diff options
Diffstat (limited to 'roms/u-boot/arch/arm/mach-aspeed/ast2500')
5 files changed, 165 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/mach-aspeed/ast2500/Kconfig b/roms/u-boot/arch/arm/mach-aspeed/ast2500/Kconfig new file mode 100644 index 000000000..b815153bf --- /dev/null +++ b/roms/u-boot/arch/arm/mach-aspeed/ast2500/Kconfig @@ -0,0 +1,16 @@ +if ASPEED_AST2500 + +config SYS_CPU + default "arm1176" + +config TARGET_EVB_AST2500 + bool "Evb-AST2500" + help + Evb-AST2500 is Aspeed evaluation board for AST2500 chip. + It has 512M of RAM, 32M of SPI flash, two Ethernet ports, + 4 Serial ports, 4 USB ports, VGA port, PCIe, SD card slot, + 20 pin JTAG, pinouts for 14 I2Cs, 3 SPIs and eSPI, 8 PWMs. + +source "board/aspeed/evb_ast2500/Kconfig" + +endif diff --git a/roms/u-boot/arch/arm/mach-aspeed/ast2500/Makefile b/roms/u-boot/arch/arm/mach-aspeed/ast2500/Makefile new file mode 100644 index 000000000..db70432ad --- /dev/null +++ b/roms/u-boot/arch/arm/mach-aspeed/ast2500/Makefile @@ -0,0 +1,3 @@ +obj-y += lowlevel_init.o +obj-y += board_common.o +obj-y += clk_ast2500.o diff --git a/roms/u-boot/arch/arm/mach-aspeed/ast2500/board_common.c b/roms/u-boot/arch/arm/mach-aspeed/ast2500/board_common.c new file mode 100644 index 000000000..aca200223 --- /dev/null +++ b/roms/u-boot/arch/arm/mach-aspeed/ast2500/board_common.c @@ -0,0 +1,60 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2016 Google, Inc + */ +#include <common.h> +#include <dm.h> +#include <init.h> +#include <log.h> +#include <ram.h> +#include <timer.h> +#include <asm/global_data.h> +#include <asm/io.h> +#include <asm/arch/timer.h> +#include <asm/arch/wdt.h> +#include <linux/err.h> +#include <dm/uclass.h> + +/* + * Second Watchdog Timer by default is configured + * to trigger secondary boot source. + */ +#define AST_2ND_BOOT_WDT 1 + +/* + * Third Watchdog Timer by default is configured + * to toggle Flash address mode switch before reset. + */ +#define AST_FLASH_ADDR_DETECT_WDT 2 + +DECLARE_GLOBAL_DATA_PTR; + +int board_init(void) +{ + gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; + + return 0; +} + +int dram_init(void) +{ + struct udevice *dev; + struct ram_info ram; + int ret; + + ret = uclass_get_device(UCLASS_RAM, 0, &dev); + if (ret) { + debug("DRAM FAIL1\r\n"); + return ret; + } + + ret = ram_get_info(dev, &ram); + if (ret) { + debug("DRAM FAIL2\r\n"); + return ret; + } + + gd->ram_size = ram.size; + + return 0; +} diff --git a/roms/u-boot/arch/arm/mach-aspeed/ast2500/clk_ast2500.c b/roms/u-boot/arch/arm/mach-aspeed/ast2500/clk_ast2500.c new file mode 100644 index 000000000..02bd3f67c --- /dev/null +++ b/roms/u-boot/arch/arm/mach-aspeed/ast2500/clk_ast2500.c @@ -0,0 +1,45 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Google, Inc + */ + +#include <common.h> +#include <dm.h> +#include <asm/io.h> +#include <asm/arch/scu_ast2500.h> +#include <linux/err.h> + +int ast_get_clk(struct udevice **devp) +{ + return uclass_get_device_by_driver(UCLASS_CLK, + DM_DRIVER_GET(aspeed_ast2500_scu), devp); +} + +void *ast_get_scu(void) +{ + struct ast2500_clk_priv *priv; + struct udevice *dev; + int ret; + + ret = ast_get_clk(&dev); + if (ret) + return ERR_PTR(ret); + + priv = dev_get_priv(dev); + + return priv->scu; +} + +void ast_scu_unlock(struct ast2500_scu *scu) +{ + writel(SCU_UNLOCK_VALUE, &scu->protection_key); + while (!readl(&scu->protection_key)) + ; +} + +void ast_scu_lock(struct ast2500_scu *scu) +{ + writel(~SCU_UNLOCK_VALUE, &scu->protection_key); + while (readl(&scu->protection_key)) + ; +} diff --git a/roms/u-boot/arch/arm/mach-aspeed/ast2500/lowlevel_init.S b/roms/u-boot/arch/arm/mach-aspeed/ast2500/lowlevel_init.S new file mode 100644 index 000000000..9ec3dd46b --- /dev/null +++ b/roms/u-boot/arch/arm/mach-aspeed/ast2500/lowlevel_init.S @@ -0,0 +1,41 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) ASPEED Technology Inc. + */ +#include <asm/arch/scu_ast2500.h> + +/* registers for low level init */ +#define SCU_PROT_KEY 0x1e6e2000 +#define SCU_VGA_HANDSHAKE 0x1e6e2040 +#define SCU_HW_STRAP 0x1e6e2070 +#define SCU_HW_STRAP_CLR 0x1e6e207c +#define WDT3_CTRL 0x1e78504c + +.global lowlevel_init +lowlevel_init: + + /* unlock SCU */ + ldr r0, =SCU_PROT_KEY + ldr r1, =SCU_UNLOCK_VALUE + str r1, [r0] + + /* set BMC FW as DRAM initializer */ + ldr r0, =SCU_VGA_HANDSHAKE + ldr r1, [r0] + orr r1, #0x80 + str r1, [r0] + + /* set PERST# as LPC reset source if eSPI mode is enabled*/ + ldr r0, =SCU_HW_STRAP + ldr r1, [r0] + tst r1, #(0x1 << 25) + ldrne r0, =SCU_HW_STRAP_CLR + movne r1, #(0x1 << 14) + strne r1, [r0] + + /* disable WDT3 for SPI 3/4 bytes auto-detection */ + ldr r0, =WDT3_CTRL + mov r1, #0x0 + str r1, [r0] + + mov pc, lr |