diff options
Diffstat (limited to 'roms/u-boot/board/variscite/dart_6ul/dart_6ul.c')
-rw-r--r-- | roms/u-boot/board/variscite/dart_6ul/dart_6ul.c | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/roms/u-boot/board/variscite/dart_6ul/dart_6ul.c b/roms/u-boot/board/variscite/dart_6ul/dart_6ul.c new file mode 100644 index 000000000..7326daa17 --- /dev/null +++ b/roms/u-boot/board/variscite/dart_6ul/dart_6ul.c @@ -0,0 +1,263 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2015-2019 Variscite Ltd. + * Copyright (C) 2019 Parthiban Nallathambi <parthitce@gmail.com> + * Copyright (C) 2021 Marc Ferland, Amotus Solutions Inc., <ferlandm@amotus.ca> + */ + +#include <init.h> +#include <net.h> +#include <asm/arch/clock.h> +#include <asm/arch/crm_regs.h> +#include <asm/arch/mx6-pins.h> +#include <asm/arch/sys_proto.h> +#include <asm/global_data.h> +#include <asm/mach-imx/iomux-v3.h> +#include <asm/mach-imx/mxc_i2c.h> +#include <dm.h> +#include <fsl_esdhc_imx.h> +#include <i2c_eeprom.h> +#include <linux/bitops.h> +#include <malloc.h> +#include <miiphy.h> + +DECLARE_GLOBAL_DATA_PTR; + +int dram_init(void) +{ + gd->ram_size = imx_ddr_size(); + + return 0; +} + +#ifdef CONFIG_NAND_MXS +#define GPMI_PAD_CTRL0 (PAD_CTL_PKE | PAD_CTL_PUE | PAD_CTL_PUS_100K_UP) +#define GPMI_PAD_CTRL1 (PAD_CTL_DSE_40ohm | PAD_CTL_SPEED_MED | \ + PAD_CTL_SRE_FAST) +#define GPMI_PAD_CTRL2 (GPMI_PAD_CTRL0 | GPMI_PAD_CTRL1) +static iomux_v3_cfg_t const nand_pads[] = { + MX6_PAD_NAND_DATA00__RAWNAND_DATA00 | MUX_PAD_CTRL(GPMI_PAD_CTRL2), + MX6_PAD_NAND_DATA01__RAWNAND_DATA01 | MUX_PAD_CTRL(GPMI_PAD_CTRL2), + MX6_PAD_NAND_DATA02__RAWNAND_DATA02 | MUX_PAD_CTRL(GPMI_PAD_CTRL2), + MX6_PAD_NAND_DATA03__RAWNAND_DATA03 | MUX_PAD_CTRL(GPMI_PAD_CTRL2), + MX6_PAD_NAND_DATA04__RAWNAND_DATA04 | MUX_PAD_CTRL(GPMI_PAD_CTRL2), + MX6_PAD_NAND_DATA05__RAWNAND_DATA05 | MUX_PAD_CTRL(GPMI_PAD_CTRL2), + MX6_PAD_NAND_DATA06__RAWNAND_DATA06 | MUX_PAD_CTRL(GPMI_PAD_CTRL2), + MX6_PAD_NAND_DATA07__RAWNAND_DATA07 | MUX_PAD_CTRL(GPMI_PAD_CTRL2), + MX6_PAD_NAND_CLE__RAWNAND_CLE | MUX_PAD_CTRL(GPMI_PAD_CTRL2), + MX6_PAD_NAND_ALE__RAWNAND_ALE | MUX_PAD_CTRL(GPMI_PAD_CTRL2), + MX6_PAD_NAND_CE0_B__RAWNAND_CE0_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2), + MX6_PAD_NAND_RE_B__RAWNAND_RE_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2), + MX6_PAD_NAND_WE_B__RAWNAND_WE_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2), + MX6_PAD_NAND_WP_B__RAWNAND_WP_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2), + MX6_PAD_NAND_READY_B__RAWNAND_READY_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2), + MX6_PAD_NAND_DQS__RAWNAND_DQS | MUX_PAD_CTRL(GPMI_PAD_CTRL2), +}; + +static void setup_gpmi_nand(void) +{ + struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; + + /* config gpmi nand iomux */ + imx_iomux_v3_setup_multiple_pads(nand_pads, ARRAY_SIZE(nand_pads)); + + clrbits_le32(&mxc_ccm->CCGR4, + MXC_CCM_CCGR4_RAWNAND_U_BCH_INPUT_APB_MASK | + MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_BCH_MASK | + MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK | + MXC_CCM_CCGR4_RAWNAND_U_GPMI_INPUT_APB_MASK | + MXC_CCM_CCGR4_PL301_MX6QPER1_BCH_MASK); + + /* + * config gpmi and bch clock to 100 MHz + * bch/gpmi select PLL2 PFD2 400M + * 100M = 400M / 4 + */ + clrbits_le32(&mxc_ccm->cscmr1, + MXC_CCM_CSCMR1_BCH_CLK_SEL | + MXC_CCM_CSCMR1_GPMI_CLK_SEL); + clrsetbits_le32(&mxc_ccm->cscdr1, + MXC_CCM_CSCDR1_BCH_PODF_MASK | + MXC_CCM_CSCDR1_GPMI_PODF_MASK, + (3 << MXC_CCM_CSCDR1_BCH_PODF_OFFSET) | + (3 << MXC_CCM_CSCDR1_GPMI_PODF_OFFSET)); + + /* enable gpmi and bch clock gating */ + setbits_le32(&mxc_ccm->CCGR4, + MXC_CCM_CCGR4_RAWNAND_U_BCH_INPUT_APB_MASK | + MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_BCH_MASK | + MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK | + MXC_CCM_CCGR4_RAWNAND_U_GPMI_INPUT_APB_MASK | + MXC_CCM_CCGR4_PL301_MX6QPER1_BCH_MASK); + + /* enable apbh clock gating */ + setbits_le32(&mxc_ccm->CCGR0, MXC_CCM_CCGR0_APBHDMA_MASK); +} +#endif + +#ifdef CONFIG_FEC_MXC +static int setup_fec(int fec_id) +{ + struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR; + int ret; + + if (fec_id == 0) { + /* + * Use 50M anatop loopback REF_CLK1 for ENET1, + * clear gpr1[13], set gpr1[17]. + */ + clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC1_MASK, + IOMUX_GPR1_FEC1_CLOCK_MUX1_SEL_MASK); + } else { + /* + * Use 50M anatop loopback REF_CLK2 for ENET2, + * clear gpr1[14], set gpr1[18]. + */ + clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC2_MASK, + IOMUX_GPR1_FEC2_CLOCK_MUX1_SEL_MASK); + } + + ret = enable_fec_anatop_clock(fec_id, ENET_50MHZ); + if (ret) + return ret; + + enable_enet_clk(1); + + return 0; +} + +int board_phy_config(struct phy_device *phydev) +{ + /* + * Defaults + Enable status LEDs (LED1: Activity, LED0: Link) & select + * 50 MHz RMII clock mode. + */ + phy_write(phydev, MDIO_DEVAD_NONE, 0x1f, 0x8190); + + if (phydev->drv->config) + phydev->drv->config(phydev); + + return 0; +} +#endif /* CONFIG_FEC_MXC */ + +int board_init(void) +{ + /* Address of boot parameters */ + gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; + +#ifdef CONFIG_FEC_MXC + setup_fec(CONFIG_FEC_ENET_DEV); +#endif + +#ifdef CONFIG_NAND_MXS + setup_gpmi_nand(); +#endif + return 0; +} + +/* length of strings stored in the eeprom */ +#define DART6UL_PN_LEN 16 +#define DART6UL_ASSY_LEN 16 +#define DART6UL_DATE_LEN 12 + +/* eeprom content, 512 bytes */ +struct dart6ul_info { + u32 magic; + u8 partnumber[DART6UL_PN_LEN]; + u8 assy[DART6UL_ASSY_LEN]; + u8 date[DART6UL_DATE_LEN]; + u32 custom_addr_val[32]; + struct cmd { + u8 addr; + u8 index; + } custom_cmd[150]; + u8 res[33]; + u8 som_info; + u8 ddr_size; + u8 crc; +} __attribute__ ((__packed__)); + +#define DART6UL_INFO_STORAGE_GET(n) ((n) & 0x3) +#define DART6UL_INFO_WIFI_GET(n) ((n) >> 2 & 0x1) +#define DART6UL_INFO_REV_GET(n) ((n) >> 3 & 0x3) +#define DART6UL_DDRSIZE(n) ((n) * SZ_128M) +#define DART6UL_INFO_MAGIC 0x32524156 + +static const char *som_info_storage_to_str(u8 som_info) +{ + switch (DART6UL_INFO_STORAGE_GET(som_info)) { + case 0x0: return "none (SD only)"; + case 0x1: return "NAND"; + case 0x2: return "eMMC"; + default: return "unknown"; + } +} + +static const char *som_info_rev_to_str(u8 som_info) +{ + switch (DART6UL_INFO_REV_GET(som_info)) { + case 0x0: return "2.4G"; + case 0x1: return "5G"; + default: return "unknown"; + } +} + +int checkboard(void) +{ + const char *path = "eeprom0"; + struct dart6ul_info *info; + struct udevice *dev; + int ret, off; + + off = fdt_path_offset(gd->fdt_blob, path); + if (off < 0) { + printf("%s: fdt_path_offset() failed: %d\n", __func__, off); + return off; + } + + ret = uclass_get_device_by_of_offset(UCLASS_I2C_EEPROM, off, &dev); + if (ret) { + printf("%s: uclass_get_device_by_of_offset() failed: %d\n", __func__, ret); + return ret; + } + + info = malloc(sizeof(struct dart6ul_info)); + if (!info) + return -ENOMEM; + + ret = i2c_eeprom_read(dev, 0, (uint8_t *)info, + sizeof(struct dart6ul_info)); + if (ret) { + printf("%s: i2c_eeprom_read() failed: %d\n", __func__, ret); + free(info); + return ret; + } + + if (info->magic != DART6UL_INFO_MAGIC) { + printf("Board: Invalid board info magic: 0x%08x, expected 0x%08x\n", + info->magic, DART6UL_INFO_MAGIC); + /* do not fail if the content is invalid */ + free(info); + return 0; + } + + /* make sure strings are null terminated */ + info->partnumber[DART6UL_PN_LEN - 1] = '\0'; + info->assy[DART6UL_ASSY_LEN - 1] = '\0'; + info->date[DART6UL_DATE_LEN - 1] = '\0'; + + printf("Board: PN: %s, Assy: %s, Date: %s\n" + " Storage: %s, Wifi: %s, DDR: %d MiB, Rev: %s\n", + info->partnumber, + info->assy, + info->date, + som_info_storage_to_str(info->som_info), + DART6UL_INFO_WIFI_GET(info->som_info) ? "yes" : "no", + DART6UL_DDRSIZE(info->ddr_size) / SZ_1M, + som_info_rev_to_str(info->som_info)); + + free(info); + + return 0; +} |