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_MAX_RAM_BANK_SIZE (1024 << 20) /* 1GB */ 16 17 /* Timer information */ 18 #define CONFIG_SYS_PTV 2 /* Divisor: 2^(PTV+1) => 8 */ 19 #define CONFIG_SYS_TIMERBASE 0x48040000 /* Use Timer2 */ 20 #define CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC /* enable 32kHz OSC at bootime */ 21 #define CONFIG_POWER_TPS65217 22 23 #include <asm/arch/omap.h> 24 25 /* NS16550 Configuration */ 26 #define CONFIG_SYS_NS16550_SERIAL 27 #define CONFIG_SYS_NS16550_REG_SIZE (-4) 28 #define CONFIG_SYS_NS16550_CLK 48000000 29 #define CONFIG_SYS_NS16550_COM1 0x44e09000 /* UART0 */ 30 31 /* Network defines */ 32 #define CONFIG_DRIVER_TI_CPSW /* Driver for IP block */ 33 #define CONFIG_MII /* Required in net/eth.c */ 34 #define CONFIG_PHYLIB 35 #define CONFIG_PHY_NATSEMI 36 37 /* 38 * SPL related defines. The Public RAM memory map the ROM defines the 39 * area between 0x402F0400 and 0x4030B800 as a download area and 40 * 0x4030B800 to 0x4030CE00 as a public stack area. The ROM also 41 * supports X-MODEM loading via UART, and we leverage this and then use 42 * Y-MODEM to load u-boot.img, when booted over UART. We must also include 43 * the scratch space that U-Boot uses in SRAM. 44 */ 45 #define CONFIG_SPL_TEXT_BASE 0x402F0400 46 #define CONFIG_SPL_MAX_SIZE (SRAM_SCRATCH_SPACE_ADDR - \ 47 CONFIG_SPL_TEXT_BASE) 48 49 /* 50 * Since SPL did pll and ddr initialization for us, 51 * we don't need to do it twice. 52 */ 53 #if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_NOR_BOOT) 54 #define CONFIG_SKIP_LOWLEVEL_INIT 55 #endif /* !CONFIG_SPL_BUILD, ... */ 56 /* 57 * Our DDR memory always starts at 0x80000000 and U-Boot shall have 58 * relocated itself to higher in memory by the time this value is used. 59 */ 60 #define CONFIG_SYS_LOAD_ADDR 0x80000000 61 /* 62 * ---------------------------------------------------------------------------- 63 * DDR information. We say (for simplicity) that we have 1 bank, 64 * always, even when we have more. We always start at 0x80000000, 65 * and we place the initial stack pointer in our SRAM. 66 */ 67 #define CONFIG_NR_DRAM_BANKS 1 68 #define CONFIG_SYS_SDRAM_BASE 0x80000000 69 #define CONFIG_SYS_INIT_SP_ADDR (NON_SECURE_SRAM_END - \ 70 GENERATED_GBL_DATA_SIZE) 71 72 /* I2C */ 73 #define CONFIG_SYS_I2C 74 #define CONFIG_SYS_OMAP24_I2C_SPEED 100000 75 #define CONFIG_SYS_OMAP24_I2C_SLAVE 1 76 #define CONFIG_SYS_I2C_OMAP24XX 77 78 /* 79 * Our platforms make use of SPL to initalize the hardware (primarily 80 * memory) enough for full U-Boot to be loaded. We also support Falcon 81 * Mode so that the Linux kernel can be booted directly from SPL 82 * instead, if desired. We make use of the general SPL framework found 83 * under common/spl/. Given our generally common memory map, we set a 84 * number of related defaults and sizes here. 85 */ 86 #define CONFIG_SPL_FRAMEWORK 87 /* 88 * Place the image at the start of the ROM defined image space. 89 * We limit our size to the ROM-defined downloaded image area, and use the 90 * rest of the space for stack. We load U-Boot itself into memory at 91 * 0x80800000 for legacy reasons (to not conflict with older SPLs). We 92 * have our BSS be placed 1MiB after this, to allow for the default 93 * Linux kernel address of 0x80008000 to work, in the Falcon Mode case. 94 * We have the SPL malloc pool at the end of the BSS area. 95 * 96 * ---------------------------------------------------------------------------- 97 */ 98 #undef CONFIG_SYS_TEXT_BASE 99 #define CONFIG_SYS_TEXT_BASE 0x80800000 100 #define CONFIG_SPL_BSS_START_ADDR 0x80A00000 101 #define CONFIG_SPL_BSS_MAX_SIZE 0x80000 /* 512 KB */ 102 #define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SPL_BSS_START_ADDR + \ 103 CONFIG_SPL_BSS_MAX_SIZE) 104 #define CONFIG_SYS_SPL_MALLOC_SIZE CONFIG_SYS_MALLOC_LEN 105 106 /* General parts of the framework, required. */ 107 #define CONFIG_SPL_LDSCRIPT "arch/arm/mach-omap2/u-boot-spl.lds" 108 109 #endif /* ! __BUR_AM335X_COMMON_H__ */ 110