1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * (C) Copyright 2012-2016 Stephen Warren 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #ifndef __CONFIG_H 8*4882a593Smuzhiyun #define __CONFIG_H 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #include <linux/sizes.h> 11*4882a593Smuzhiyun #include <asm/arch/timer.h> 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #if defined(CONFIG_TARGET_RPI_2) || defined(CONFIG_TARGET_RPI_3_32B) 14*4882a593Smuzhiyun #define CONFIG_SKIP_LOWLEVEL_INIT 15*4882a593Smuzhiyun #endif 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun /* Architecture, CPU, etc.*/ 18*4882a593Smuzhiyun #define CONFIG_ARCH_CPU_INIT 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun /* Use SoC timer for AArch32, but architected timer for AArch64 */ 21*4882a593Smuzhiyun #ifndef CONFIG_ARM64 22*4882a593Smuzhiyun #define CONFIG_SYS_TIMER_RATE 1000000 23*4882a593Smuzhiyun #define CONFIG_SYS_TIMER_COUNTER \ 24*4882a593Smuzhiyun (&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo) 25*4882a593Smuzhiyun #endif 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun /* 28*4882a593Smuzhiyun * 2835 is a SKU in a series for which the 2708 is the first or primary SoC, 29*4882a593Smuzhiyun * so 2708 has historically been used rather than a dedicated 2835 ID. 30*4882a593Smuzhiyun * 31*4882a593Smuzhiyun * We don't define a machine type for bcm2709/bcm2836 since the RPi Foundation 32*4882a593Smuzhiyun * chose to use someone else's previously registered machine ID (3139, MX51_GGC) 33*4882a593Smuzhiyun * rather than obtaining a valid ID:-/ 34*4882a593Smuzhiyun * 35*4882a593Smuzhiyun * For the bcm2837, hopefully a machine type is not needed, since everything 36*4882a593Smuzhiyun * is DT. 37*4882a593Smuzhiyun */ 38*4882a593Smuzhiyun #ifdef CONFIG_BCM2835 39*4882a593Smuzhiyun #define CONFIG_MACH_TYPE MACH_TYPE_BCM2708 40*4882a593Smuzhiyun #endif 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun /* Memory layout */ 43*4882a593Smuzhiyun #define CONFIG_NR_DRAM_BANKS 1 44*4882a593Smuzhiyun #define CONFIG_SYS_SDRAM_BASE 0x00000000 45*4882a593Smuzhiyun #ifdef CONFIG_ARM64 46*4882a593Smuzhiyun #define CONFIG_SYS_TEXT_BASE 0x00080000 47*4882a593Smuzhiyun #else 48*4882a593Smuzhiyun #define CONFIG_SYS_TEXT_BASE 0x00008000 49*4882a593Smuzhiyun #endif 50*4882a593Smuzhiyun #define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE 51*4882a593Smuzhiyun /* 52*4882a593Smuzhiyun * The board really has 256M. However, the VC (VideoCore co-processor) shares 53*4882a593Smuzhiyun * the RAM, and uses a configurable portion at the top. We tell U-Boot that a 54*4882a593Smuzhiyun * smaller amount of RAM is present in order to avoid stomping on the area 55*4882a593Smuzhiyun * the VC uses. 56*4882a593Smuzhiyun */ 57*4882a593Smuzhiyun #define CONFIG_SYS_SDRAM_SIZE SZ_128M 58*4882a593Smuzhiyun #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \ 59*4882a593Smuzhiyun CONFIG_SYS_SDRAM_SIZE - \ 60*4882a593Smuzhiyun GENERATED_GBL_DATA_SIZE) 61*4882a593Smuzhiyun #define CONFIG_SYS_MALLOC_LEN SZ_4M 62*4882a593Smuzhiyun #define CONFIG_SYS_MEMTEST_START 0x00100000 63*4882a593Smuzhiyun #define CONFIG_SYS_MEMTEST_END 0x00200000 64*4882a593Smuzhiyun #define CONFIG_LOADADDR 0x00200000 65*4882a593Smuzhiyun 66*4882a593Smuzhiyun /* Devices */ 67*4882a593Smuzhiyun /* GPIO */ 68*4882a593Smuzhiyun #define CONFIG_BCM2835_GPIO 69*4882a593Smuzhiyun /* LCD */ 70*4882a593Smuzhiyun #define CONFIG_LCD_DT_SIMPLEFB 71*4882a593Smuzhiyun #define CONFIG_VIDEO_BCM2835 72*4882a593Smuzhiyun 73*4882a593Smuzhiyun #ifdef CONFIG_CMD_USB 74*4882a593Smuzhiyun #define CONFIG_TFTP_TSIZE 75*4882a593Smuzhiyun #define CONFIG_MISC_INIT_R 76*4882a593Smuzhiyun #endif 77*4882a593Smuzhiyun 78*4882a593Smuzhiyun /* Console UART */ 79*4882a593Smuzhiyun #ifdef CONFIG_BCM2837 80*4882a593Smuzhiyun #define CONFIG_BCM283X_MU_SERIAL 81*4882a593Smuzhiyun #else 82*4882a593Smuzhiyun #define CONFIG_PL01X_SERIAL 83*4882a593Smuzhiyun #endif 84*4882a593Smuzhiyun 85*4882a593Smuzhiyun /* Console configuration */ 86*4882a593Smuzhiyun #define CONFIG_SYS_CBSIZE 1024 87*4882a593Smuzhiyun 88*4882a593Smuzhiyun /* Environment */ 89*4882a593Smuzhiyun #define CONFIG_ENV_SIZE SZ_16K 90*4882a593Smuzhiyun #define CONFIG_ENV_VARS_UBOOT_CONFIG 91*4882a593Smuzhiyun #define CONFIG_SYS_LOAD_ADDR 0x1000000 92*4882a593Smuzhiyun #define CONFIG_PREBOOT "usb start" 93*4882a593Smuzhiyun 94*4882a593Smuzhiyun /* Shell */ 95*4882a593Smuzhiyun #define CONFIG_CMDLINE_EDITING 96*4882a593Smuzhiyun 97*4882a593Smuzhiyun /* ATAGs support for bootm/bootz */ 98*4882a593Smuzhiyun #define CONFIG_SETUP_MEMORY_TAGS 99*4882a593Smuzhiyun #define CONFIG_CMDLINE_TAG 100*4882a593Smuzhiyun #define CONFIG_INITRD_TAG 101*4882a593Smuzhiyun 102*4882a593Smuzhiyun #include <config_distro_defaults.h> 103*4882a593Smuzhiyun 104*4882a593Smuzhiyun /* Environment */ 105*4882a593Smuzhiyun #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG 106*4882a593Smuzhiyun #define ENV_DEVICE_SETTINGS \ 107*4882a593Smuzhiyun "stdin=serial,usbkbd\0" \ 108*4882a593Smuzhiyun "stdout=serial,vidconsole\0" \ 109*4882a593Smuzhiyun "stderr=serial,vidconsole\0" 110*4882a593Smuzhiyun 111*4882a593Smuzhiyun /* 112*4882a593Smuzhiyun * Memory layout for where various images get loaded by boot scripts: 113*4882a593Smuzhiyun * 114*4882a593Smuzhiyun * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this. 115*4882a593Smuzhiyun * 116*4882a593Smuzhiyun * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's 117*4882a593Smuzhiyun * binary firmware loads a DT to address 0x100, so we choose this address to 118*4882a593Smuzhiyun * match it. This allows custom boot scripts to pass this DT on to Linux 119*4882a593Smuzhiyun * simply by not over-writing the data at this address. When using U-Boot, 120*4882a593Smuzhiyun * U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW 121*4882a593Smuzhiyun * and loads its own DT from disk (triggered by boot.scr or extlinux.conf). 122*4882a593Smuzhiyun * 123*4882a593Smuzhiyun * pxefile_addr_r can be pretty much anywhere that doesn't conflict with 124*4882a593Smuzhiyun * something else. Put it low in memory to avoid conflicts. 125*4882a593Smuzhiyun * 126*4882a593Smuzhiyun * kernel_addr_r must be within the first 128M of RAM in order for the 127*4882a593Smuzhiyun * kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will 128*4882a593Smuzhiyun * decompress itself to 0x8000 after the start of RAM, kernel_addr_r 129*4882a593Smuzhiyun * should not overlap that area, or the kernel will have to copy itself 130*4882a593Smuzhiyun * somewhere else before decompression. Similarly, the address of any other 131*4882a593Smuzhiyun * data passed to the kernel shouldn't overlap the start of RAM. Pushing 132*4882a593Smuzhiyun * this up to 16M allows for a sizable kernel to be decompressed below the 133*4882a593Smuzhiyun * compressed load address. 134*4882a593Smuzhiyun * 135*4882a593Smuzhiyun * scriptaddr can be pretty much anywhere that doesn't conflict with something 136*4882a593Smuzhiyun * else. Choosing 32M allows for the compressed kernel to be up to 16M. 137*4882a593Smuzhiyun * 138*4882a593Smuzhiyun * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows 139*4882a593Smuzhiyun * for any boot script to be up to 1M, which is hopefully plenty. 140*4882a593Smuzhiyun */ 141*4882a593Smuzhiyun #define ENV_MEM_LAYOUT_SETTINGS \ 142*4882a593Smuzhiyun "fdt_high=ffffffff\0" \ 143*4882a593Smuzhiyun "initrd_high=ffffffff\0" \ 144*4882a593Smuzhiyun "fdt_addr_r=0x00000100\0" \ 145*4882a593Smuzhiyun "pxefile_addr_r=0x00100000\0" \ 146*4882a593Smuzhiyun "kernel_addr_r=0x01000000\0" \ 147*4882a593Smuzhiyun "scriptaddr=0x02000000\0" \ 148*4882a593Smuzhiyun "ramdisk_addr_r=0x02100000\0" \ 149*4882a593Smuzhiyun 150*4882a593Smuzhiyun #define BOOT_TARGET_DEVICES(func) \ 151*4882a593Smuzhiyun func(MMC, mmc, 0) \ 152*4882a593Smuzhiyun func(USB, usb, 0) \ 153*4882a593Smuzhiyun func(PXE, pxe, na) \ 154*4882a593Smuzhiyun func(DHCP, dhcp, na) 155*4882a593Smuzhiyun #include <config_distro_bootcmd.h> 156*4882a593Smuzhiyun 157*4882a593Smuzhiyun #define CONFIG_EXTRA_ENV_SETTINGS \ 158*4882a593Smuzhiyun "dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \ 159*4882a593Smuzhiyun ENV_DEVICE_SETTINGS \ 160*4882a593Smuzhiyun ENV_MEM_LAYOUT_SETTINGS \ 161*4882a593Smuzhiyun BOOTENV 162*4882a593Smuzhiyun 163*4882a593Smuzhiyun 164*4882a593Smuzhiyun #endif 165