@ -1,5 +1,5 @@
/*
* ( C ) Copyright 2012 , 2015 Stephen Warren
* ( C ) Copyright 2012 - 2016 Stephen Warren
*
* SPDX - License - Identifier : GPL - 2.0
*/
@ -7,8 +7,210 @@
# ifndef __CONFIG_H
# define __CONFIG_H
# include <linux/sizes.h>
# include <asm/arch/timer.h>
# if defined(CONFIG_TARGET_RPI_2) || defined(CONFIG_TARGET_RPI_3_32B)
# define CONFIG_SKIP_LOWLEVEL_INIT
# endif
# ifdef CONFIG_BCM2835
# define CONFIG_SYS_CACHELINE_SIZE 32
# else
# define CONFIG_SYS_CACHELINE_SIZE 64
# endif
/* Architecture, CPU, etc.*/
# define CONFIG_ARCH_CPU_INIT
/* Use SoC timer for AArch32, but architected timer for AArch64 */
# ifndef CONFIG_ARM64
# define CONFIG_SYS_TIMER_RATE 1000000
# define CONFIG_SYS_TIMER_COUNTER \
( & ( ( struct bcm2835_timer_regs * ) BCM2835_TIMER_PHYSADDR ) - > clo )
# endif
/*
* 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 256 M . 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 128 M 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 16 M 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 32 M allows for the compressed kernel to be up to 16 M .
*
* ramdisk_addr_r simply shouldn ' t overlap anything else . Choosing 33 M allows
* for any boot script to be up to 1 M , 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 \
" dhcpuboot=usb start; dhcp u-boot.uimg; bootm \0 " \
ENV_DEVICE_SETTINGS \
ENV_MEM_LAYOUT_SETTINGS \
BOOTENV
# include "rpi-common.h"
# define CONFIG_BOOTDELAY 2
# endif
Stephen Warren
8 years ago
committed by
Tom Rini