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_MAX_RAM_BANK_SIZE (1024 << 20) /* 1GB */ 18 19 /* Timer information */ 20 #define CONFIG_SYS_PTV 2 /* Divisor: 2^(PTV+1) => 8 */ 21 #define CONFIG_SYS_TIMERBASE 0x48040000 /* Use Timer2 */ 22 #define CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC /* enable 32kHz OSC at bootime */ 23 #define CONFIG_POWER_TPS65217 24 25 #include <asm/arch/omap.h> 26 27 /* NS16550 Configuration */ 28 #define CONFIG_SYS_NS16550_SERIAL 29 #define CONFIG_SYS_NS16550_REG_SIZE (-4) 30 #define CONFIG_SYS_NS16550_CLK 48000000 31 #define CONFIG_SYS_NS16550_COM1 0x44e09000 /* UART0 */ 32 33 /* Network defines */ 34 #define CONFIG_DRIVER_TI_CPSW /* Driver for IP block */ 35 #define CONFIG_MII /* Required in net/eth.c */ 36 #define CONFIG_PHYLIB 37 #define CONFIG_PHY_NATSEMI 38 39 /* 40 * SPL related defines. The Public RAM memory map the ROM defines the 41 * area between 0x402F0400 and 0x4030B800 as a download area and 42 * 0x4030B800 to 0x4030CE00 as a public stack area. The ROM also 43 * supports X-MODEM loading via UART, and we leverage this and then use 44 * Y-MODEM to load u-boot.img, when booted over UART. We must also include 45 * the scratch space that U-Boot uses in SRAM. 46 */ 47 #define CONFIG_SPL_TEXT_BASE 0x402F0400 48 #define CONFIG_SPL_MAX_SIZE (SRAM_SCRATCH_SPACE_ADDR - \ 49 CONFIG_SPL_TEXT_BASE) 50 51 /* 52 * Since SPL did pll and ddr initialization for us, 53 * we don't need to do it twice. 54 */ 55 #if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_NOR_BOOT) 56 #define CONFIG_SKIP_LOWLEVEL_INIT 57 #endif /* !CONFIG_SPL_BUILD, ... */ 58 /* 59 * Our DDR memory always starts at 0x80000000 and U-Boot shall have 60 * relocated itself to higher in memory by the time this value is used. 61 */ 62 #define CONFIG_SYS_LOAD_ADDR 0x80000000 63 /* 64 * ---------------------------------------------------------------------------- 65 * DDR information. We say (for simplicity) that we have 1 bank, 66 * always, even when we have more. We always start at 0x80000000, 67 * and we place the initial stack pointer in our SRAM. 68 */ 69 #define CONFIG_NR_DRAM_BANKS 1 70 #define CONFIG_SYS_SDRAM_BASE 0x80000000 71 #define CONFIG_SYS_INIT_SP_ADDR (NON_SECURE_SRAM_END - \ 72 GENERATED_GBL_DATA_SIZE) 73 74 /* I2C */ 75 #define CONFIG_SYS_I2C 76 #define CONFIG_SYS_OMAP24_I2C_SPEED 100000 77 #define CONFIG_SYS_OMAP24_I2C_SLAVE 1 78 #define CONFIG_SYS_I2C_OMAP24XX 79 /* GPIO */ 80 #define CONFIG_OMAP_GPIO 81 82 /* 83 * Our platforms make use of SPL to initalize the hardware (primarily 84 * memory) enough for full U-Boot to be loaded. We also support Falcon 85 * Mode so that the Linux kernel can be booted directly from SPL 86 * instead, if desired. We make use of the general SPL framework found 87 * under common/spl/. Given our generally common memory map, we set a 88 * number of related defaults and sizes here. 89 */ 90 #define CONFIG_SPL_FRAMEWORK 91 /* 92 * Place the image at the start of the ROM defined image space. 93 * We limit our size to the ROM-defined downloaded image area, and use the 94 * rest of the space for stack. We load U-Boot itself into memory at 95 * 0x80800000 for legacy reasons (to not conflict with older SPLs). We 96 * have our BSS be placed 1MiB after this, to allow for the default 97 * Linux kernel address of 0x80008000 to work, in the Falcon Mode case. 98 * We have the SPL malloc pool at the end of the BSS area. 99 * 100 * ---------------------------------------------------------------------------- 101 */ 102 #undef CONFIG_SYS_TEXT_BASE 103 #define CONFIG_SYS_TEXT_BASE 0x80800000 104 #define CONFIG_SPL_BSS_START_ADDR 0x80A00000 105 #define CONFIG_SPL_BSS_MAX_SIZE 0x80000 /* 512 KB */ 106 #define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SPL_BSS_START_ADDR + \ 107 CONFIG_SPL_BSS_MAX_SIZE) 108 #define CONFIG_SYS_SPL_MALLOC_SIZE CONFIG_SYS_MALLOC_LEN 109 110 /* General parts of the framework, required. */ 111 #define CONFIG_SPL_BOARD_INIT 112 #define CONFIG_SPL_LDSCRIPT "arch/arm/mach-omap2/am33xx/u-boot-spl.lds" 113 114 #endif /* ! __BUR_AM335X_COMMON_H__ */ 115