diff options
Diffstat (limited to 'board/google/imx8mq_phanbell/spl.c')
| -rw-r--r-- | board/google/imx8mq_phanbell/spl.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/board/google/imx8mq_phanbell/spl.c b/board/google/imx8mq_phanbell/spl.c new file mode 100644 index 0000000000..b6afdfc913 --- /dev/null +++ b/board/google/imx8mq_phanbell/spl.c @@ -0,0 +1,180 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2020 NXP + * + */ + +#include <common.h> +#include <hang.h> +#include <asm/io.h> +#include <errno.h> +#include <asm/io.h> +#include <asm/arch/ddr.h> +#include <asm/arch/imx8mq_pins.h> +#include <asm/arch/sys_proto.h> +#include <asm/arch/clock.h> +#include <asm/mach-imx/iomux-v3.h> +#include <asm/mach-imx/gpio.h> +#include <asm/mach-imx/mxc_i2c.h> +#include <asm/sections.h> +#include <fsl_esdhc_imx.h> +#include <mmc.h> +#include <spl.h> + +DECLARE_GLOBAL_DATA_PTR; + +static void spl_dram_init(void) +{ + /* ddr init */ + ddr_init(&dram_timing); +} + +#define USDHC2_CD_GPIO IMX_GPIO_NR(2, 12) +#define USDHC1_PWR_GPIO IMX_GPIO_NR(2, 10) +#define USDHC2_PWR_GPIO IMX_GPIO_NR(2, 19) + +int board_mmc_getcd(struct mmc *mmc) +{ + struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv; + int ret = 0; + + switch (cfg->esdhc_base) { + case USDHC1_BASE_ADDR: + ret = 1; + break; + case USDHC2_BASE_ADDR: + ret = !gpio_get_value(USDHC2_CD_GPIO); + return ret; + } + + return 1; +} + +#define USDHC_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE | \ + PAD_CTL_FSEL2) +#define USDHC_GPIO_PAD_CTRL (PAD_CTL_PUE | PAD_CTL_DSE1) + +static iomux_v3_cfg_t const usdhc1_pads[] = { + IMX8MQ_PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_CMD__USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_DATA0__USDHC1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_DATA1__USDHC1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_DATA2__USDHC1_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_DATA3__USDHC1_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_DATA4__USDHC1_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_DATA5__USDHC1_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_DATA6__USDHC1_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_DATA7__USDHC1_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MQ_PAD_SD1_RESET_B__GPIO2_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL), +}; + +static iomux_v3_cfg_t const usdhc2_pads[] = { + IMX8MQ_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */ + IMX8MQ_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */ + IMX8MQ_PAD_SD2_DATA0__USDHC2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */ + IMX8MQ_PAD_SD2_DATA1__USDHC2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */ + IMX8MQ_PAD_SD2_DATA2__USDHC2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0x16 */ + IMX8MQ_PAD_SD2_DATA3__USDHC2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* 0xd6 */ + IMX8MQ_PAD_SD2_CD_B__GPIO2_IO12 | MUX_PAD_CTRL(USDHC_GPIO_PAD_CTRL), + IMX8MQ_PAD_SD2_RESET_B__GPIO2_IO19 | MUX_PAD_CTRL(USDHC_GPIO_PAD_CTRL), +}; + +static struct fsl_esdhc_cfg usdhc_cfg[2] = { + {USDHC1_BASE_ADDR}, + {USDHC2_BASE_ADDR}, +}; + +int board_mmc_init(bd_t *bis) +{ + int i, ret; + /* + * According to the board_mmc_init() the following map is done: + * (U-Boot device node) (Physical Port) + * mmc0 USDHC1 + * mmc1 USDHC2 + */ + for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) { + switch (i) { + case 0: + init_clk_usdhc(0); + usdhc_cfg[0].sdhc_clk = mxc_get_clock(USDHC1_CLK_ROOT); + usdhc_cfg[0].max_bus_width = 8; + imx_iomux_v3_setup_multiple_pads(usdhc1_pads, + ARRAY_SIZE(usdhc1_pads)); + gpio_request(USDHC1_PWR_GPIO, "usdhc1_reset"); + gpio_direction_output(USDHC1_PWR_GPIO, 0); + udelay(500); + gpio_direction_output(USDHC1_PWR_GPIO, 1); + break; + case 1: + init_clk_usdhc(1); + usdhc_cfg[1].sdhc_clk = mxc_get_clock(USDHC2_CLK_ROOT); + usdhc_cfg[1].max_bus_width = 4; + imx_iomux_v3_setup_multiple_pads(usdhc2_pads, + ARRAY_SIZE(usdhc2_pads)); + gpio_request(USDHC2_PWR_GPIO, "usdhc2_reset"); + gpio_direction_output(USDHC2_PWR_GPIO, 0); + udelay(500); + gpio_direction_output(USDHC2_PWR_GPIO, 1); + break; + default: + printf("Warning: you configured more USDHC controllers(%d) than supported by the board\n", i + 1); + return -EINVAL; + } + + ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]); + if (ret) + return ret; + } + + return 0; +} + +void spl_board_init(void) +{ + puts("Normal Boot\n"); +} + +#ifdef CONFIG_SPL_LOAD_FIT +int board_fit_config_name_match(const char *name) +{ + /* Just empty function now - can't decide what to choose */ + debug("%s: %s\n", __func__, name); + + return 0; +} +#endif + +void board_init_f(ulong dummy) +{ + int ret; + + /* Clear global data */ + memset((void *)gd, 0, sizeof(gd_t)); + + arch_cpu_init(); + + init_uart_clk(0); + + board_early_init_f(); + + timer_init(); + + preloader_console_init(); + + /* Clear the BSS. */ + memset(__bss_start, 0, __bss_end - __bss_start); + + ret = spl_init(); + if (ret) { + debug("spl_init() failed: %d\n", ret); + hang(); + } + + enable_tzc380(); + + /* DDR initialization */ + spl_dram_init(); + + board_init_r(NULL, 0); +} |