1 /* 2 * (C) Copyright 2012-2016 Stephen Warren 3 * 4 * SPDX-License-Identifier: GPL-2.0 5 */ 6 7 #ifndef __CONFIG_H 8 #define __CONFIG_H 9 10 #include <linux/sizes.h> 11 #include <asm/arch/timer.h> 12 13 #if defined(CONFIG_TARGET_RPI_2) || defined(CONFIG_TARGET_RPI_3_32B) 14 #define CONFIG_SKIP_LOWLEVEL_INIT 15 #endif 16 17 /* Architecture, CPU, etc.*/ 18 #define CONFIG_ARCH_CPU_INIT 19 #define CONFIG_BOARD_EARLY_INIT_F 20 21 /* Use SoC timer for AArch32, but architected timer for AArch64 */ 22 #ifndef CONFIG_ARM64 23 #define CONFIG_SYS_TIMER_RATE 1000000 24 #define CONFIG_SYS_TIMER_COUNTER \ 25 (&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo) 26 #endif 27 28 /* 29 * 2835 is a SKU in a series for which the 2708 is the first or primary SoC, 30 * so 2708 has historically been used rather than a dedicated 2835 ID. 31 * 32 * We don't define a machine type for bcm2709/bcm2836 since the RPi Foundation 33 * chose to use someone else's previously registered machine ID (3139, MX51_GGC) 34 * rather than obtaining a valid ID:-/ 35 * 36 * For the bcm2837, hopefully a machine type is not needed, since everything 37 * is DT. 38 */ 39 #ifdef CONFIG_BCM2835 40 #define CONFIG_MACH_TYPE MACH_TYPE_BCM2708 41 #endif 42 43 /* Memory layout */ 44 #define CONFIG_NR_DRAM_BANKS 1 45 #define CONFIG_SYS_SDRAM_BASE 0x00000000 46 #ifdef CONFIG_ARM64 47 #define CONFIG_SYS_TEXT_BASE 0x00080000 48 #else 49 #define CONFIG_SYS_TEXT_BASE 0x00008000 50 #endif 51 #define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE 52 /* 53 * The board really has 256M. However, the VC (VideoCore co-processor) shares 54 * the RAM, and uses a configurable portion at the top. We tell U-Boot that a 55 * smaller amount of RAM is present in order to avoid stomping on the area 56 * the VC uses. 57 */ 58 #define CONFIG_SYS_SDRAM_SIZE SZ_128M 59 #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \ 60 CONFIG_SYS_SDRAM_SIZE - \ 61 GENERATED_GBL_DATA_SIZE) 62 #define CONFIG_SYS_MALLOC_LEN SZ_4M 63 #define CONFIG_SYS_MEMTEST_START 0x00100000 64 #define CONFIG_SYS_MEMTEST_END 0x00200000 65 #define CONFIG_LOADADDR 0x00200000 66 67 /* Flash */ 68 #define CONFIG_SYS_NO_FLASH 69 70 /* Devices */ 71 /* GPIO */ 72 #define CONFIG_BCM2835_GPIO 73 /* LCD */ 74 #define CONFIG_LCD_DT_SIMPLEFB 75 #define LCD_BPP LCD_COLOR16 76 /* 77 * Prevent allocation of RAM for FB; the real FB address is queried 78 * dynamically from the VideoCore co-processor, and comes from RAM 79 * not owned by the ARM CPU. 80 */ 81 #define CONFIG_FB_ADDR 0 82 #define CONFIG_VIDEO_BCM2835 83 #define CONFIG_SYS_WHITE_ON_BLACK 84 85 /* SD/MMC configuration */ 86 #define CONFIG_GENERIC_MMC 87 #define CONFIG_MMC 88 #define CONFIG_SDHCI 89 #define CONFIG_MMC_SDHCI_IO_ACCESSORS 90 #define CONFIG_BCM2835_SDHCI 91 92 #ifdef CONFIG_CMD_USB 93 #define CONFIG_USB_DWC2 94 #ifndef CONFIG_BCM2835 95 #define CONFIG_USB_DWC2_REG_ADDR 0x3f980000 96 #else 97 #define CONFIG_USB_DWC2_REG_ADDR 0x20980000 98 #endif 99 #define CONFIG_USB_HOST_ETHER 100 #define CONFIG_USB_ETHER_SMSC95XX 101 #define CONFIG_TFTP_TSIZE 102 #define CONFIG_MISC_INIT_R 103 #define CONFIG_SYS_USB_EVENT_POLL 104 #endif 105 106 /* Console UART */ 107 #ifdef CONFIG_BCM2837 108 #define CONFIG_BCM283X_MU_SERIAL 109 #else 110 #define CONFIG_PL01X_SERIAL 111 #endif 112 #define CONFIG_CONS_INDEX 0 113 #define CONFIG_BAUDRATE 115200 114 115 /* Console configuration */ 116 #define CONFIG_SYS_CBSIZE 1024 117 #define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \ 118 sizeof(CONFIG_SYS_PROMPT) + 16) 119 120 /* Environment */ 121 #define CONFIG_ENV_SIZE SZ_16K 122 #define CONFIG_ENV_IS_IN_FAT 123 #define FAT_ENV_INTERFACE "mmc" 124 #define FAT_ENV_DEVICE_AND_PART "0:1" 125 #define FAT_ENV_FILE "uboot.env" 126 #define CONFIG_FAT_WRITE 127 #define CONFIG_ENV_VARS_UBOOT_CONFIG 128 #define CONFIG_SYS_LOAD_ADDR 0x1000000 129 #define CONFIG_PREBOOT "usb start" 130 131 /* Shell */ 132 #define CONFIG_SYS_MAXARGS 16 133 #define CONFIG_COMMAND_HISTORY 134 135 /* Commands */ 136 #define CONFIG_PARTITION_UUIDS 137 #define CONFIG_CMD_PART 138 139 /* ATAGs support for bootm/bootz */ 140 #define CONFIG_SETUP_MEMORY_TAGS 141 #define CONFIG_CMDLINE_TAG 142 #define CONFIG_INITRD_TAG 143 144 #include <config_distro_defaults.h> 145 146 /* Environment */ 147 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG 148 #define ENV_DEVICE_SETTINGS \ 149 "stdin=serial,usbkbd\0" \ 150 "stdout=serial,lcd\0" \ 151 "stderr=serial,lcd\0" 152 153 /* 154 * Memory layout for where various images get loaded by boot scripts: 155 * 156 * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this. 157 * 158 * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's 159 * binary firmware loads a DT to address 0x100, so we choose this address to 160 * match it. This allows custom boot scripts to pass this DT on to Linux 161 * simply by not over-writing the data at this address. When using U-Boot, 162 * U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW 163 * and loads its own DT from disk (triggered by boot.scr or extlinux.conf). 164 * 165 * pxefile_addr_r can be pretty much anywhere that doesn't conflict with 166 * something else. Put it low in memory to avoid conflicts. 167 * 168 * kernel_addr_r must be within the first 128M of RAM in order for the 169 * kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will 170 * decompress itself to 0x8000 after the start of RAM, kernel_addr_r 171 * should not overlap that area, or the kernel will have to copy itself 172 * somewhere else before decompression. Similarly, the address of any other 173 * data passed to the kernel shouldn't overlap the start of RAM. Pushing 174 * this up to 16M allows for a sizable kernel to be decompressed below the 175 * compressed load address. 176 * 177 * scriptaddr can be pretty much anywhere that doesn't conflict with something 178 * else. Choosing 32M allows for the compressed kernel to be up to 16M. 179 * 180 * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows 181 * for any boot script to be up to 1M, which is hopefully plenty. 182 */ 183 #define ENV_MEM_LAYOUT_SETTINGS \ 184 "fdt_high=ffffffff\0" \ 185 "initrd_high=ffffffff\0" \ 186 "fdt_addr_r=0x00000100\0" \ 187 "pxefile_addr_r=0x00100000\0" \ 188 "kernel_addr_r=0x01000000\0" \ 189 "scriptaddr=0x02000000\0" \ 190 "ramdisk_addr_r=0x02100000\0" \ 191 192 #define BOOT_TARGET_DEVICES(func) \ 193 func(MMC, mmc, 0) \ 194 func(USB, usb, 0) \ 195 func(PXE, pxe, na) \ 196 func(DHCP, dhcp, na) 197 #include <config_distro_bootcmd.h> 198 199 #define CONFIG_EXTRA_ENV_SETTINGS \ 200 "dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \ 201 ENV_DEVICE_SETTINGS \ 202 ENV_MEM_LAYOUT_SETTINGS \ 203 BOOTENV 204 205 206 #endif 207