diff options
Diffstat (limited to 'roms/u-boot/board/gateworks/venice/spl.c')
| -rw-r--r-- | roms/u-boot/board/gateworks/venice/spl.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/roms/u-boot/board/gateworks/venice/spl.c b/roms/u-boot/board/gateworks/venice/spl.c new file mode 100644 index 000000000..ea500d4f8 --- /dev/null +++ b/roms/u-boot/board/gateworks/venice/spl.c @@ -0,0 +1,205 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2021 Gateworks Corporation + */ + +#include <common.h> +#include <cpu_func.h> +#include <hang.h> +#include <i2c.h> +#include <image.h> +#include <init.h> +#include <log.h> +#include <spl.h> +#include <asm/io.h> +#include <asm/mach-imx/gpio.h> +#include <asm/mach-imx/iomux-v3.h> +#include <asm/arch/clock.h> +#include <asm/arch/imx8mm_pins.h> +#include <asm/arch/sys_proto.h> +#include <asm/mach-imx/boot_mode.h> +#include <asm/arch/ddr.h> +#include <asm-generic/gpio.h> + +#include <dm/uclass.h> +#include <dm/device.h> +#include <dm/uclass-internal.h> +#include <dm/device-internal.h> + +#include <power/mp5416.h> + +#include "gsc.h" +#include "lpddr4_timing.h" + +#define PCIE_RSTN IMX_GPIO_NR(4, 6) + +DECLARE_GLOBAL_DATA_PTR; + +static void spl_dram_init(int size) +{ + struct dram_timing_info *dram_timing; + + switch (size) { + case 1: + dram_timing = &dram_timing_1gb; + break; + case 4: + dram_timing = &dram_timing_4gb; + break; + default: + printf("Unknown DDR configuration: %d GiB\n", size); + dram_timing = &dram_timing_1gb; + size = 1; + } + + printf("DRAM : LPDDR4 %d GiB\n", size); + ddr_init(dram_timing); + writel(size, M4_BOOTROM_BASE_ADDR); +} + +#define UART_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_FSEL1) +#define WDOG_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_ODE | PAD_CTL_PUE | PAD_CTL_PE) + +static iomux_v3_cfg_t const uart_pads[] = { + IMX8MM_PAD_UART2_RXD_UART2_RX | MUX_PAD_CTRL(UART_PAD_CTRL), + IMX8MM_PAD_UART2_TXD_UART2_TX | MUX_PAD_CTRL(UART_PAD_CTRL), +}; + +static iomux_v3_cfg_t const wdog_pads[] = { + IMX8MM_PAD_GPIO1_IO02_WDOG1_WDOG_B | MUX_PAD_CTRL(WDOG_PAD_CTRL), +}; + +int board_early_init_f(void) +{ + struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR; + + imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads)); + + set_wdog_reset(wdog); + + imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads)); + + return 0; +} + +/* + * Model specific PMIC adjustments necessary prior to DRAM init + * + * Note that we can not use pmic dm drivers here as we have a generic + * venice dt that does not have board-specific pmic's defined. + * + * Instead we must use dm_i2c. + */ +static int power_init_board(void) +{ + const char *model = gsc_get_model(); + struct udevice *bus; + struct udevice *dev; + int ret; + + if ((!strncmp(model, "GW71", 4)) || + (!strncmp(model, "GW72", 4)) || + (!strncmp(model, "GW73", 4))) { + ret = uclass_get_device_by_name(UCLASS_I2C, "i2c@30a20000", &bus); + if (ret) { + printf("PMIC : failed I2C1 probe: %d\n", ret); + return ret; + } + ret = dm_i2c_probe(bus, 0x69, 0, &dev); + if (ret) { + printf("PMIC : failed probe: %d\n", ret); + return ret; + } + puts("PMIC : MP5416\n"); + + /* set VDD_ARM SW3 to 0.92V for 1.6GHz */ + dm_i2c_reg_write(dev, MP5416_VSET_SW3, + BIT(7) | MP5416_VSET_SW3_SVAL(920000)); + } + + return 0; +} + +void board_init_f(ulong dummy) +{ + struct udevice *dev; + int ret; + int dram_sz; + + arch_cpu_init(); + + init_uart_clk(1); + + board_early_init_f(); + + timer_init(); + + preloader_console_init(); + + /* Clear the BSS. */ + memset(__bss_start, 0, __bss_end - __bss_start); + + ret = spl_early_init(); + if (ret) { + debug("spl_early_init() failed: %d\n", ret); + hang(); + } + + ret = uclass_get_device_by_name(UCLASS_CLK, + "clock-controller@30380000", + &dev); + if (ret < 0) { + printf("Failed to find clock node. Check device tree\n"); + hang(); + } + + enable_tzc380(); + + /* need to hold PCIe switch in reset otherwise it can lock i2c bus EEPROM is on */ + gpio_request(PCIE_RSTN, "perst#"); + gpio_direction_output(PCIE_RSTN, 0); + + /* GSC */ + dram_sz = gsc_init(0); + + /* PMIC */ + power_init_board(); + + /* DDR initialization */ + spl_dram_init(dram_sz); + + board_init_r(NULL, 0); +} + +/* determine prioritized order of boot devices to load U-Boot from */ +void board_boot_order(u32 *spl_boot_list) +{ + /* + * If the SPL was loaded via serial loader, we try to get + * U-Boot proper via USB SDP. + */ + if (spl_boot_device() == BOOT_DEVICE_BOARD) + spl_boot_list[0] = BOOT_DEVICE_BOARD; + + /* we have only eMMC in default venice dt */ + spl_boot_list[0] = BOOT_DEVICE_MMC1; +} + +/* return boot device based on where the SPL was loaded from */ +int spl_board_boot_device(enum boot_device boot_dev_spl) +{ + switch (boot_dev_spl) { + case USB_BOOT: + return BOOT_DEVICE_BOARD; + /* SDHC2 */ + case SD2_BOOT: + case MMC2_BOOT: + return BOOT_DEVICE_MMC1; + /* SDHC3 */ + case SD3_BOOT: + case MMC3_BOOT: + return BOOT_DEVICE_MMC2; + default: + return BOOT_DEVICE_NONE; + } +} |