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/*
* (C) Copyright 2012-2016 Stephen Warren
*
* SPDX-License-Identifier: GPL-2.0
*/
#ifndef _RPI_COMMON_H_
#define _RPI_COMMON_H_
#include <linux/sizes.h>
#include <asm/arch/timer.h>
/* Architecture, CPU, etc.*/
#define CONFIG_ARCH_CPU_INIT
#define CONFIG_SYS_TIMER_RATE 1000000
#define CONFIG_SYS_TIMER_COUNTER \
(&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo)
/*
* 2835 is a SKU in a series for which the 2708 is the first or primary SoC,
* so 2708 has historically been used rather than a dedicated 2835 ID.
*
* We don't define a machine type for bcm2709/bcm2836 since the RPi Foundation
* chose to use someone else's previously registered machine ID (3139, MX51_GGC)
* rather than obtaining a valid ID:-/
*
* For the bcm2837, hopefully a machine type is not needed, since everything
* is DT.
*/
#ifdef CONFIG_BCM2835
#define CONFIG_MACH_TYPE MACH_TYPE_BCM2708
#endif
/* Memory layout */
#define CONFIG_NR_DRAM_BANKS 1
#define CONFIG_SYS_SDRAM_BASE 0x00000000
#define CONFIG_SYS_TEXT_BASE 0x00008000
#define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE
/*
* The board really has 256M. However, the VC (VideoCore co-processor) shares
* the RAM, and uses a configurable portion at the top. We tell U-Boot that a
* smaller amount of RAM is present in order to avoid stomping on the area
* the VC uses.
*/
#define CONFIG_SYS_SDRAM_SIZE SZ_128M
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
CONFIG_SYS_SDRAM_SIZE - \
GENERATED_GBL_DATA_SIZE)
#define CONFIG_SYS_MALLOC_LEN SZ_4M
#define CONFIG_SYS_MEMTEST_START 0x00100000
#define CONFIG_SYS_MEMTEST_END 0x00200000
#define CONFIG_LOADADDR 0x00200000
/* Flash */
#define CONFIG_SYS_NO_FLASH
/* Devices */
/* GPIO */
#define CONFIG_BCM2835_GPIO
/* LCD */
#define CONFIG_LCD
#define CONFIG_LCD_DT_SIMPLEFB
#define LCD_BPP LCD_COLOR16
/*
* Prevent allocation of RAM for FB; the real FB address is queried
* dynamically from the VideoCore co-processor, and comes from RAM
* not owned by the ARM CPU.
*/
#define CONFIG_FB_ADDR 0
#define CONFIG_VIDEO_BCM2835
#define CONFIG_SYS_WHITE_ON_BLACK
#define CONFIG_CONSOLE_SCROLL_LINES 10
/* SD/MMC configuration */
#define CONFIG_GENERIC_MMC
#define CONFIG_MMC
#define CONFIG_SDHCI
#define CONFIG_MMC_SDHCI_IO_ACCESSORS
#define CONFIG_BCM2835_SDHCI
#define CONFIG_CMD_USB
#ifdef CONFIG_CMD_USB
#define CONFIG_USB_DWC2
#ifndef CONFIG_BCM2835
#define CONFIG_USB_DWC2_REG_ADDR 0x3f980000
#else
#define CONFIG_USB_DWC2_REG_ADDR 0x20980000
#endif
#define CONFIG_USB_STORAGE
#define CONFIG_USB_HOST_ETHER
#define CONFIG_USB_ETHER_SMSC95XX
#define CONFIG_MISC_INIT_R
#define CONFIG_USB_KEYBOARD
#define CONFIG_SYS_USB_EVENT_POLL
#define CONFIG_SYS_STDIO_DEREGISTER
#endif
/* Console UART */
#ifdef CONFIG_BCM2837
#define CONFIG_BCM283X_MU_SERIAL
#else
#define CONFIG_PL01X_SERIAL
#endif
#define CONFIG_CONS_INDEX 0
#define CONFIG_BAUDRATE 115200
/* Console configuration */
#define CONFIG_SYS_CBSIZE 1024
#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
sizeof(CONFIG_SYS_PROMPT) + 16)
/* Environment */
#define CONFIG_ENV_SIZE SZ_16K
#define CONFIG_ENV_IS_IN_FAT
#define FAT_ENV_INTERFACE "mmc"
#define FAT_ENV_DEVICE_AND_PART "0:1"
#define FAT_ENV_FILE "uboot.env"
#define CONFIG_FAT_WRITE
#define CONFIG_ENV_VARS_UBOOT_CONFIG
#define CONFIG_SYS_LOAD_ADDR 0x1000000
#define CONFIG_CONSOLE_MUX
#define CONFIG_SYS_CONSOLE_IS_IN_ENV
#define CONFIG_PREBOOT "usb start"
/* Shell */
#define CONFIG_SYS_MAXARGS 16
#define CONFIG_COMMAND_HISTORY
/* Commands */
#define CONFIG_CMD_MMC
#define CONFIG_PARTITION_UUIDS
#define CONFIG_CMD_PART
/* ATAGs support for bootm/bootz */
#define CONFIG_SETUP_MEMORY_TAGS
#define CONFIG_CMDLINE_TAG
#define CONFIG_INITRD_TAG
#include <config_distro_defaults.h>
/* Environment */
#define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
#define ENV_DEVICE_SETTINGS \
"stdin=serial,usbkbd\0" \
"stdout=serial,lcd\0" \
"stderr=serial,lcd\0"
/*
* Memory layout for where various images get loaded by boot scripts:
*
* I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
*
* fdt_addr_r simply shouldn't overlap anything else. However, the RPi's
* binary firmware loads a DT to address 0x100, so we choose this address to
* match it. This allows custom boot scripts to pass this DT on to Linux
* simply by not over-writing the data at this address. When using U-Boot,
* U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW
* and loads its own DT from disk (triggered by boot.scr or extlinux.conf).
*
* pxefile_addr_r can be pretty much anywhere that doesn't conflict with
* something else. Put it low in memory to avoid conflicts.
*
* kernel_addr_r must be within the first 128M of RAM in order for the
* kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
* decompress itself to 0x8000 after the start of RAM, kernel_addr_r
* should not overlap that area, or the kernel will have to copy itself
* somewhere else before decompression. Similarly, the address of any other
* data passed to the kernel shouldn't overlap the start of RAM. Pushing
* this up to 16M allows for a sizable kernel to be decompressed below the
* compressed load address.
*
* scriptaddr can be pretty much anywhere that doesn't conflict with something
* else. Choosing 32M allows for the compressed kernel to be up to 16M.
*
* ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
* for any boot script to be up to 1M, which is hopefully plenty.
*/
#define ENV_MEM_LAYOUT_SETTINGS \
"fdt_high=ffffffff\0" \
"initrd_high=ffffffff\0" \
"fdt_addr_r=0x00000100\0" \
"pxefile_addr_r=0x00100000\0" \
"kernel_addr_r=0x01000000\0" \
"scriptaddr=0x02000000\0" \
"ramdisk_addr_r=0x02100000\0" \
#define BOOT_TARGET_DEVICES(func) \
func(MMC, mmc, 0) \
func(USB, usb, 0) \
func(PXE, pxe, na) \
func(DHCP, dhcp, na)
#include <config_distro_bootcmd.h>
#define CONFIG_EXTRA_ENV_SETTINGS \
ENV_DEVICE_SETTINGS \
ENV_MEM_LAYOUT_SETTINGS \
BOOTENV
#define CONFIG_BOOTDELAY 2
#endif
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