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 #ifdef CONFIG_BCM2835 18 #define CONFIG_SYS_CACHELINE_SIZE 32 19 #else 20 #define CONFIG_SYS_CACHELINE_SIZE 64 21 #endif 22 23 /* Architecture, CPU, etc.*/ 24 #define CONFIG_ARCH_CPU_INIT 25 26 /* Use SoC timer for AArch32, but architected timer for AArch64 */ 27 #ifndef CONFIG_ARM64 28 #define CONFIG_SYS_TIMER_RATE 1000000 29 #define CONFIG_SYS_TIMER_COUNTER \ 30 (&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo) 31 #endif 32 33 /* 34 * 2835 is a SKU in a series for which the 2708 is the first or primary SoC, 35 * so 2708 has historically been used rather than a dedicated 2835 ID. 36 * 37 * We don't define a machine type for bcm2709/bcm2836 since the RPi Foundation 38 * chose to use someone else's previously registered machine ID (3139, MX51_GGC) 39 * rather than obtaining a valid ID:-/ 40 * 41 * For the bcm2837, hopefully a machine type is not needed, since everything 42 * is DT. 43 */ 44 #ifdef CONFIG_BCM2835 45 #define CONFIG_MACH_TYPE MACH_TYPE_BCM2708 46 #endif 47 48 /* Memory layout */ 49 #define CONFIG_NR_DRAM_BANKS 1 50 #define CONFIG_SYS_SDRAM_BASE 0x00000000 51 #ifdef CONFIG_ARM64 52 #define CONFIG_SYS_TEXT_BASE 0x00080000 53 #else 54 #define CONFIG_SYS_TEXT_BASE 0x00008000 55 #endif 56 #define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE 57 /* 58 * The board really has 256M. However, the VC (VideoCore co-processor) shares 59 * the RAM, and uses a configurable portion at the top. We tell U-Boot that a 60 * smaller amount of RAM is present in order to avoid stomping on the area 61 * the VC uses. 62 */ 63 #define CONFIG_SYS_SDRAM_SIZE SZ_128M 64 #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \ 65 CONFIG_SYS_SDRAM_SIZE - \ 66 GENERATED_GBL_DATA_SIZE) 67 #define CONFIG_SYS_MALLOC_LEN SZ_4M 68 #define CONFIG_SYS_MEMTEST_START 0x00100000 69 #define CONFIG_SYS_MEMTEST_END 0x00200000 70 #define CONFIG_LOADADDR 0x00200000 71 72 /* Flash */ 73 #define CONFIG_SYS_NO_FLASH 74 75 /* Devices */ 76 /* GPIO */ 77 #define CONFIG_BCM2835_GPIO 78 /* LCD */ 79 #define CONFIG_LCD 80 #define CONFIG_LCD_DT_SIMPLEFB 81 #define LCD_BPP LCD_COLOR16 82 /* 83 * Prevent allocation of RAM for FB; the real FB address is queried 84 * dynamically from the VideoCore co-processor, and comes from RAM 85 * not owned by the ARM CPU. 86 */ 87 #define CONFIG_FB_ADDR 0 88 #define CONFIG_VIDEO_BCM2835 89 #define CONFIG_SYS_WHITE_ON_BLACK 90 #define CONFIG_CONSOLE_SCROLL_LINES 10 91 92 /* SD/MMC configuration */ 93 #define CONFIG_GENERIC_MMC 94 #define CONFIG_MMC 95 #define CONFIG_SDHCI 96 #define CONFIG_MMC_SDHCI_IO_ACCESSORS 97 #define CONFIG_BCM2835_SDHCI 98 99 #ifdef CONFIG_CMD_USB 100 #define CONFIG_USB_DWC2 101 #ifndef CONFIG_BCM2835 102 #define CONFIG_USB_DWC2_REG_ADDR 0x3f980000 103 #else 104 #define CONFIG_USB_DWC2_REG_ADDR 0x20980000 105 #endif 106 #define CONFIG_USB_STORAGE 107 #define CONFIG_USB_HOST_ETHER 108 #define CONFIG_USB_ETHER_SMSC95XX 109 #define CONFIG_MISC_INIT_R 110 #define CONFIG_USB_KEYBOARD 111 #define CONFIG_SYS_USB_EVENT_POLL 112 #define CONFIG_SYS_STDIO_DEREGISTER 113 #endif 114 115 /* Console UART */ 116 #ifdef CONFIG_BCM2837 117 #define CONFIG_BCM283X_MU_SERIAL 118 #else 119 #define CONFIG_PL01X_SERIAL 120 #endif 121 #define CONFIG_CONS_INDEX 0 122 #define CONFIG_BAUDRATE 115200 123 124 /* Console configuration */ 125 #define CONFIG_SYS_CBSIZE 1024 126 #define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \ 127 sizeof(CONFIG_SYS_PROMPT) + 16) 128 129 /* Environment */ 130 #define CONFIG_ENV_SIZE SZ_16K 131 #define CONFIG_ENV_IS_IN_FAT 132 #define FAT_ENV_INTERFACE "mmc" 133 #define FAT_ENV_DEVICE_AND_PART "0:1" 134 #define FAT_ENV_FILE "uboot.env" 135 #define CONFIG_FAT_WRITE 136 #define CONFIG_ENV_VARS_UBOOT_CONFIG 137 #define CONFIG_SYS_LOAD_ADDR 0x1000000 138 #define CONFIG_CONSOLE_MUX 139 #define CONFIG_SYS_CONSOLE_IS_IN_ENV 140 #define CONFIG_PREBOOT "usb start" 141 142 /* Shell */ 143 #define CONFIG_SYS_MAXARGS 16 144 #define CONFIG_COMMAND_HISTORY 145 146 /* Commands */ 147 #define CONFIG_PARTITION_UUIDS 148 #define CONFIG_CMD_PART 149 150 /* ATAGs support for bootm/bootz */ 151 #define CONFIG_SETUP_MEMORY_TAGS 152 #define CONFIG_CMDLINE_TAG 153 #define CONFIG_INITRD_TAG 154 155 #include <config_distro_defaults.h> 156 157 /* Environment */ 158 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG 159 #define ENV_DEVICE_SETTINGS \ 160 "stdin=serial,usbkbd\0" \ 161 "stdout=serial,lcd\0" \ 162 "stderr=serial,lcd\0" 163 164 /* 165 * Memory layout for where various images get loaded by boot scripts: 166 * 167 * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this. 168 * 169 * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's 170 * binary firmware loads a DT to address 0x100, so we choose this address to 171 * match it. This allows custom boot scripts to pass this DT on to Linux 172 * simply by not over-writing the data at this address. When using U-Boot, 173 * U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW 174 * and loads its own DT from disk (triggered by boot.scr or extlinux.conf). 175 * 176 * pxefile_addr_r can be pretty much anywhere that doesn't conflict with 177 * something else. Put it low in memory to avoid conflicts. 178 * 179 * kernel_addr_r must be within the first 128M of RAM in order for the 180 * kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will 181 * decompress itself to 0x8000 after the start of RAM, kernel_addr_r 182 * should not overlap that area, or the kernel will have to copy itself 183 * somewhere else before decompression. Similarly, the address of any other 184 * data passed to the kernel shouldn't overlap the start of RAM. Pushing 185 * this up to 16M allows for a sizable kernel to be decompressed below the 186 * compressed load address. 187 * 188 * scriptaddr can be pretty much anywhere that doesn't conflict with something 189 * else. Choosing 32M allows for the compressed kernel to be up to 16M. 190 * 191 * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows 192 * for any boot script to be up to 1M, which is hopefully plenty. 193 */ 194 #define ENV_MEM_LAYOUT_SETTINGS \ 195 "fdt_high=ffffffff\0" \ 196 "initrd_high=ffffffff\0" \ 197 "fdt_addr_r=0x00000100\0" \ 198 "pxefile_addr_r=0x00100000\0" \ 199 "kernel_addr_r=0x01000000\0" \ 200 "scriptaddr=0x02000000\0" \ 201 "ramdisk_addr_r=0x02100000\0" \ 202 203 #define BOOT_TARGET_DEVICES(func) \ 204 func(MMC, mmc, 0) \ 205 func(USB, usb, 0) \ 206 func(PXE, pxe, na) \ 207 func(DHCP, dhcp, na) 208 #include <config_distro_bootcmd.h> 209 210 #define CONFIG_EXTRA_ENV_SETTINGS \ 211 "dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \ 212 ENV_DEVICE_SETTINGS \ 213 ENV_MEM_LAYOUT_SETTINGS \ 214 BOOTENV 215 216 #define CONFIG_BOOTDELAY 2 217 218 #endif 219