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