X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=board%2Fdavinci%2Fda8xxevm%2Fda850evm.c;h=11ea52f24048d743a0e09fe58e08e7635f329c65;hb=235c5b8315c6a9eb566fd3d99a098cc6db869fc5;hp=0eb9e29ea35e2a3b8347bdca391a4b304a41cdab;hpb=a3f88293ddd13facd734769c1664d35ab4ed681f;p=platform%2Fkernel%2Fu-boot.git diff --git a/board/davinci/da8xxevm/da850evm.c b/board/davinci/da8xxevm/da850evm.c index 0eb9e29..11ea52f 100644 --- a/board/davinci/da8xxevm/da850evm.c +++ b/board/davinci/da8xxevm/da850evm.c @@ -6,112 +6,338 @@ * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. * Copyright (C) 2007 Sergey Kubushyn * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * SPDX-License-Identifier: GPL-2.0+ */ #include #include +#include +#include +#include +#include #include -#include +#include +#include +#include #include -#include "../common/misc.h" -#include "common.h" +#include +#include +#include +#include + +#ifdef CONFIG_MMC_DAVINCI +#include +#include +#endif DECLARE_GLOBAL_DATA_PTR; -#define pinmux(x) (&davinci_syscfg_regs->pinmux[x]) +#ifdef CONFIG_DRIVER_TI_EMAC +#ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII +#define HAS_RMII 1 +#else +#define HAS_RMII 0 +#endif +#endif /* CONFIG_DRIVER_TI_EMAC */ -/* SPI0 pin muxer settings */ -static const struct pinmux_config spi1_pins[] = { - { pinmux(5), 1, 1 }, - { pinmux(5), 1, 2 }, - { pinmux(5), 1, 4 }, - { pinmux(5), 1, 5 } -}; +#define CFG_MAC_ADDR_SPI_BUS 0 +#define CFG_MAC_ADDR_SPI_CS 0 +#define CFG_MAC_ADDR_SPI_MAX_HZ CONFIG_SF_DEFAULT_SPEED +#define CFG_MAC_ADDR_SPI_MODE SPI_MODE_3 -/* UART pin muxer settings */ -static const struct pinmux_config uart_pins[] = { - { pinmux(0), 4, 6 }, - { pinmux(0), 4, 7 }, - { pinmux(4), 2, 4 }, - { pinmux(4), 2, 5 } -}; +#define CFG_MAC_ADDR_OFFSET (flash->size - SZ_64K) -/* I2C pin muxer settings */ -static const struct pinmux_config i2c_pins[] = { - { pinmux(4), 2, 2 }, - { pinmux(4), 2, 3 } -}; +#ifdef CONFIG_MAC_ADDR_IN_SPIFLASH +static int get_mac_addr(u8 *addr) +{ + struct spi_flash *flash; + int ret; -#ifdef CONFIG_NAND_DAVINCI -const struct pinmux_config nand_pins[] = { - { pinmux(7), 1, 1 }, - { pinmux(7), 1, 2 }, - { pinmux(7), 1, 4 }, - { pinmux(7), 1, 5 }, - { pinmux(9), 1, 0 }, - { pinmux(9), 1, 1 }, - { pinmux(9), 1, 2 }, - { pinmux(9), 1, 3 }, - { pinmux(9), 1, 4 }, - { pinmux(9), 1, 5 }, - { pinmux(9), 1, 6 }, - { pinmux(9), 1, 7 }, - { pinmux(12), 1, 5 }, - { pinmux(12), 1, 6 } + flash = spi_flash_probe(CFG_MAC_ADDR_SPI_BUS, CFG_MAC_ADDR_SPI_CS, + CFG_MAC_ADDR_SPI_MAX_HZ, CFG_MAC_ADDR_SPI_MODE); + if (!flash) { + printf("Error - unable to probe SPI flash.\n"); + return -1; + } + + ret = spi_flash_read(flash, CFG_MAC_ADDR_OFFSET, 6, addr); + if (ret) { + printf("Error - unable to read MAC address from SPI flash.\n"); + return -1; + } + + return ret; +} +#endif + +void dsp_lpsc_on(unsigned domain, unsigned int id) +{ + dv_reg_p mdstat, mdctl, ptstat, ptcmd; + struct davinci_psc_regs *psc_regs; + + psc_regs = davinci_psc0_regs; + mdstat = &psc_regs->psc0.mdstat[id]; + mdctl = &psc_regs->psc0.mdctl[id]; + ptstat = &psc_regs->ptstat; + ptcmd = &psc_regs->ptcmd; + + while (*ptstat & (0x1 << domain)) + ; + + if ((*mdstat & 0x1f) == 0x03) + return; /* Already on and enabled */ + + *mdctl |= 0x03; + + *ptcmd = 0x1 << domain; + + while (*ptstat & (0x1 << domain)) + ; + while ((*mdstat & 0x1f) != 0x03) + ; /* Probably an overkill... */ +} + +static void dspwake(void) +{ + unsigned *resetvect = (unsigned *)DAVINCI_L3CBARAM_BASE; + u32 val; + + /* if the device is ARM only, return */ + if ((readl(CHIP_REV_ID_REG) & 0x3f) == 0x10) + return; + + if (hwconfig_subarg_cmp_f("dsp", "wake", "no", NULL)) + return; + + *resetvect++ = 0x1E000; /* DSP Idle */ + /* clear out the next 10 words as NOP */ + memset(resetvect, 0, sizeof(unsigned) *10); + + /* setup the DSP reset vector */ + writel(DAVINCI_L3CBARAM_BASE, HOST1CFG); + + dsp_lpsc_on(1, DAVINCI_LPSC_GEM); + val = readl(PSC0_MDCTL + (15 * 4)); + val |= 0x100; + writel(val, (PSC0_MDCTL + (15 * 4))); +} + +int misc_init_r(void) +{ + dspwake(); + +#if defined(CONFIG_MAC_ADDR_IN_SPIFLASH) || defined(CONFIG_MAC_ADDR_IN_EEPROM) + + uchar env_enetaddr[6]; + int enetaddr_found; + + enetaddr_found = eth_getenv_enetaddr("ethaddr", env_enetaddr); + +#ifdef CONFIG_MAC_ADDR_IN_SPIFLASH + int spi_mac_read; + uchar buff[6]; + + spi_mac_read = get_mac_addr(buff); + + /* + * MAC address not present in the environment + * try and read the MAC address from SPI flash + * and set it. + */ + if (!enetaddr_found) { + if (!spi_mac_read) { + if (is_valid_ethaddr(buff)) { + if (eth_setenv_enetaddr("ethaddr", buff)) { + printf("Warning: Failed to " + "set MAC address from SPI flash\n"); + } + } else { + printf("Warning: Invalid " + "MAC address read from SPI flash\n"); + } + } + } else { + /* + * MAC address present in environment compare it with + * the MAC address in SPI flash and warn on mismatch + */ + if (!spi_mac_read && is_valid_ethaddr(buff) && + memcmp(env_enetaddr, buff, 6)) + printf("Warning: MAC address in SPI flash don't match " + "with the MAC address in the environment\n"); + printf("Default using MAC address from environment\n"); + } +#endif + uint8_t enetaddr[8]; + int eeprom_mac_read; + + /* Read Ethernet MAC address from EEPROM */ + eeprom_mac_read = dvevm_read_mac_address(enetaddr); + + /* + * MAC address not present in the environment + * try and read the MAC address from EEPROM flash + * and set it. + */ + if (!enetaddr_found) { + if (eeprom_mac_read) + /* Set Ethernet MAC address from EEPROM */ + davinci_sync_env_enetaddr(enetaddr); + } else { + /* + * MAC address present in environment compare it with + * the MAC address in EEPROM and warn on mismatch + */ + if (eeprom_mac_read && memcmp(enetaddr, env_enetaddr, 6)) + printf("Warning: MAC address in EEPROM don't match " + "with the MAC address in the environment\n"); + printf("Default using MAC address from environment\n"); + } + +#endif + return 0; +} + +#ifdef CONFIG_MMC_DAVINCI +static struct davinci_mmc mmc_sd0 = { + .reg_base = (struct davinci_mmc_regs *)DAVINCI_MMC_SD0_BASE, + .host_caps = MMC_MODE_4BIT, /* DA850 supports only 4-bit SD/MMC */ + .voltages = MMC_VDD_32_33 | MMC_VDD_33_34, + .version = MMC_CTLR_VERSION_2, }; + +int board_mmc_init(bd_t *bis) +{ + mmc_sd0.input_clk = clk_get(DAVINCI_MMCSD_CLKID); + + /* Add slot-0 to mmc subsystem */ + return davinci_mmc_init(bis, &mmc_sd0); +} #endif -static const struct pinmux_resource pinmuxes[] = { +static const struct pinmux_config gpio_pins[] = { +#ifdef CONFIG_USE_NOR + /* GP0[11] is required for NOR to work on Rev 3 EVMs */ + { pinmux(0), 8, 4 }, /* GP0[11] */ +#endif +#ifdef CONFIG_MMC_DAVINCI + /* GP0[11] is required for SD to work on Rev 3 EVMs */ + { pinmux(0), 8, 4 }, /* GP0[11] */ +#endif +}; + +const struct pinmux_resource pinmuxes[] = { +#ifdef CONFIG_DRIVER_TI_EMAC + PINMUX_ITEM(emac_pins_mdio), +#ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII + PINMUX_ITEM(emac_pins_rmii), +#else + PINMUX_ITEM(emac_pins_mii), +#endif +#endif #ifdef CONFIG_SPI_FLASH - PINMUX_ITEM(spi1_pins), + PINMUX_ITEM(spi1_pins_base), + PINMUX_ITEM(spi1_pins_scs0), #endif - PINMUX_ITEM(uart_pins), - PINMUX_ITEM(i2c_pins), + PINMUX_ITEM(uart2_pins_txrx), + PINMUX_ITEM(uart2_pins_rtscts), + PINMUX_ITEM(i2c0_pins), #ifdef CONFIG_NAND_DAVINCI - PINMUX_ITEM(nand_pins), + PINMUX_ITEM(emifa_pins_cs3), + PINMUX_ITEM(emifa_pins_cs4), + PINMUX_ITEM(emifa_pins_nand), +#elif defined(CONFIG_USE_NOR) + PINMUX_ITEM(emifa_pins_cs2), + PINMUX_ITEM(emifa_pins_nor), +#endif + PINMUX_ITEM(gpio_pins), +#ifdef CONFIG_MMC_DAVINCI + PINMUX_ITEM(mmc0_pins), #endif }; -static const struct lpsc_resource lpsc[] = { +const int pinmuxes_size = ARRAY_SIZE(pinmuxes); + +const struct lpsc_resource lpsc[] = { { DAVINCI_LPSC_AEMIF }, /* NAND, NOR */ { DAVINCI_LPSC_SPI1 }, /* Serial Flash */ { DAVINCI_LPSC_EMAC }, /* image download */ { DAVINCI_LPSC_UART2 }, /* console */ { DAVINCI_LPSC_GPIO }, +#ifdef CONFIG_MMC_DAVINCI + { DAVINCI_LPSC_MMC_SD }, +#endif }; -int board_init(void) +const int lpsc_size = ARRAY_SIZE(lpsc); + +#ifndef CONFIG_DA850_EVM_MAX_CPU_CLK +#define CONFIG_DA850_EVM_MAX_CPU_CLK 300000000 +#endif + +#define REV_AM18X_EVM 0x100 + +/* + * get_board_rev() - setup to pass kernel board revision information + * Returns: + * bit[0-3] Maximum cpu clock rate supported by onboard SoC + * 0000b - 300 MHz + * 0001b - 372 MHz + * 0010b - 408 MHz + * 0011b - 456 MHz + */ +u32 get_board_rev(void) { -#ifndef CONFIG_USE_IRQ - irq_init(); + char *s; + u32 maxcpuclk = CONFIG_DA850_EVM_MAX_CPU_CLK; + u32 rev = 0; + + s = getenv("maxcpuclk"); + if (s) + maxcpuclk = simple_strtoul(s, NULL, 10); + + if (maxcpuclk >= 456000000) + rev = 3; + else if (maxcpuclk >= 408000000) + rev = 2; + else if (maxcpuclk >= 372000000) + rev = 1; +#ifdef CONFIG_DA850_AM18X_EVM + rev |= REV_AM18X_EVM; #endif + return rev; +} + +int board_early_init_f(void) +{ + /* + * Power on required peripherals + * ARM does not have access by default to PSC0 and PSC1 + * assuming here that the DSP bootloader has set the IOPU + * such that PSC access is available to ARM + */ + if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc))) + return 1; + return 0; +} + +int board_init(void) +{ + irq_init(); #ifdef CONFIG_NAND_DAVINCI /* * NAND CS setup - cycle counts based on da850evm NAND timings in the * Linux kernel @ 25MHz EMIFA */ - writel((DAVINCI_ABCR_WSETUP(0) | - DAVINCI_ABCR_WSTROBE(0) | - DAVINCI_ABCR_WHOLD(0) | - DAVINCI_ABCR_RSETUP(0) | - DAVINCI_ABCR_RSTROBE(1) | + writel((DAVINCI_ABCR_WSETUP(2) | + DAVINCI_ABCR_WSTROBE(2) | + DAVINCI_ABCR_WHOLD(1) | + DAVINCI_ABCR_RSETUP(1) | + DAVINCI_ABCR_RSTROBE(4) | DAVINCI_ABCR_RHOLD(0) | - DAVINCI_ABCR_TA(0) | + DAVINCI_ABCR_TA(1) | DAVINCI_ABCR_ASIZE_8BIT), &davinci_emif_regs->ab2cr); /* CS3 */ #endif @@ -122,15 +348,6 @@ int board_init(void) /* address of boot parameters */ gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR; - /* - * Power on required peripherals - * ARM does not have access by default to PSC0 and PSC1 - * assuming here that the DSP bootloader has set the IOPU - * such that PSC access is available to ARM - */ - if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc))) - return 1; - /* setup the SUSPSRC for ARM to control emulation suspend */ writel(readl(&davinci_syscfg_regs->suspsrc) & ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C | @@ -142,6 +359,26 @@ int board_init(void) if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes))) return 1; +#ifdef CONFIG_USE_NOR + /* Set the GPIO direction as output */ + clrbits_le32((u32 *)GPIO_BANK0_REG_DIR_ADDR, (0x01 << 11)); + + /* Set the output as low */ + writel(0x01 << 11, GPIO_BANK0_REG_CLR_ADDR); +#endif + +#ifdef CONFIG_MMC_DAVINCI + /* Set the GPIO direction as output */ + clrbits_le32((u32 *)GPIO_BANK0_REG_DIR_ADDR, (0x01 << 11)); + + /* Set the output as high */ + writel(0x01 << 11, GPIO_BANK0_REG_SET_ADDR); +#endif + +#ifdef CONFIG_DRIVER_TI_EMAC + davinci_emac_mii_mode_sel(HAS_RMII); +#endif /* CONFIG_DRIVER_TI_EMAC */ + /* enable the console UART */ writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST | DAVINCI_UART_PWREMU_MGMT_UTRST), @@ -149,3 +386,108 @@ int board_init(void) return 0; } + +#ifdef CONFIG_DRIVER_TI_EMAC + +#ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII +/** + * rmii_hw_init + * + * DA850/OMAP-L138 EVM can interface to a daughter card for + * additional features. This card has an I2C GPIO Expander TCA6416 + * to select the required functions like camera, RMII Ethernet, + * character LCD, video. + * + * Initialization of the expander involves configuring the + * polarity and direction of the ports. P07-P05 are used here. + * These ports are connected to a Mux chip which enables only one + * functionality at a time. + * + * For RMII phy to respond, the MII MDIO clock has to be disabled + * since both the PHY devices have address as zero. The MII MDIO + * clock is controlled via GPIO2[6]. + * + * This code is valid for Beta version of the hardware + */ +int rmii_hw_init(void) +{ + const struct pinmux_config gpio_pins[] = { + { pinmux(6), 8, 1 } + }; + u_int8_t buf[2]; + unsigned int temp; + int ret; + + /* PinMux for GPIO */ + if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0) + return 1; + + /* I2C Exapnder configuration */ + /* Set polarity to non-inverted */ + buf[0] = 0x0; + buf[1] = 0x0; + ret = i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR, 4, 1, buf, 2); + if (ret) { + printf("\nExpander @ 0x%02x write FAILED!!!\n", + CONFIG_SYS_I2C_EXPANDER_ADDR); + return ret; + } + + /* Configure P07-P05 as outputs */ + buf[0] = 0x1f; + buf[1] = 0xff; + ret = i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR, 6, 1, buf, 2); + if (ret) { + printf("\nExpander @ 0x%02x write FAILED!!!\n", + CONFIG_SYS_I2C_EXPANDER_ADDR); + } + + /* For Ethernet RMII selection + * P07(SelA)=0 + * P06(SelB)=1 + * P05(SelC)=1 + */ + if (i2c_read(CONFIG_SYS_I2C_EXPANDER_ADDR, 2, 1, buf, 1)) { + printf("\nExpander @ 0x%02x read FAILED!!!\n", + CONFIG_SYS_I2C_EXPANDER_ADDR); + } + + buf[0] &= 0x1f; + buf[0] |= (0 << 7) | (1 << 6) | (1 << 5); + if (i2c_write(CONFIG_SYS_I2C_EXPANDER_ADDR, 2, 1, buf, 1)) { + printf("\nExpander @ 0x%02x write FAILED!!!\n", + CONFIG_SYS_I2C_EXPANDER_ADDR); + } + + /* Set the output as high */ + temp = REG(GPIO_BANK2_REG_SET_ADDR); + temp |= (0x01 << 6); + REG(GPIO_BANK2_REG_SET_ADDR) = temp; + + /* Set the GPIO direction as output */ + temp = REG(GPIO_BANK2_REG_DIR_ADDR); + temp &= ~(0x01 << 6); + REG(GPIO_BANK2_REG_DIR_ADDR) = temp; + + return 0; +} +#endif /* CONFIG_DRIVER_TI_EMAC_USE_RMII */ + +/* + * Initializes on-board ethernet controllers. + */ +int board_eth_init(bd_t *bis) +{ +#ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII + /* Select RMII fucntion through the expander */ + if (rmii_hw_init()) + printf("RMII hardware init failed!!!\n"); +#endif + if (!davinci_emac_initialize()) { + printf("Error: Ethernet init failed!\n"); + return -1; + } + + return 0; +} +#endif /* CONFIG_DRIVER_TI_EMAC */