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 #define CONFIG_SYS_NO_FLASH		/* have no NOR-flash */
26 
27 #include <asm/arch/omap.h>
28 
29 /* NS16550 Configuration */
30 #define CONFIG_SYS_NS16550_SERIAL
31 #define CONFIG_SYS_NS16550_REG_SIZE	(-4)
32 #define CONFIG_SYS_NS16550_CLK		48000000
33 #define CONFIG_SYS_NS16550_COM1		0x44e09000	/* UART0 */
34 #define CONFIG_BAUDRATE			115200
35 
36 /* Network defines */
37 #define CONFIG_DRIVER_TI_CPSW		/* Driver for IP block */
38 #define CONFIG_MII			/* Required in net/eth.c */
39 #define CONFIG_PHYLIB
40 #define CONFIG_PHY_NATSEMI
41 
42 /*
43  * SPL related defines.  The Public RAM memory map the ROM defines the
44  * area between 0x402F0400 and 0x4030B800 as a download area and
45  * 0x4030B800 to 0x4030CE00 as a public stack area.  The ROM also
46  * supports X-MODEM loading via UART, and we leverage this and then use
47  * Y-MODEM to load u-boot.img, when booted over UART.  We must also include
48  * the scratch space that U-Boot uses in SRAM.
49  */
50 #define CONFIG_SPL_TEXT_BASE		0x402F0400
51 #define CONFIG_SPL_MAX_SIZE		(SRAM_SCRATCH_SPACE_ADDR - \
52 					 CONFIG_SPL_TEXT_BASE)
53 
54 /*
55  * Since SPL did pll and ddr initialization for us,
56  * we don't need to do it twice.
57  */
58 #if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_NOR_BOOT)
59 #define CONFIG_SKIP_LOWLEVEL_INIT
60 #endif /* !CONFIG_SPL_BUILD, ... */
61 /*
62  * Our DDR memory always starts at 0x80000000 and U-Boot shall have
63  * relocated itself to higher in memory by the time this value is used.
64  */
65 #define CONFIG_SYS_LOAD_ADDR		0x80000000
66 /*
67  * ----------------------------------------------------------------------------
68  * DDR information.  We say (for simplicity) that we have 1 bank,
69  * always, even when we have more.  We always start at 0x80000000,
70  * and we place the initial stack pointer in our SRAM.
71  */
72 #define CONFIG_NR_DRAM_BANKS		1
73 #define CONFIG_SYS_SDRAM_BASE		0x80000000
74 #define CONFIG_SYS_INIT_SP_ADDR		(NON_SECURE_SRAM_END - \
75 					GENERATED_GBL_DATA_SIZE)
76 
77 /* I2C */
78 #define CONFIG_SYS_I2C
79 #define CONFIG_SYS_OMAP24_I2C_SPEED	100000
80 #define CONFIG_SYS_OMAP24_I2C_SLAVE	1
81 #define CONFIG_SYS_I2C_OMAP24XX
82 /* GPIO */
83 #define CONFIG_OMAP_GPIO
84 
85 /*
86  * Our platforms make use of SPL to initalize the hardware (primarily
87  * memory) enough for full U-Boot to be loaded.  We also support Falcon
88  * Mode so that the Linux kernel can be booted directly from SPL
89  * instead, if desired.  We make use of the general SPL framework found
90  * under common/spl/.  Given our generally common memory map, we set a
91  * number of related defaults and sizes here.
92  */
93 #define CONFIG_SPL_FRAMEWORK
94 /*
95  * Place the image at the start of the ROM defined image space.
96  * We limit our size to the ROM-defined downloaded image area, and use the
97  * rest of the space for stack.  We load U-Boot itself into memory at
98  * 0x80800000 for legacy reasons (to not conflict with older SPLs).  We
99  * have our BSS be placed 1MiB after this, to allow for the default
100  * Linux kernel address of 0x80008000 to work, in the Falcon Mode case.
101  * We have the SPL malloc pool at the end of the BSS area.
102  *
103  * ----------------------------------------------------------------------------
104  */
105 #undef  CONFIG_SYS_TEXT_BASE
106 #define CONFIG_SYS_TEXT_BASE		0x80800000
107 #define CONFIG_SPL_BSS_START_ADDR	0x80A00000
108 #define CONFIG_SPL_BSS_MAX_SIZE		0x80000		/* 512 KB */
109 #define CONFIG_SYS_SPL_MALLOC_START	(CONFIG_SPL_BSS_START_ADDR + \
110 					CONFIG_SPL_BSS_MAX_SIZE)
111 #define CONFIG_SYS_SPL_MALLOC_SIZE	CONFIG_SYS_MALLOC_LEN
112 
113 /* General parts of the framework, required. */
114 #define CONFIG_SPL_BOARD_INIT
115 #define CONFIG_SPL_LDSCRIPT		"arch/arm/mach-omap2/am33xx/u-boot-spl.lds"
116 
117 #endif	/* ! __BUR_AM335X_COMMON_H__ */
118