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Diffstat (limited to 'include/configs/bur_am335x_common.h')
| -rw-r--r-- | include/configs/bur_am335x_common.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/include/configs/bur_am335x_common.h b/include/configs/bur_am335x_common.h new file mode 100644 index 0000000..42e3e56 --- /dev/null +++ b/include/configs/bur_am335x_common.h @@ -0,0 +1,96 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * bur_am335x_common.h + * + * common parts used by B&R AM335x based boards + * + * Copyright (C) 2016 Hannes Schmelzer <oe5hpm@oevsv.at> - + * Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com + */ + +#ifndef __BUR_AM335X_COMMON_H__ +#define __BUR_AM335X_COMMON_H__ +/* ------------------------------------------------------------------------- */ + +/* legacy #defines for non DM bur-board */ +#ifndef CONFIG_DM +#define CONFIG_SYS_NS16550_SERIAL +#define CONFIG_SYS_NS16550_REG_SIZE (-4) +#define CONFIG_SYS_NS16550_CLK (48000000) +#define CONFIG_SYS_NS16550_COM1 0x44e09000 + +#define CONFIG_I2C +#define CONFIG_SYS_I2C + +#endif /* CONFIG_DM */ + +#define CONFIG_MAX_RAM_BANK_SIZE (1024 << 20) /* 1GB */ + +/* Timer information */ +#define CONFIG_SYS_PTV 2 /* Divisor: 2^(PTV+1) => 8 */ +#define CONFIG_SYS_TIMERBASE 0x48040000 /* Use Timer2 */ +#define CONFIG_POWER_TPS65217 + +#include <asm/arch/omap.h> + +/* + * SPL related defines. The Public RAM memory map the ROM defines the + * area between 0x402F0400 and 0x4030B800 as a download area and + * 0x4030B800 to 0x4030CE00 as a public stack area. The ROM also + * supports X-MODEM loading via UART, and we leverage this and then use + * Y-MODEM to load u-boot.img, when booted over UART. We must also include + * the scratch space that U-Boot uses in SRAM. + */ +#define CONFIG_SPL_MAX_SIZE (SRAM_SCRATCH_SPACE_ADDR - \ + CONFIG_SPL_TEXT_BASE) + +/* + * Since SPL did pll and ddr initialization for us, + * we don't need to do it twice. + */ +#if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_NOR_BOOT) +#define CONFIG_SKIP_LOWLEVEL_INIT +#endif /* !CONFIG_SPL_BUILD, ... */ +/* + * Our DDR memory always starts at 0x80000000 and U-Boot shall have + * relocated itself to higher in memory by the time this value is used. + */ +#define CONFIG_SYS_LOAD_ADDR 0x80000000 +/* + * ---------------------------------------------------------------------------- + * DDR information. We say (for simplicity) that we have 1 bank, + * always, even when we have more. We always start at 0x80000000, + * and we place the initial stack pointer in our SRAM. + */ +#define CONFIG_SYS_SDRAM_BASE 0x80000000 +#define CONFIG_SYS_INIT_SP_ADDR (NON_SECURE_SRAM_END - \ + GENERATED_GBL_DATA_SIZE) + +/* + * Our platforms make use of SPL to initalize the hardware (primarily + * memory) enough for full U-Boot to be loaded. We also support Falcon + * Mode so that the Linux kernel can be booted directly from SPL + * instead, if desired. We make use of the general SPL framework found + * under common/spl/. Given our generally common memory map, we set a + * number of related defaults and sizes here. + */ +/* + * Place the image at the start of the ROM defined image space. + * We limit our size to the ROM-defined downloaded image area, and use the + * rest of the space for stack. We load U-Boot itself into memory at + * 0x80800000 for legacy reasons (to not conflict with older SPLs). We + * have our BSS be placed 1MiB after this, to allow for the default + * Linux kernel address of 0x80008000 to work, in the Falcon Mode case. + * We have the SPL malloc pool at the end of the BSS area. + * + * ---------------------------------------------------------------------------- + */ +#define CONFIG_SPL_BSS_START_ADDR 0x80A00000 +#define CONFIG_SPL_BSS_MAX_SIZE 0x80000 /* 512 KB */ +#define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SPL_BSS_START_ADDR + \ + CONFIG_SPL_BSS_MAX_SIZE) +#define CONFIG_SYS_SPL_MALLOC_SIZE CONFIG_SYS_MALLOC_LEN + +/* General parts of the framework, required. */ + +#endif /* ! __BUR_AM335X_COMMON_H__ */ |