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_MAX_RAM_BANK_SIZE (1024 << 20) /* 1GB */ 17 18 /* Timer information */ 19 #define CONFIG_SYS_PTV 2 /* Divisor: 2^(PTV+1) => 8 */ 20 #define CONFIG_SYS_TIMERBASE 0x48040000 /* Use Timer2 */ 21 #define CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC /* enable 32kHz OSC at bootime */ 22 #define CONFIG_POWER_TPS65217 23 24 #include <asm/arch/omap.h> 25 26 /* NS16550 Configuration */ 27 #define CONFIG_SYS_NS16550_SERIAL 28 #define CONFIG_SYS_NS16550_REG_SIZE (-4) 29 #define CONFIG_SYS_NS16550_CLK 48000000 30 #define CONFIG_SYS_NS16550_COM1 0x44e09000 /* UART0 */ 31 32 /* Network defines */ 33 #define CONFIG_DRIVER_TI_CPSW /* Driver for IP block */ 34 #define CONFIG_MII /* Required in net/eth.c */ 35 #define CONFIG_PHYLIB 36 #define CONFIG_PHY_NATSEMI 37 38 /* 39 * SPL related defines. The Public RAM memory map the ROM defines the 40 * area between 0x402F0400 and 0x4030B800 as a download area and 41 * 0x4030B800 to 0x4030CE00 as a public stack area. The ROM also 42 * supports X-MODEM loading via UART, and we leverage this and then use 43 * Y-MODEM to load u-boot.img, when booted over UART. We must also include 44 * the scratch space that U-Boot uses in SRAM. 45 */ 46 #define CONFIG_SPL_TEXT_BASE 0x402F0400 47 #define CONFIG_SPL_MAX_SIZE (SRAM_SCRATCH_SPACE_ADDR - \ 48 CONFIG_SPL_TEXT_BASE) 49 50 /* 51 * Since SPL did pll and ddr initialization for us, 52 * we don't need to do it twice. 53 */ 54 #if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_NOR_BOOT) 55 #define CONFIG_SKIP_LOWLEVEL_INIT 56 #endif /* !CONFIG_SPL_BUILD, ... */ 57 /* 58 * Our DDR memory always starts at 0x80000000 and U-Boot shall have 59 * relocated itself to higher in memory by the time this value is used. 60 */ 61 #define CONFIG_SYS_LOAD_ADDR 0x80000000 62 /* 63 * ---------------------------------------------------------------------------- 64 * DDR information. We say (for simplicity) that we have 1 bank, 65 * always, even when we have more. We always start at 0x80000000, 66 * and we place the initial stack pointer in our SRAM. 67 */ 68 #define CONFIG_NR_DRAM_BANKS 1 69 #define CONFIG_SYS_SDRAM_BASE 0x80000000 70 #define CONFIG_SYS_INIT_SP_ADDR (NON_SECURE_SRAM_END - \ 71 GENERATED_GBL_DATA_SIZE) 72 73 /* I2C */ 74 #define CONFIG_SYS_I2C 75 #define CONFIG_SYS_OMAP24_I2C_SPEED 100000 76 #define CONFIG_SYS_OMAP24_I2C_SLAVE 1 77 #define CONFIG_SYS_I2C_OMAP24XX 78 79 /* 80 * Our platforms make use of SPL to initalize the hardware (primarily 81 * memory) enough for full U-Boot to be loaded. We also support Falcon 82 * Mode so that the Linux kernel can be booted directly from SPL 83 * instead, if desired. We make use of the general SPL framework found 84 * under common/spl/. Given our generally common memory map, we set a 85 * number of related defaults and sizes here. 86 */ 87 #define CONFIG_SPL_FRAMEWORK 88 /* 89 * Place the image at the start of the ROM defined image space. 90 * We limit our size to the ROM-defined downloaded image area, and use the 91 * rest of the space for stack. We load U-Boot itself into memory at 92 * 0x80800000 for legacy reasons (to not conflict with older SPLs). We 93 * have our BSS be placed 1MiB after this, to allow for the default 94 * Linux kernel address of 0x80008000 to work, in the Falcon Mode case. 95 * We have the SPL malloc pool at the end of the BSS area. 96 * 97 * ---------------------------------------------------------------------------- 98 */ 99 #undef CONFIG_SYS_TEXT_BASE 100 #define CONFIG_SYS_TEXT_BASE 0x80800000 101 #define CONFIG_SPL_BSS_START_ADDR 0x80A00000 102 #define CONFIG_SPL_BSS_MAX_SIZE 0x80000 /* 512 KB */ 103 #define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SPL_BSS_START_ADDR + \ 104 CONFIG_SPL_BSS_MAX_SIZE) 105 #define CONFIG_SYS_SPL_MALLOC_SIZE CONFIG_SYS_MALLOC_LEN 106 107 /* General parts of the framework, required. */ 108 #define CONFIG_SPL_BOARD_INIT 109 #define CONFIG_SPL_LDSCRIPT "arch/arm/mach-omap2/u-boot-spl.lds" 110 111 #endif /* ! __BUR_AM335X_COMMON_H__ */ 112