diff options
author | Patrick Bruenn <p.bruenn@beckhoff.com> | 2016-11-04 11:57:02 +0100 |
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committer | Stefano Babic <sbabic@denx.de> | 2016-12-16 12:57:12 +0100 |
commit | 98d62e618bb9475eee799b7095803285ecf3a5ae (patch) | |
tree | 95bdb4d37f59a78b157bc557ffc7946483ee54d7 /board/beckhoff/mx53cx9020/mx53cx9020.c | |
parent | 8e1d92fdbc09a6a31bd2a6571d915b1c38307320 (diff) | |
download | u-boot-98d62e618bb9475eee799b7095803285ecf3a5ae.tar.gz |
arm: imx: add i.MX53 Beckhoff CX9020 Embedded PC
Add CX9020 board based on mx53loco.
Add simplified imx53 base device tree from kernel v4.8-rc8, to reuse
serial_mxc with DTE and prepare for device tree migration of other
functions and imx53 devices.
The CX9020 differs from i.MX53 Quick Start Board by:
- use uart2 instead of uart1
- DVI-D connector instead of VGA
- no audio
- CCAT FPGA connected to emi
- enable rtc
Signed-off-by: Patrick Bruenn <p.bruenn@beckhoff.com>
Diffstat (limited to 'board/beckhoff/mx53cx9020/mx53cx9020.c')
-rw-r--r-- | board/beckhoff/mx53cx9020/mx53cx9020.c | 367 |
1 files changed, 367 insertions, 0 deletions
diff --git a/board/beckhoff/mx53cx9020/mx53cx9020.c b/board/beckhoff/mx53cx9020/mx53cx9020.c new file mode 100644 index 0000000000..9b3ac22e70 --- /dev/null +++ b/board/beckhoff/mx53cx9020/mx53cx9020.c @@ -0,0 +1,367 @@ +/* + * Copyright (C) 2015 Beckhoff Automation GmbH & Co. KG + * Patrick Bruenn <p.bruenn@beckhoff.com> + * + * Based on <u-boot>/board/freescale/mx53loco/mx53loco.c + * Copyright (C) 2011 Freescale Semiconductor, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/imx-regs.h> +#include <asm/arch/sys_proto.h> +#include <asm/arch/crm_regs.h> +#include <asm/arch/clock.h> +#include <asm/arch/iomux-mx53.h> +#include <asm/arch/clock.h> +#include <asm/imx-common/mx5_video.h> +#include <ACEX1K.h> +#include <netdev.h> +#include <i2c.h> +#include <mmc.h> +#include <fsl_esdhc.h> +#include <asm/gpio.h> +#include <linux/fb.h> +#include <ipu_pixfmt.h> +#include <fs.h> +#include <dm/platdata.h> +#include <dm/platform_data/serial_mxc.h> + +enum LED_GPIOS { + GPIO_SD1_CD = IMX_GPIO_NR(1, 1), + GPIO_SD2_CD = IMX_GPIO_NR(1, 4), + GPIO_LED_SD2_R = IMX_GPIO_NR(3, 16), + GPIO_LED_SD2_B = IMX_GPIO_NR(3, 17), + GPIO_LED_SD2_G = IMX_GPIO_NR(3, 18), + GPIO_LED_SD1_R = IMX_GPIO_NR(3, 19), + GPIO_LED_SD1_B = IMX_GPIO_NR(3, 20), + GPIO_LED_SD1_G = IMX_GPIO_NR(3, 21), + GPIO_LED_PWR_R = IMX_GPIO_NR(3, 22), + GPIO_LED_PWR_B = IMX_GPIO_NR(3, 23), + GPIO_LED_PWR_G = IMX_GPIO_NR(3, 24), + GPIO_SUPS_INT = IMX_GPIO_NR(3, 31), + GPIO_C3_CONFIG = IMX_GPIO_NR(6, 8), + GPIO_C3_STATUS = IMX_GPIO_NR(6, 7), + GPIO_C3_DONE = IMX_GPIO_NR(6, 9), +}; + +#define CCAT_BASE_ADDR ((void *)0xf0000000) +#define CCAT_END_ADDR (CCAT_BASE_ADDR + (1024 * 1024 * 32)) +#define CCAT_SIZE 1191788 +#define CCAT_SIGN_ADDR (CCAT_BASE_ADDR + 12) +static const char CCAT_SIGNATURE[] = "CCAT"; + +static const u32 CCAT_MODE_CONFIG = 0x0024DC81; +static const u32 CCAT_MODE_RUN = 0x0033DC8F; + +DECLARE_GLOBAL_DATA_PTR; + +static uint32_t mx53_dram_size[2]; + +phys_size_t get_effective_memsize(void) +{ + /* + * WARNING: We must override get_effective_memsize() function here + * to report only the size of the first DRAM bank. This is to make + * U-Boot relocator place U-Boot into valid memory, that is, at the + * end of the first DRAM bank. If we did not override this function + * like so, U-Boot would be placed at the address of the first DRAM + * bank + total DRAM size - sizeof(uboot), which in the setup where + * each DRAM bank contains 512MiB of DRAM would result in placing + * U-Boot into invalid memory area close to the end of the first + * DRAM bank. + */ + return mx53_dram_size[0]; +} + +int dram_init(void) +{ + mx53_dram_size[0] = get_ram_size((void *)PHYS_SDRAM_1, 1 << 30); + mx53_dram_size[1] = get_ram_size((void *)PHYS_SDRAM_2, 1 << 30); + + gd->ram_size = mx53_dram_size[0] + mx53_dram_size[1]; + + return 0; +} + +void dram_init_banksize(void) +{ + gd->bd->bi_dram[0].start = PHYS_SDRAM_1; + gd->bd->bi_dram[0].size = mx53_dram_size[0]; + + gd->bd->bi_dram[1].start = PHYS_SDRAM_2; + gd->bd->bi_dram[1].size = mx53_dram_size[1]; +} + +u32 get_board_rev(void) +{ + struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE; + struct fuse_bank *bank = &iim->bank[0]; + struct fuse_bank0_regs *fuse = + (struct fuse_bank0_regs *)bank->fuse_regs; + + int rev = readl(&fuse->gp[6]); + + return (get_cpu_rev() & ~(0xF << 8)) | (rev & 0xF) << 8; +} + +/* + * Set CCAT mode + * @mode: use CCAT_MODE_CONFIG or CCAT_MODE_RUN + */ +void weim_cs0_settings(u32 mode) +{ + struct weim *weim_regs = (struct weim *)WEIM_BASE_ADDR; + + writel(0x0, &weim_regs->cs0gcr1); + writel(mode, &weim_regs->cs0gcr1); + writel(0x00001002, &weim_regs->cs0gcr2); + + writel(0x04000000, &weim_regs->cs0rcr1); + writel(0x00000000, &weim_regs->cs0rcr2); + + writel(0x04000000, &weim_regs->cs0wcr1); + writel(0x00000000, &weim_regs->cs0wcr2); +} + +static void setup_gpio_eim(void) +{ + gpio_direction_input(GPIO_C3_STATUS); + gpio_direction_input(GPIO_C3_DONE); + gpio_direction_output(GPIO_C3_CONFIG, 1); + + weim_cs0_settings(CCAT_MODE_RUN); +} + +static void setup_gpio_sups(void) +{ + gpio_direction_input(GPIO_SUPS_INT); + + static const int BLINK_INTERVALL = 50000; + int status = 1; + while (gpio_get_value(GPIO_SUPS_INT)) { + /* signal "CX SUPS power fail" */ + gpio_set_value(GPIO_LED_PWR_R, + (++status / BLINK_INTERVALL) % 2); + } + + /* signal "CX power up" */ + gpio_set_value(GPIO_LED_PWR_R, 1); +} + +static void setup_gpio_leds(void) +{ + gpio_direction_output(GPIO_LED_SD2_R, 0); + gpio_direction_output(GPIO_LED_SD2_B, 0); + gpio_direction_output(GPIO_LED_SD2_G, 0); + gpio_direction_output(GPIO_LED_SD1_R, 0); + gpio_direction_output(GPIO_LED_SD1_B, 0); + gpio_direction_output(GPIO_LED_SD1_G, 0); + gpio_direction_output(GPIO_LED_PWR_R, 0); + gpio_direction_output(GPIO_LED_PWR_B, 0); + gpio_direction_output(GPIO_LED_PWR_G, 0); +} + +#ifdef CONFIG_USB_EHCI_MX5 +int board_ehci_hcd_init(int port) +{ + /* request VBUS power enable pin, GPIO7_8 */ + gpio_direction_output(IMX_GPIO_NR(7, 8), 1); + return 0; +} +#endif + +#ifdef CONFIG_FSL_ESDHC +struct fsl_esdhc_cfg esdhc_cfg[2] = { + {MMC_SDHC1_BASE_ADDR}, + {MMC_SDHC2_BASE_ADDR}, +}; + +int board_mmc_getcd(struct mmc *mmc) +{ + struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv; + int ret; + + gpio_direction_input(GPIO_SD1_CD); + gpio_direction_input(GPIO_SD2_CD); + + if (cfg->esdhc_base == MMC_SDHC1_BASE_ADDR) + ret = !gpio_get_value(GPIO_SD1_CD); + else + ret = !gpio_get_value(GPIO_SD2_CD); + + return ret; +} + +int board_mmc_init(bd_t *bis) +{ + u32 index; + int ret; + + esdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK); + esdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK); + + for (index = 0; index < CONFIG_SYS_FSL_ESDHC_NUM; index++) { + switch (index) { + case 0: + break; + case 1: + break; + default: + printf("Warning: you configured more ESDHC controller(%d) as supported by the board(2)\n", + CONFIG_SYS_FSL_ESDHC_NUM); + return -EINVAL; + } + ret = fsl_esdhc_initialize(bis, &esdhc_cfg[index]); + if (ret) + return ret; + } + + return 0; +} +#endif + +static int power_init(void) +{ + /* nothing to do on CX9020 */ + return 0; +} + +static void clock_1GHz(void) +{ + int ret; + u32 ref_clk = MXC_HCLK; + /* + * After increasing voltage to 1.25V, we can switch + * CPU clock to 1GHz and DDR to 400MHz safely + */ + ret = mxc_set_clock(ref_clk, 1000, MXC_ARM_CLK); + if (ret) + printf("CPU: Switch CPU clock to 1GHZ failed\n"); + + ret = mxc_set_clock(ref_clk, 400, MXC_PERIPH_CLK); + ret |= mxc_set_clock(ref_clk, 400, MXC_DDR_CLK); + if (ret) + printf("CPU: Switch DDR clock to 400MHz failed\n"); +} + +int board_early_init_f(void) +{ + setup_gpio_leds(); + setup_gpio_sups(); + setup_gpio_eim(); + setup_iomux_lcd(); + + return 0; +} + +/* + * Do not overwrite the console + * Use always serial for U-Boot console + */ +int overwrite_console(void) +{ + return 1; +} + +int board_init(void) +{ + gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100; + + mxc_set_sata_internal_clock(); + + return 0; +} + +int checkboard(void) +{ + puts("Board: Beckhoff CX9020\n"); + + return 0; +} + +static int ccat_config_fn(int assert_config, int flush, int cookie) +{ + /* prepare FPGA for programming */ + weim_cs0_settings(CCAT_MODE_CONFIG); + gpio_set_value(GPIO_C3_CONFIG, 0); + udelay(1); + gpio_set_value(GPIO_C3_CONFIG, 1); + udelay(230); + + return FPGA_SUCCESS; +} + +static int ccat_status_fn(int cookie) +{ + return FPGA_FAIL; +} + +static int ccat_write_fn(const void *buf, size_t buf_len, int flush, int cookie) +{ + const uint8_t *const buffer = buf; + + /* program CCAT */ + int i; + for (i = 0; i < buf_len; ++i) + writeb(buffer[i], CCAT_BASE_ADDR); + + writeb(0xff, CCAT_BASE_ADDR); + writeb(0xff, CCAT_BASE_ADDR); + + return FPGA_SUCCESS; +} + +static int ccat_done_fn(int cookie) +{ + /* programming complete? */ + return gpio_get_value(GPIO_C3_DONE); +} + +static int ccat_post_fn(int cookie) +{ + /* switch to FPGA run mode */ + weim_cs0_settings(CCAT_MODE_RUN); + invalidate_dcache_range((ulong) CCAT_BASE_ADDR, (ulong) CCAT_END_ADDR); + + if (memcmp(CCAT_SIGN_ADDR, CCAT_SIGNATURE, sizeof(CCAT_SIGNATURE))) { + printf("Verifing CCAT firmware failed, signature not found\n"); + return FPGA_FAIL; + } + + /* signal "CX booting OS" */ + gpio_set_value(GPIO_LED_PWR_R, 1); + gpio_set_value(GPIO_LED_PWR_G, 1); + gpio_set_value(GPIO_LED_PWR_B, 0); + return FPGA_SUCCESS; +} + +static Altera_CYC2_Passive_Serial_fns ccat_fns = { + .config = ccat_config_fn, + .status = ccat_status_fn, + .done = ccat_done_fn, + .write = ccat_write_fn, + .abort = ccat_post_fn, + .post = ccat_post_fn, +}; + +static Altera_desc ccat_fpga = { + .family = Altera_CYC2, + .iface = passive_serial, + .size = CCAT_SIZE, + .iface_fns = &ccat_fns, + .base = CCAT_BASE_ADDR, +}; + +int board_late_init(void) +{ + if (!power_init()) + clock_1GHz(); + + fpga_init(); + fpga_add(fpga_altera, &ccat_fpga); + + return 0; +} |