diff options
Diffstat (limited to 'arch/arm/cpu/armv7/am33xx/board.c')
| -rw-r--r-- | arch/arm/cpu/armv7/am33xx/board.c | 224 |
1 files changed, 202 insertions, 22 deletions
diff --git a/arch/arm/cpu/armv7/am33xx/board.c b/arch/arm/cpu/armv7/am33xx/board.c index 71309a7f4..ecc26717c 100644 --- a/arch/arm/cpu/armv7/am33xx/board.c +++ b/arch/arm/cpu/armv7/am33xx/board.c @@ -17,22 +17,100 @@ */ #include <common.h> +#include <errno.h> #include <asm/arch/cpu.h> #include <asm/arch/hardware.h> #include <asm/arch/omap.h> #include <asm/arch/ddr_defs.h> #include <asm/arch/clock.h> +#include <asm/arch/gpio.h> #include <asm/arch/mmc_host_def.h> -#include <asm/arch/common_def.h> +#include <asm/arch/sys_proto.h> #include <asm/io.h> #include <asm/omap_common.h> +#include <asm/emif.h> +#include <asm/gpio.h> +#include <i2c.h> +#include <miiphy.h> +#include <cpsw.h> DECLARE_GLOBAL_DATA_PTR; struct wd_timer *wdtimer = (struct wd_timer *)WDT_BASE; -struct gptimer *timer_base = (struct gptimer *)CONFIG_SYS_TIMERBASE; struct uart_sys *uart_base = (struct uart_sys *)DEFAULT_UART_BASE; +static const struct gpio_bank gpio_bank_am33xx[4] = { + { (void *)AM33XX_GPIO0_BASE, METHOD_GPIO_24XX }, + { (void *)AM33XX_GPIO1_BASE, METHOD_GPIO_24XX }, + { (void *)AM33XX_GPIO2_BASE, METHOD_GPIO_24XX }, + { (void *)AM33XX_GPIO3_BASE, METHOD_GPIO_24XX }, +}; + +const struct gpio_bank *const omap_gpio_bank = gpio_bank_am33xx; + +/* MII mode defines */ +#define MII_MODE_ENABLE 0x0 +#define RGMII_MODE_ENABLE 0xA + +/* GPIO that controls power to DDR on EVM-SK */ +#define GPIO_DDR_VTT_EN 7 + +static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE; + +static struct am335x_baseboard_id __attribute__((section (".data"))) header; + +static inline int board_is_bone(void) +{ + return !strncmp(header.name, "A335BONE", HDR_NAME_LEN); +} + +static inline int board_is_evm_sk(void) +{ + return !strncmp("A335X_SK", header.name, HDR_NAME_LEN); +} + +/* + * Read header information from EEPROM into global structure. + */ +static int read_eeprom(void) +{ + /* Check if baseboard eeprom is available */ + if (i2c_probe(CONFIG_SYS_I2C_EEPROM_ADDR)) { + puts("Could not probe the EEPROM; something fundamentally " + "wrong on the I2C bus.\n"); + return -ENODEV; + } + + /* read the eeprom using i2c */ + if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 2, (uchar *)&header, + sizeof(header))) { + puts("Could not read the EEPROM; something fundamentally" + " wrong on the I2C bus.\n"); + return -EIO; + } + + if (header.magic != 0xEE3355AA) { + /* + * read the eeprom using i2c again, + * but use only a 1 byte address + */ + if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 1, + (uchar *)&header, sizeof(header))) { + puts("Could not read the EEPROM; something " + "fundamentally wrong on the I2C bus.\n"); + return -EIO; + } + + if (header.magic != 0xEE3355AA) { + printf("Incorrect magic number (0x%x) in EEPROM\n", + header.magic); + return -EINVAL; + } + } + + return 0; +} + /* UART Defines */ #ifdef CONFIG_SPL_BUILD #define UART_RESET (0x1 << 1) @@ -40,21 +118,17 @@ struct uart_sys *uart_base = (struct uart_sys *)DEFAULT_UART_BASE; #define UART_SMART_IDLE_EN (0x1 << 0x3) #endif -#ifdef CONFIG_SPL_BUILD -/* Initialize timer */ -static void init_timer(void) +/* + * Determine what type of DDR we have. + */ +static short inline board_memory_type(void) { - /* Reset the Timer */ - writel(0x2, (&timer_base->tscir)); + /* The following boards are known to use DDR3. */ + if (board_is_evm_sk()) + return EMIF_REG_SDRAM_TYPE_DDR3; - /* Wait until the reset is done */ - while (readl(&timer_base->tiocp_cfg) & 1) - ; - - /* Start the Timer */ - writel(0x1, (&timer_base->tclr)); + return EMIF_REG_SDRAM_TYPE_DDR2; } -#endif /* * early system init of muxing and clocks. @@ -92,22 +166,38 @@ void s_init(void) regVal |= UART_SMART_IDLE_EN; writel(regVal, &uart_base->uartsyscfg); - /* Initialize the Timer */ - init_timer(); - preloader_console_init(); - config_ddr(); -#endif + /* Initalize the board header */ + enable_i2c0_pin_mux(); + i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); + if (read_eeprom() < 0) + puts("Could not get board ID.\n"); - /* Enable MMC0 */ - enable_mmc0_pin_mux(); + enable_board_pin_mux(&header); + if (board_is_evm_sk()) { + /* + * EVM SK 1.2A and later use gpio0_7 to enable DDR3. + * This is safe enough to do on older revs. + */ + gpio_request(GPIO_DDR_VTT_EN, "ddr_vtt_en"); + gpio_direction_output(GPIO_DDR_VTT_EN, 1); + } + + config_ddr(board_memory_type()); +#endif } #if defined(CONFIG_OMAP_HSMMC) && !defined(CONFIG_SPL_BUILD) int board_mmc_init(bd_t *bis) { - return omap_mmc_init(0, 0, 0); + int ret; + + ret = omap_mmc_init(0, 0, 0); + if (ret) + return ret; + + return omap_mmc_init(1, 0, 0); } #endif @@ -116,3 +206,93 @@ void setup_clocks_for_console(void) /* Not yet implemented */ return; } + +/* + * Basic board specific setup. Pinmux has been handled already. + */ +int board_init(void) +{ + i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); + if (read_eeprom() < 0) + puts("Could not get board ID.\n"); + + gd->bd->bi_boot_params = PHYS_DRAM_1 + 0x100; + + return 0; +} + +#ifdef CONFIG_DRIVER_TI_CPSW +static void cpsw_control(int enabled) +{ + /* VTP can be added here */ + + return; +} + +static struct cpsw_slave_data cpsw_slaves[] = { + { + .slave_reg_ofs = 0x208, + .sliver_reg_ofs = 0xd80, + .phy_id = 0, + }, + { + .slave_reg_ofs = 0x308, + .sliver_reg_ofs = 0xdc0, + .phy_id = 1, + }, +}; + +static struct cpsw_platform_data cpsw_data = { + .mdio_base = AM335X_CPSW_MDIO_BASE, + .cpsw_base = AM335X_CPSW_BASE, + .mdio_div = 0xff, + .channels = 8, + .cpdma_reg_ofs = 0x800, + .slaves = 1, + .slave_data = cpsw_slaves, + .ale_reg_ofs = 0xd00, + .ale_entries = 1024, + .host_port_reg_ofs = 0x108, + .hw_stats_reg_ofs = 0x900, + .mac_control = (1 << 5), + .control = cpsw_control, + .host_port_num = 0, + .version = CPSW_CTRL_VERSION_2, +}; + +int board_eth_init(bd_t *bis) +{ + uint8_t mac_addr[6]; + uint32_t mac_hi, mac_lo; + + if (!eth_getenv_enetaddr("ethaddr", mac_addr)) { + debug("<ethaddr> not set. Reading from E-fuse\n"); + /* try reading mac address from efuse */ + mac_lo = readl(&cdev->macid0l); + mac_hi = readl(&cdev->macid0h); + mac_addr[0] = mac_hi & 0xFF; + mac_addr[1] = (mac_hi & 0xFF00) >> 8; + mac_addr[2] = (mac_hi & 0xFF0000) >> 16; + mac_addr[3] = (mac_hi & 0xFF000000) >> 24; + mac_addr[4] = mac_lo & 0xFF; + mac_addr[5] = (mac_lo & 0xFF00) >> 8; + + if (is_valid_ether_addr(mac_addr)) + eth_setenv_enetaddr("ethaddr", mac_addr); + else + return -1; + } + + if (board_is_bone()) { + writel(MII_MODE_ENABLE, &cdev->miisel); + cpsw_slaves[0].phy_if = cpsw_slaves[1].phy_if = + PHY_INTERFACE_MODE_MII; + } else { + writel(RGMII_MODE_ENABLE, &cdev->miisel); + cpsw_slaves[0].phy_if = cpsw_slaves[1].phy_if = + PHY_INTERFACE_MODE_RGMII; + } + + return cpsw_register(&cpsw_data); +} +#endif |