4 * common parts used by B&R AM335x based boards
6 * Copyright (C) 2016 Hannes Schmelzer <oe5hpm@oevsv.at> -
7 * Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com
9 * SPDX-License-Identifier: GPL-2.0+
12 #ifndef __BUR_AM335X_COMMON_H__
13 #define __BUR_AM335X_COMMON_H__
14 /* ------------------------------------------------------------------------- */
15 #define CONFIG_MAX_RAM_BANK_SIZE (1024 << 20) /* 1GB */
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_POWER_TPS65217
22 #include <asm/arch/omap.h>
24 /* NS16550 Configuration */
25 #define CONFIG_SYS_NS16550_SERIAL
26 #define CONFIG_SYS_NS16550_REG_SIZE (-4)
27 #define CONFIG_SYS_NS16550_CLK 48000000
28 #define CONFIG_SYS_NS16550_COM1 0x44e09000 /* UART0 */
31 #define CONFIG_MII /* Required in net/eth.c */
32 #define CONFIG_PHY_NATSEMI
35 * SPL related defines. The Public RAM memory map the ROM defines the
36 * area between 0x402F0400 and 0x4030B800 as a download area and
37 * 0x4030B800 to 0x4030CE00 as a public stack area. The ROM also
38 * supports X-MODEM loading via UART, and we leverage this and then use
39 * Y-MODEM to load u-boot.img, when booted over UART. We must also include
40 * the scratch space that U-Boot uses in SRAM.
42 #define CONFIG_SPL_TEXT_BASE 0x402F0400
43 #define CONFIG_SPL_MAX_SIZE (SRAM_SCRATCH_SPACE_ADDR - \
47 * Since SPL did pll and ddr initialization for us,
48 * we don't need to do it twice.
50 #if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_NOR_BOOT)
51 #define CONFIG_SKIP_LOWLEVEL_INIT
52 #endif /* !CONFIG_SPL_BUILD, ... */
54 * Our DDR memory always starts at 0x80000000 and U-Boot shall have
55 * relocated itself to higher in memory by the time this value is used.
57 #define CONFIG_SYS_LOAD_ADDR 0x80000000
59 * ----------------------------------------------------------------------------
60 * DDR information. We say (for simplicity) that we have 1 bank,
61 * always, even when we have more. We always start at 0x80000000,
62 * and we place the initial stack pointer in our SRAM.
64 #define CONFIG_NR_DRAM_BANKS 1
65 #define CONFIG_SYS_SDRAM_BASE 0x80000000
66 #define CONFIG_SYS_INIT_SP_ADDR (NON_SECURE_SRAM_END - \
67 GENERATED_GBL_DATA_SIZE)
70 #define CONFIG_SYS_I2C
73 * Our platforms make use of SPL to initalize the hardware (primarily
74 * memory) enough for full U-Boot to be loaded. We also support Falcon
75 * Mode so that the Linux kernel can be booted directly from SPL
76 * instead, if desired. We make use of the general SPL framework found
77 * under common/spl/. Given our generally common memory map, we set a
78 * number of related defaults and sizes here.
81 * Place the image at the start of the ROM defined image space.
82 * We limit our size to the ROM-defined downloaded image area, and use the
83 * rest of the space for stack. We load U-Boot itself into memory at
84 * 0x80800000 for legacy reasons (to not conflict with older SPLs). We
85 * have our BSS be placed 1MiB after this, to allow for the default
86 * Linux kernel address of 0x80008000 to work, in the Falcon Mode case.
87 * We have the SPL malloc pool at the end of the BSS area.
89 * ----------------------------------------------------------------------------
91 #define CONFIG_SPL_BSS_START_ADDR 0x80A00000
92 #define CONFIG_SPL_BSS_MAX_SIZE 0x80000 /* 512 KB */
93 #define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SPL_BSS_START_ADDR + \
94 CONFIG_SPL_BSS_MAX_SIZE)
95 #define CONFIG_SYS_SPL_MALLOC_SIZE CONFIG_SYS_MALLOC_LEN
97 /* General parts of the framework, required. */
99 #endif /* ! __BUR_AM335X_COMMON_H__ */