diff options
Diffstat (limited to 'roms/u-boot/board/liebherr/display5/spl.c')
| -rw-r--r-- | roms/u-boot/board/liebherr/display5/spl.c | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/roms/u-boot/board/liebherr/display5/spl.c b/roms/u-boot/board/liebherr/display5/spl.c new file mode 100644 index 000000000..39f70f578 --- /dev/null +++ b/roms/u-boot/board/liebherr/display5/spl.c @@ -0,0 +1,402 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2017 DENX Software Engineering + * Lukasz Majewski, DENX Software Engineering, lukma@denx.de + */ + +#include <common.h> +#include <cpu_func.h> +#include <env.h> +#include <image.h> +#include <init.h> +#include <log.h> +#include <serial.h> +#include <spl.h> +#include <asm/global_data.h> +#include <linux/delay.h> +#include <linux/libfdt.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/mx6-ddr.h> +#include <asm/arch/mx6-pins.h> +#include "asm/arch/crm_regs.h" +#include <asm/arch/sys_proto.h> +#include <asm/arch/imx-regs.h> +#include "asm/arch/iomux.h" +#include <asm/mach-imx/iomux-v3.h> +#include <asm/gpio.h> +#include <fsl_esdhc_imx.h> +#include <netdev.h> +#include <bootcount.h> +#include <watchdog.h> +#include "common.h" + +DECLARE_GLOBAL_DATA_PTR; + +static const struct mx6dq_iomux_ddr_regs mx6_ddr_ioregs = { + .dram_sdclk_0 = 0x00000030, + .dram_sdclk_1 = 0x00000030, + .dram_cas = 0x00000030, + .dram_ras = 0x00000030, + .dram_reset = 0x00000030, + .dram_sdcke0 = 0x00003000, + .dram_sdcke1 = 0x00003000, + .dram_sdba2 = 0x00000000, + .dram_sdodt0 = 0x00000030, + .dram_sdodt1 = 0x00000030, + + .dram_sdqs0 = 0x00000030, + .dram_sdqs1 = 0x00000030, + .dram_sdqs2 = 0x00000030, + .dram_sdqs3 = 0x00000030, + .dram_sdqs4 = 0x00000030, + .dram_sdqs5 = 0x00000030, + .dram_sdqs6 = 0x00000030, + .dram_sdqs7 = 0x00000030, + + .dram_dqm0 = 0x00000030, + .dram_dqm1 = 0x00000030, + .dram_dqm2 = 0x00000030, + .dram_dqm3 = 0x00000030, + .dram_dqm4 = 0x00000030, + .dram_dqm5 = 0x00000030, + .dram_dqm6 = 0x00000030, + .dram_dqm7 = 0x00000030, +}; + +static const struct mx6dq_iomux_grp_regs mx6_grp_ioregs = { + .grp_ddr_type = 0x000c0000, + .grp_ddrmode_ctl = 0x00020000, + .grp_ddrpke = 0x00000000, + .grp_addds = 0x00000030, + .grp_ctlds = 0x00000030, + .grp_ddrmode = 0x00020000, + .grp_b0ds = 0x00000030, + .grp_b1ds = 0x00000030, + .grp_b2ds = 0x00000030, + .grp_b3ds = 0x00000030, + .grp_b4ds = 0x00000030, + .grp_b5ds = 0x00000030, + .grp_b6ds = 0x00000030, + .grp_b7ds = 0x00000030, +}; + +/* 4x128Mx16.cfg */ +static const struct mx6_mmdc_calibration mx6_4x256mx16_mmdc_calib = { + .p0_mpwldectrl0 = 0x002D0028, + .p0_mpwldectrl1 = 0x0032002D, + .p1_mpwldectrl0 = 0x00210036, + .p1_mpwldectrl1 = 0x0019002E, + .p0_mpdgctrl0 = 0x4349035C, + .p0_mpdgctrl1 = 0x0348033D, + .p1_mpdgctrl0 = 0x43550362, + .p1_mpdgctrl1 = 0x03520316, + .p0_mprddlctl = 0x41393940, + .p1_mprddlctl = 0x3F3A3C47, + .p0_mpwrdlctl = 0x413A423A, + .p1_mpwrdlctl = 0x4042483E, +}; + +/* MT41K128M16JT-125 (2Gb density) */ +static const struct mx6_ddr3_cfg mt41k128m16jt_125 = { + .mem_speed = 1600, + .density = 2, + .width = 16, + .banks = 8, + .rowaddr = 14, + .coladdr = 10, + .pagesz = 2, + .trcd = 1375, + .trcmin = 4875, + .trasmin = 3500, +}; + +iomux_v3_cfg_t const uart_console_pads[] = { + /* UART5 */ + MX6_PAD_CSI0_DAT14__UART5_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL), + MX6_PAD_CSI0_DAT15__UART5_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL), + MX6_PAD_CSI0_DAT18__UART5_RTS_B | MUX_PAD_CTRL(UART_PAD_CTRL), + MX6_PAD_CSI0_DAT19__UART5_CTS_B | MUX_PAD_CTRL(UART_PAD_CTRL), +}; + +void displ5_set_iomux_uart_spl(void) +{ + SETUP_IOMUX_PADS(uart_console_pads); +} + +iomux_v3_cfg_t const misc_pads_spl[] = { + /* Emergency recovery pin */ + MX6_PAD_EIM_D29__GPIO3_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL), +}; + +void displ5_set_iomux_misc_spl(void) +{ + SETUP_IOMUX_PADS(misc_pads_spl); +} + +#ifdef CONFIG_MXC_SPI +iomux_v3_cfg_t const ecspi2_pads[] = { + /* SPI2, NOR Flash nWP, CS0 */ + MX6_PAD_CSI0_DAT10__ECSPI2_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL), + MX6_PAD_CSI0_DAT9__ECSPI2_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL), + MX6_PAD_CSI0_DAT8__ECSPI2_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL), + MX6_PAD_CSI0_DAT11__GPIO5_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL), + MX6_PAD_SD3_DAT5__GPIO7_IO00 | MUX_PAD_CTRL(NO_PAD_CTRL), +}; + +int board_spi_cs_gpio(unsigned int bus, unsigned int cs) +{ + if (bus != 1 || cs != 0) + return -EINVAL; + + return IMX_GPIO_NR(5, 29); +} + +void displ5_set_iomux_ecspi_spl(void) +{ + SETUP_IOMUX_PADS(ecspi2_pads); +} + +#else +void displ5_set_iomux_ecspi_spl(void) {} +#endif + +#ifdef CONFIG_FSL_ESDHC_IMX +iomux_v3_cfg_t const usdhc4_pads[] = { + MX6_PAD_SD4_CLK__SD4_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD4_CMD__SD4_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD4_DAT4__SD4_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD4_DAT5__SD4_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD4_DAT6__SD4_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD4_DAT7__SD4_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_NANDF_ALE__SD4_RESET | MUX_PAD_CTRL(USDHC_PAD_CTRL), +}; + +void displ5_set_iomux_usdhc_spl(void) +{ + SETUP_IOMUX_PADS(usdhc4_pads); +} + +#else +void displ5_set_iomux_usdhc_spl(void) {} +#endif + +static void ccgr_init(void) +{ + struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; + + writel(0x00C03F3F, &ccm->CCGR0); + writel(0x0030FC3F, &ccm->CCGR1); + writel(0x0FFFCFC0, &ccm->CCGR2); + writel(0x3FF00000, &ccm->CCGR3); + writel(0x00FFF300, &ccm->CCGR4); + writel(0x0F0000C3, &ccm->CCGR5); + writel(0x000003FF, &ccm->CCGR6); +} + +#ifdef CONFIG_MX6_DDRCAL +static void spl_dram_print_cal(struct mx6_ddr_sysinfo const *sysinfo) +{ + struct mx6_mmdc_calibration calibration = {0}; + + mmdc_read_calibration(sysinfo, &calibration); + + debug(".p0_mpdgctrl0\t= 0x%08X\n", calibration.p0_mpdgctrl0); + debug(".p0_mpdgctrl1\t= 0x%08X\n", calibration.p0_mpdgctrl1); + debug(".p0_mprddlctl\t= 0x%08X\n", calibration.p0_mprddlctl); + debug(".p0_mpwrdlctl\t= 0x%08X\n", calibration.p0_mpwrdlctl); + debug(".p0_mpwldectrl0\t= 0x%08X\n", calibration.p0_mpwldectrl0); + debug(".p0_mpwldectrl1\t= 0x%08X\n", calibration.p0_mpwldectrl1); + debug(".p1_mpdgctrl0\t= 0x%08X\n", calibration.p1_mpdgctrl0); + debug(".p1_mpdgctrl1\t= 0x%08X\n", calibration.p1_mpdgctrl1); + debug(".p1_mprddlctl\t= 0x%08X\n", calibration.p1_mprddlctl); + debug(".p1_mpwrdlctl\t= 0x%08X\n", calibration.p1_mpwrdlctl); + debug(".p1_mpwldectrl0\t= 0x%08X\n", calibration.p1_mpwldectrl0); + debug(".p1_mpwldectrl1\t= 0x%08X\n", calibration.p1_mpwldectrl1); +} + +static void spl_dram_perform_cal(struct mx6_ddr_sysinfo const *sysinfo) +{ + int ret; + + /* Perform DDR DRAM calibration */ + udelay(100); + ret = mmdc_do_write_level_calibration(sysinfo); + if (ret) { + printf("DDR: Write level calibration error [%d]\n", ret); + return; + } + + ret = mmdc_do_dqs_calibration(sysinfo); + if (ret) { + printf("DDR: DQS calibration error [%d]\n", ret); + return; + } + + spl_dram_print_cal(sysinfo); +} +#endif /* CONFIG_MX6_DDRCAL */ + +static void spl_dram_init(void) +{ + struct mx6_ddr_sysinfo sysinfo = { + /* width of data bus:0=16,1=32,2=64 */ + .dsize = 2, + /* config for full 4GB range so that get_mem_size() works */ + .cs_density = 32, /* 32Gb per CS */ + /* single chip select */ + .ncs = 1, + .cs1_mirror = 0, + .rtt_wr = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Wr = RZQ/4 */ + .rtt_nom = 2 /*DDR3_RTT_120_OHM*/, /* RTT_Nom = RZQ/2 */ + .walat = 1, /* Write additional latency */ + .ralat = 5, /* Read additional latency */ + .mif3_mode = 3, /* Command prediction working mode */ + .bi_on = 1, /* Bank interleaving enabled */ + .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */ + .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */ + .pd_fast_exit = 1, /* enable precharge power-down fast exit */ + .ddr_type = DDR_TYPE_DDR3, + .refsel = 1, /* Refresh cycles at 32KHz */ + .refr = 7, /* 8 refresh commands per refresh cycle */ + }; + + mx6dq_dram_iocfg(64, &mx6_ddr_ioregs, &mx6_grp_ioregs); + mx6_dram_cfg(&sysinfo, &mx6_4x256mx16_mmdc_calib, &mt41k128m16jt_125); + +#ifdef CONFIG_MX6_DDRCAL + spl_dram_perform_cal(&sysinfo); +#endif +} + +#ifdef CONFIG_SPL_SPI_SUPPORT +static void displ5_init_ecspi(void) +{ + displ5_set_iomux_ecspi_spl(); + enable_spi_clk(1, 1); +} +#else +static inline void displ5_init_ecspi(void) { } +#endif + +#ifdef CONFIG_SPL_MMC_SUPPORT +static struct fsl_esdhc_cfg usdhc_cfg = { + .esdhc_base = USDHC4_BASE_ADDR, + .max_bus_width = 8, +}; + +int board_mmc_init(struct bd_info *bd) +{ + displ5_set_iomux_usdhc_spl(); + + usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK); + gd->arch.sdhc_clk = usdhc_cfg.sdhc_clk; + + return fsl_esdhc_initialize(bd, &usdhc_cfg); +} +#endif + +void board_init_f(ulong dummy) +{ + ccgr_init(); + + arch_cpu_init(); + + gpr_init(); + + /* setup GP timer */ + timer_init(); + + displ5_set_iomux_uart_spl(); + + /* UART clocks enabled and gd valid - init serial console */ + preloader_console_init(); + + displ5_init_ecspi(); + + /* DDR initialization */ + spl_dram_init(); + + /* Clear the BSS. */ + memset(__bss_start, 0, __bss_end - __bss_start); + + displ5_set_iomux_misc_spl(); + + /* Initialize and reset WDT in SPL */ + hw_watchdog_init(); + WATCHDOG_RESET(); + + /* load/boot image from boot device */ + board_init_r(NULL, 0); +} + +#define EM_PAD IMX_GPIO_NR(3, 29) +int board_check_emergency_pad(void) +{ + int ret; + + ret = gpio_direction_input(EM_PAD); + if (ret) + return ret; + + return !gpio_get_value(EM_PAD); +} + +void board_boot_order(u32 *spl_boot_list) +{ + /* Default boot sequence SPI -> MMC */ + spl_boot_list[0] = spl_boot_device(); + spl_boot_list[1] = BOOT_DEVICE_MMC1; + spl_boot_list[2] = BOOT_DEVICE_UART; + spl_boot_list[3] = BOOT_DEVICE_NONE; + + /* + * In case of emergency PAD pressed, we always boot + * to proper u-boot and perform recovery tasks there. + */ + if (board_check_emergency_pad()) + return; + +#ifdef CONFIG_SPL_ENV_SUPPORT + /* 'fastboot' */ + const char *s; + + if (env_init() || env_load()) + return; + + s = env_get("BOOT_FROM"); + if (s && !bootcount_error() && strcmp(s, "ACTIVE") == 0) { + spl_boot_list[0] = BOOT_DEVICE_MMC1; + spl_boot_list[1] = spl_boot_device(); + } +#endif +} + +void reset_cpu(void) {} + +#ifdef CONFIG_SPL_LOAD_FIT +int board_fit_config_name_match(const char *name) +{ + return 0; +} +#endif + +#ifdef CONFIG_SPL_OS_BOOT +/* Return: 1 - boot to U-Boot. 0 - boot OS (falcon mode) */ +int spl_start_uboot(void) +{ + /* break into full u-boot on 'c' */ + if (serial_tstc() && serial_getc() == 'c') + return 1; + +#ifdef CONFIG_SPL_ENV_SUPPORT + if (env_get_yesno("boot_os") != 1) + return 1; +#endif + return 0; +} +#endif |