mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 10:48:51 +00:00
7ee37d0e0c
Due to size limitations of the MERAM, switch U-Boot to SPL.
The SPL is loaded by the SPI_LOADER into MERAM and then loads
U-Boot proper into DRAM. This way U-Boot can freely grow in
size in DRAM, as there is plenty of it.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
---
NOTE: To update U-Boot, first install u-boot.img to 0x140000 in SPI NOR,
then use the Minimon to flash u-boot-spl.srec using ls,2,e6304000.
To generate u-boot-spl.srec, use objcopy:
arm-linux-gnueabi-objcopy -O srec spl/u-boot-spl u-boot-spl.srec
139 lines
2.7 KiB
C
139 lines
2.7 KiB
C
/*
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* board/renesas/porter/porter.c
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*
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* Copyright (C) 2015 Renesas Electronics Corporation
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* Copyright (C) 2015 Cogent Embedded, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0
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*/
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#include <common.h>
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#include <malloc.h>
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#include <dm.h>
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#include <dm/platform_data/serial_sh.h>
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#include <asm/processor.h>
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#include <asm/mach-types.h>
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#include <asm/io.h>
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#include <linux/errno.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/gpio.h>
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#include <asm/arch/rmobile.h>
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#include <asm/arch/rcar-mstp.h>
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#include <asm/arch/sh_sdhi.h>
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#include <netdev.h>
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#include <miiphy.h>
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#include <i2c.h>
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#include <div64.h>
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#include "qos.h"
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DECLARE_GLOBAL_DATA_PTR;
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#define CLK2MHZ(clk) (clk / 1000 / 1000)
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void s_init(void)
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{
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struct rcar_rwdt *rwdt = (struct rcar_rwdt *)RWDT_BASE;
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struct rcar_swdt *swdt = (struct rcar_swdt *)SWDT_BASE;
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u32 stc;
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/* Watchdog init */
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writel(0xA5A5A500, &rwdt->rwtcsra);
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writel(0xA5A5A500, &swdt->swtcsra);
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/* CPU frequency setting. Set to 1.5GHz */
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stc = ((1500 / CLK2MHZ(CONFIG_SYS_CLK_FREQ)) - 1) << PLL0_STC_BIT;
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clrsetbits_le32(PLL0CR, PLL0_STC_MASK, stc);
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/* QoS */
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qos_init();
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}
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#define TMU0_MSTP125 BIT(25)
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#define SD2CKCR 0xE615026C
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#define SD_97500KHZ 0x7
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int board_early_init_f(void)
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{
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mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125);
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/*
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* SD0 clock is set to 97.5MHz by default.
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* Set SD2 to the 97.5MHz as well.
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*/
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writel(SD_97500KHZ, SD2CKCR);
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return 0;
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}
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int board_init(void)
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{
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/* adress of boot parameters */
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gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
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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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if (fdtdec_setup_memory_size() != 0)
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return -EINVAL;
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return 0;
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}
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int dram_init_banksize(void)
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{
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fdtdec_setup_memory_banksize();
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return 0;
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}
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/* porter has KSZ8041RNLI */
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#define PHY_CONTROL1 0x1E
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#define PHY_LED_MODE 0xC0000
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#define PHY_LED_MODE_ACK 0x4000
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int board_phy_config(struct phy_device *phydev)
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{
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int ret = phy_read(phydev, MDIO_DEVAD_NONE, PHY_CONTROL1);
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ret &= ~PHY_LED_MODE;
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ret |= PHY_LED_MODE_ACK;
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ret = phy_write(phydev, MDIO_DEVAD_NONE, PHY_CONTROL1, (u16)ret);
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return 0;
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}
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const struct rmobile_sysinfo sysinfo = {
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CONFIG_ARCH_RMOBILE_BOARD_STRING
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};
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void reset_cpu(ulong addr)
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{
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u8 val;
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i2c_set_bus_num(2); /* PowerIC connected to ch2 */
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i2c_read(CONFIG_SYS_I2C_POWERIC_ADDR, 0x13, 1, &val, 1);
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val |= 0x02;
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i2c_write(CONFIG_SYS_I2C_POWERIC_ADDR, 0x13, 1, &val, 1);
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}
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#ifdef CONFIG_SPL_BUILD
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#include <spl.h>
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void board_init_f(ulong dummy)
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{
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board_early_init_f();
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}
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void spl_board_init(void)
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{
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/* UART clocks enabled and gd valid - init serial console */
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preloader_console_init();
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}
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void board_boot_order(u32 *spl_boot_list)
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{
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/* Boot from SPI NOR with YMODEM UART fallback. */
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spl_boot_list[0] = BOOT_DEVICE_SPI;
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spl_boot_list[1] = BOOT_DEVICE_UART;
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spl_boot_list[2] = BOOT_DEVICE_NONE;
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}
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#endif
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