCM_CCGR6_EMI_SLOW_OFFSET);
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setup_fec_clock();
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return 0;
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}
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#ifdef CONFIG_CMD_BMODE
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static const struct boot_mode board_boot_modes[] = {
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/* 4 bit bus width */
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{"sd2", MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
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{"sd3", MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
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/* 8 bit bus width */
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{"emmc", MAKE_CFGVAL(0x60, 0x58, 0x00, 0x00)},
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{NULL, 0},
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};
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#endif
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#define HW_CODE_BIT_0 IMX_GPIO_NR(2, 19)
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#define HW_CODE_BIT_1 IMX_GPIO_NR(6, 6)
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#define HW_CODE_BIT_2 IMX_GPIO_NR(2, 16)
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static int board_get_hwcode(void)
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{
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int hw_code;
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gpio_request(HW_CODE_BIT_0, "HW-code-bit-0");
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gpio_request(HW_CODE_BIT_1, "HW-code-bit-1");
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gpio_request(HW_CODE_BIT_2, "HW-code-bit-2");
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gpio_direction_input(HW_CODE_BIT_0);
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gpio_direction_input(HW_CODE_BIT_1);
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gpio_direction_input(HW_CODE_BIT_2);
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/* HW 100 + HW 200 = 00b; HW 300 = 01b */
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hw_code = ((gpio_get_value(HW_CODE_BIT_2) << 2) |
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(gpio_get_value(HW_CODE_BIT_1) << 1) |
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gpio_get_value(HW_CODE_BIT_0)) + 2;
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return hw_code;
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}
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int board_late_init(void)
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{
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u32 hw_code;
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char buf[16];
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setup_dhcom_mac_from_fuse();
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hw_code = board_get_hwcode();
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switch (get_cpu_type()) {
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case MXC_CPU_MX6SOLO:
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snprintf(buf, sizeof(buf), "imx6s-dhcom%1d", hw_code);
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break;
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case MXC_CPU_MX6DL:
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snprintf(buf, sizeof(buf), "imx6dl-dhcom%1d", hw_code);
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break;
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case MXC_CPU_MX6D:
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snprintf(buf, sizeof(buf), "imx6d-dhcom%1d", hw_code);
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break;
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case MXC_CPU_MX6Q:
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snprintf(buf, sizeof(buf), "imx6q-dhcom%1d", hw_code);
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break;
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default:
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snprintf(buf, sizeof(buf), "UNKNOWN%1d", hw_code);
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break;
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}
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env_set("dhcom", buf);
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#ifdef CONFIG_CMD_BMODE
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add_board_boot_modes(board_boot_modes);
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#endif
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return 0;
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}
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int checkboard(void)
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{
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puts("Board: DHCOM i.MX6\n");
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return 0;
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}
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#ifdef CONFIG_MULTI_DTB_FIT
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int board_fit_config_name_match(const char *name)
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{
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if (is_mx6dq()) {
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if (!strcmp(name, "imx6q-dhcom-pdk2"))
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return 0;
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} else if (is_mx6sdl()) {
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if (!strcmp(name, "imx6dl-dhcom-pdk2"))
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return 0;
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}
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return -1;
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}
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#endif
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