upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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340 lines
7.4 KiB
340 lines
7.4 KiB
/*
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* Copyright (C) ST-Ericsson SA 2009
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <config.h>
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#include <common.h>
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#include <malloc.h>
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#include <i2c.h>
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#include <mmc.h>
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#include <asm/types.h>
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#include <asm/io.h>
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#include <asm/errno.h>
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#include <asm/arch/db8500_pincfg.h>
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#include <asm/arch/prcmu.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/sys_proto.h>
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#ifdef CONFIG_MMC
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#include "../../../drivers/mmc/arm_pl180_mmci.h"
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#endif
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#include "db8500_pins.h"
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/*
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* Get a global data pointer
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*/
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DECLARE_GLOBAL_DATA_PTR;
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/*
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* Memory controller register
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*/
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#define DMC_BASE_ADDR 0x80156000
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#define DMC_CTL_97 (DMC_BASE_ADDR + 0x184)
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/*
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* GPIO pin config common for MOP500/HREF boards
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*/
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unsigned long gpio_cfg_common[] = {
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/* I2C */
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GPIO147_I2C0_SCL,
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GPIO148_I2C0_SDA,
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GPIO16_I2C1_SCL,
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GPIO17_I2C1_SDA,
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GPIO10_I2C2_SDA,
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GPIO11_I2C2_SCL,
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GPIO229_I2C3_SDA,
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GPIO230_I2C3_SCL,
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/* SSP0, to AB8500 */
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GPIO143_SSP0_CLK,
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GPIO144_SSP0_FRM,
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GPIO145_SSP0_RXD | PIN_PULL_DOWN,
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GPIO146_SSP0_TXD,
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/* MMC0 (MicroSD card) */
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GPIO18_MC0_CMDDIR | PIN_OUTPUT_HIGH,
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GPIO19_MC0_DAT0DIR | PIN_OUTPUT_HIGH,
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GPIO20_MC0_DAT2DIR | PIN_OUTPUT_HIGH,
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GPIO21_MC0_DAT31DIR | PIN_OUTPUT_HIGH,
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GPIO22_MC0_FBCLK | PIN_INPUT_NOPULL,
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GPIO23_MC0_CLK | PIN_OUTPUT_LOW,
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GPIO24_MC0_CMD | PIN_INPUT_PULLUP,
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GPIO25_MC0_DAT0 | PIN_INPUT_PULLUP,
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GPIO26_MC0_DAT1 | PIN_INPUT_PULLUP,
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GPIO27_MC0_DAT2 | PIN_INPUT_PULLUP,
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GPIO28_MC0_DAT3 | PIN_INPUT_PULLUP,
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/* MMC4 (On-board eMMC) */
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GPIO197_MC4_DAT3 | PIN_INPUT_PULLUP,
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GPIO198_MC4_DAT2 | PIN_INPUT_PULLUP,
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GPIO199_MC4_DAT1 | PIN_INPUT_PULLUP,
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GPIO200_MC4_DAT0 | PIN_INPUT_PULLUP,
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GPIO201_MC4_CMD | PIN_INPUT_PULLUP,
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GPIO202_MC4_FBCLK | PIN_INPUT_NOPULL,
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GPIO203_MC4_CLK | PIN_OUTPUT_LOW,
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GPIO204_MC4_DAT7 | PIN_INPUT_PULLUP,
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GPIO205_MC4_DAT6 | PIN_INPUT_PULLUP,
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GPIO206_MC4_DAT5 | PIN_INPUT_PULLUP,
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GPIO207_MC4_DAT4 | PIN_INPUT_PULLUP,
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/* UART2, console */
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GPIO29_U2_RXD | PIN_INPUT_PULLUP,
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GPIO30_U2_TXD | PIN_OUTPUT_HIGH,
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GPIO31_U2_CTSn | PIN_INPUT_PULLUP,
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GPIO32_U2_RTSn | PIN_OUTPUT_HIGH,
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/*
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* USB, pin 256-267 USB, Is probably already setup correctly from
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* BootROM/boot stages, but we don't trust that and set it up anyway
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*/
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GPIO256_USB_NXT,
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GPIO257_USB_STP,
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GPIO258_USB_XCLK,
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GPIO259_USB_DIR,
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GPIO260_USB_DAT7,
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GPIO261_USB_DAT6,
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GPIO262_USB_DAT5,
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GPIO263_USB_DAT4,
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GPIO264_USB_DAT3,
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GPIO265_USB_DAT2,
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GPIO266_USB_DAT1,
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GPIO267_USB_DAT0,
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};
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unsigned long gpio_cfg_snowball[] = {
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/* MMC0 (MicroSD card) */
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GPIO217_GPIO | PIN_OUTPUT_HIGH, /* MMC_EN */
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GPIO218_GPIO | PIN_INPUT_NOPULL, /* MMC_CD */
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GPIO228_GPIO | PIN_OUTPUT_HIGH, /* SD_SEL */
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/* eMMC */
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GPIO167_GPIO | PIN_OUTPUT_HIGH, /* RSTn_MLC */
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/* LAN */
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GPIO131_SM_ADQ8,
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GPIO132_SM_ADQ9,
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GPIO133_SM_ADQ10,
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GPIO134_SM_ADQ11,
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GPIO135_SM_ADQ12,
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GPIO136_SM_ADQ13,
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GPIO137_SM_ADQ14,
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GPIO138_SM_ADQ15,
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/* RSTn_LAN */
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GPIO141_GPIO | PIN_OUTPUT_HIGH,
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};
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/*
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* Miscellaneous platform dependent initialisations
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*/
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int board_init(void)
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{
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/*
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* Setup board (bd) and board-info (bi).
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* bi_arch_number: Unique id for this board. It will passed in r1 to
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* Linux startup code and is the machine_id.
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* bi_boot_params: Where this board expects params.
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*/
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gd->bd->bi_arch_number = MACH_TYPE_SNOWBALL;
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gd->bd->bi_boot_params = 0x00000100;
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/* Configure GPIO pins needed by U-boot */
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db8500_gpio_config_pins(gpio_cfg_common, ARRAY_SIZE(gpio_cfg_common));
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db8500_gpio_config_pins(gpio_cfg_snowball,
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ARRAY_SIZE(gpio_cfg_snowball));
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return 0;
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}
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int dram_init(void)
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{
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gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
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gd->ram_size = gd->bd->bi_dram[0].size =
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get_ram_size(CONFIG_SYS_SDRAM_BASE, CONFIG_SYS_MAX_RAM_SIZE);
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return 0;
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}
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static int raise_ab8500_gpio16(void)
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{
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int ret;
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/* selection */
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ret = ab8500_read(AB8500_MISC, AB8500_GPIO_SEL2_REG);
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if (ret < 0)
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goto out;
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ret |= 0x80;
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ret = ab8500_write(AB8500_MISC, AB8500_GPIO_SEL2_REG, ret);
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if (ret < 0)
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goto out;
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/* direction */
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ret = ab8500_read(AB8500_MISC, AB8500_GPIO_DIR2_REG);
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if (ret < 0)
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goto out;
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ret |= 0x80;
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ret = ab8500_write(AB8500_MISC, AB8500_GPIO_DIR2_REG, ret);
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if (ret < 0)
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goto out;
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/* out */
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ret = ab8500_read(AB8500_MISC, AB8500_GPIO_OUT2_REG);
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if (ret < 0)
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goto out;
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ret |= 0x80;
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ret = ab8500_write(AB8500_MISC, AB8500_GPIO_OUT2_REG, ret);
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out:
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return ret;
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}
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static int raise_ab8500_gpio26(void)
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{
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int ret;
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/* selection */
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ret = ab8500_read(AB8500_MISC, AB8500_GPIO_DIR4_REG);
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if (ret < 0)
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goto out;
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ret |= 0x2;
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ret = ab8500_write(AB8500_MISC, AB8500_GPIO_DIR4_REG, ret);
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if (ret < 0)
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goto out;
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/* out */
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ret = ab8500_read(AB8500_MISC, AB8500_GPIO_OUT4_REG);
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if (ret < 0)
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goto out;
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ret |= 0x2;
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ret = ab8500_write(AB8500_MISC, AB8500_GPIO_OUT4_REG, ret);
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out:
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return ret;
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}
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int board_late_init(void)
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{
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/* enable 3V3 for LAN controller */
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if (raise_ab8500_gpio26() >= 0) {
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/* Turn on FSMC device */
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writel(0x1, 0x8000f000);
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writel(0x1, 0x8000f008);
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/* setup FSMC for LAN controler */
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writel(0x305b, 0x80000000);
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/* run at the highest possible speed */
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writel(0x01010210, 0x80000004);
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} else
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printf("error: can't raise GPIO26\n");
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/* enable 3v6 for GBF chip */
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if ((raise_ab8500_gpio16() < 0))
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printf("error: cant' raise GPIO16\n");
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/* empty UART RX FIFO */
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while (tstc())
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(void) getc();
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return 0;
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}
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#ifdef CONFIG_MMC
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/*
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* emmc_host_init - initialize the emmc controller.
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* Configure GPIO settings, set initial clock and power for emmc slot.
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* Initialize mmc struct and register with mmc framework.
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*/
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static int emmc_host_init(void)
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{
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struct pl180_mmc_host *host;
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host = malloc(sizeof(struct pl180_mmc_host));
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if (!host)
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return -ENOMEM;
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memset(host, 0, sizeof(*host));
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host->base = (struct sdi_registers *)CFG_EMMC_BASE;
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host->pwr_init = SDI_PWR_OPD | SDI_PWR_PWRCTRL_ON;
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host->clkdiv_init = SDI_CLKCR_CLKDIV_INIT_V2 |
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SDI_CLKCR_CLKEN | SDI_CLKCR_HWFC_EN;
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strcpy(host->name, "EMMC");
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host->caps = MMC_MODE_8BIT | MMC_MODE_HS | MMC_MODE_HS_52MHz;
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host->voltages = VOLTAGE_WINDOW_MMC;
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host->clock_min = ARM_MCLK / (2 + SDI_CLKCR_CLKDIV_INIT_V2);
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host->clock_max = ARM_MCLK / 2;
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host->clock_in = ARM_MCLK;
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host->version2 = 1;
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return arm_pl180_mmci_init(host);
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}
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/*
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* mmc_host_init - initialize the external mmc controller.
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* Configure GPIO settings, set initial clock and power for mmc slot.
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* Initialize mmc struct and register with mmc framework.
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*/
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static int mmc_host_init(void)
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{
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struct pl180_mmc_host *host;
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u32 sdi_u32;
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host = malloc(sizeof(struct pl180_mmc_host));
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if (!host)
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return -ENOMEM;
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memset(host, 0, sizeof(*host));
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host->base = (struct sdi_registers *)CFG_MMC_BASE;
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sdi_u32 = 0xBF;
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writel(sdi_u32, &host->base->power);
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host->pwr_init = 0xBF;
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host->clkdiv_init = SDI_CLKCR_CLKDIV_INIT_V2 |
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SDI_CLKCR_CLKEN | SDI_CLKCR_HWFC_EN;
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strcpy(host->name, "MMC");
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host->caps = MMC_MODE_8BIT;
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host->b_max = 0;
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host->voltages = VOLTAGE_WINDOW_SD;
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host->clock_min = ARM_MCLK / (2 + SDI_CLKCR_CLKDIV_INIT_V2);
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host->clock_max = ARM_MCLK / 2;
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host->clock_in = ARM_MCLK;
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host->version2 = 1;
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return arm_pl180_mmci_init(host);
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}
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/*
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* board_mmc_init - initialize all the mmc/sd host controllers.
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* Called by generic mmc framework.
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*/
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int board_mmc_init(bd_t *bis)
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{
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int error;
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(void) bis;
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error = emmc_host_init();
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if (error) {
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printf("emmc_host_init() %d\n", error);
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return -1;
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}
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u8500_mmc_power_init();
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error = mmc_host_init();
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if (error) {
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printf("mmc_host_init() %d\n", error);
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return -1;
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}
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return 0;
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}
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#endif /* CONFIG_MMC */
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