1 /* 2 * bur_am335x_common.h 3 * 4 * common parts used by B&R AM335x based boards 5 * 6 * Copyright (C) 2016 Hannes Schmelzer <oe5hpm@oevsv.at> - 7 * Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com 8 * 9 * SPDX-License-Identifier: GPL-2.0+ 10 */ 11 12 #ifndef __BUR_AM335X_COMMON_H__ 13 #define __BUR_AM335X_COMMON_H__ 14 /* ------------------------------------------------------------------------- */ 15 #define CONFIG_AM33XX 16 #define CONFIG_OMAP 17 #define CONFIG_OMAP_COMMON 18 #define CONFIG_MAX_RAM_BANK_SIZE (1024 << 20) /* 1GB */ 19 20 /* Timer information */ 21 #define CONFIG_SYS_PTV 2 /* Divisor: 2^(PTV+1) => 8 */ 22 #define CONFIG_SYS_TIMERBASE 0x48040000 /* Use Timer2 */ 23 #define CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC /* enable 32kHz OSC at bootime */ 24 #define CONFIG_SPL_POWER_SUPPORT 25 #define CONFIG_POWER_TPS65217 26 27 #define CONFIG_SYS_NO_FLASH /* have no NOR-flash */ 28 29 #include <asm/arch/omap.h> 30 31 /* NS16550 Configuration */ 32 #define CONFIG_SYS_NS16550_SERIAL 33 #define CONFIG_SYS_NS16550_REG_SIZE (-4) 34 #define CONFIG_SYS_NS16550_CLK 48000000 35 #define CONFIG_SYS_NS16550_COM1 0x44e09000 /* UART0 */ 36 #define CONFIG_BAUDRATE 115200 37 38 /* Network defines */ 39 #define CONFIG_DRIVER_TI_CPSW /* Driver for IP block */ 40 #define CONFIG_MII /* Required in net/eth.c */ 41 #define CONFIG_PHYLIB 42 #define CONFIG_PHY_NATSEMI 43 44 /* 45 * SPL related defines. The Public RAM memory map the ROM defines the 46 * area between 0x402F0400 and 0x4030B800 as a download area and 47 * 0x4030B800 to 0x4030CE00 as a public stack area. The ROM also 48 * supports X-MODEM loading via UART, and we leverage this and then use 49 * Y-MODEM to load u-boot.img, when booted over UART. We must also include 50 * the scratch space that U-Boot uses in SRAM. 51 */ 52 #define CONFIG_SPL_TEXT_BASE 0x402F0400 53 #define CONFIG_SPL_MAX_SIZE (SRAM_SCRATCH_SPACE_ADDR - \ 54 CONFIG_SPL_TEXT_BASE) 55 56 /* 57 * Since SPL did pll and ddr initialization for us, 58 * we don't need to do it twice. 59 */ 60 #if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_NOR_BOOT) 61 #define CONFIG_SKIP_LOWLEVEL_INIT 62 #endif /* !CONFIG_SPL_BUILD, ... */ 63 /* 64 * Our DDR memory always starts at 0x80000000 and U-Boot shall have 65 * relocated itself to higher in memory by the time this value is used. 66 */ 67 #define CONFIG_SYS_LOAD_ADDR 0x80000000 68 /* 69 * ---------------------------------------------------------------------------- 70 * DDR information. We say (for simplicity) that we have 1 bank, 71 * always, even when we have more. We always start at 0x80000000, 72 * and we place the initial stack pointer in our SRAM. 73 */ 74 #define CONFIG_NR_DRAM_BANKS 1 75 #define CONFIG_SYS_SDRAM_BASE 0x80000000 76 #define CONFIG_SYS_INIT_SP_ADDR (NON_SECURE_SRAM_END - \ 77 GENERATED_GBL_DATA_SIZE) 78 79 /* I2C */ 80 #define CONFIG_SYS_I2C 81 #define CONFIG_SYS_OMAP24_I2C_SPEED 100000 82 #define CONFIG_SYS_OMAP24_I2C_SLAVE 1 83 #define CONFIG_SYS_I2C_OMAP24XX 84 /* GPIO */ 85 #define CONFIG_OMAP_GPIO 86 87 /* 88 * Our platforms make use of SPL to initalize the hardware (primarily 89 * memory) enough for full U-Boot to be loaded. We also support Falcon 90 * Mode so that the Linux kernel can be booted directly from SPL 91 * instead, if desired. We make use of the general SPL framework found 92 * under common/spl/. Given our generally common memory map, we set a 93 * number of related defaults and sizes here. 94 */ 95 #define CONFIG_SPL_FRAMEWORK 96 /* 97 * Place the image at the start of the ROM defined image space. 98 * We limit our size to the ROM-defined downloaded image area, and use the 99 * rest of the space for stack. We load U-Boot itself into memory at 100 * 0x80800000 for legacy reasons (to not conflict with older SPLs). We 101 * have our BSS be placed 1MiB after this, to allow for the default 102 * Linux kernel address of 0x80008000 to work, in the Falcon Mode case. 103 * We have the SPL malloc pool at the end of the BSS area. 104 * 105 * ---------------------------------------------------------------------------- 106 */ 107 #undef CONFIG_SYS_TEXT_BASE 108 #define CONFIG_SYS_TEXT_BASE 0x80800000 109 #define CONFIG_SPL_BSS_START_ADDR 0x80A00000 110 #define CONFIG_SPL_BSS_MAX_SIZE 0x80000 /* 512 KB */ 111 #define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SPL_BSS_START_ADDR + \ 112 CONFIG_SPL_BSS_MAX_SIZE) 113 #define CONFIG_SYS_SPL_MALLOC_SIZE CONFIG_SYS_MALLOC_LEN 114 115 /* General parts of the framework, required. */ 116 #define CONFIG_SPL_SERIAL_SUPPORT 117 #define CONFIG_SPL_BOARD_INIT 118 #define CONFIG_SPL_YMODEM_SUPPORT 119 #define CONFIG_SPL_LDSCRIPT "$(CPUDIR)/am33xx/u-boot-spl.lds" 120 121 #endif /* ! __BUR_AM335X_COMMON_H__ */ 122