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_OMAP_COMMON
18 #define CONFIG_SYS_CACHELINE_SIZE	64
19 #define CONFIG_MAX_RAM_BANK_SIZE	(1024 << 20)	/* 1GB */
20 
21 /* Timer information */
22 #define CONFIG_SYS_PTV			2	/* Divisor: 2^(PTV+1) => 8 */
23 #define CONFIG_SYS_TIMERBASE		0x48040000	/* Use Timer2 */
24 #define CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC	/* enable 32kHz OSC at bootime */
25 #define CONFIG_SPL_POWER_SUPPORT
26 #define CONFIG_POWER_TPS65217
27 
28 #define CONFIG_SYS_NO_FLASH		/* have no NOR-flash */
29 
30 #include <asm/arch/omap.h>
31 
32 /* NS16550 Configuration */
33 #define CONFIG_SYS_NS16550_SERIAL
34 #define CONFIG_SYS_NS16550_REG_SIZE	(-4)
35 #define CONFIG_SYS_NS16550_CLK		48000000
36 #define CONFIG_SYS_NS16550_COM1		0x44e09000	/* UART0 */
37 #define CONFIG_BAUDRATE			115200
38 
39 /* Network defines */
40 #define CONFIG_DRIVER_TI_CPSW		/* Driver for IP block */
41 #define CONFIG_MII			/* Required in net/eth.c */
42 #define CONFIG_PHYLIB
43 #define CONFIG_PHY_NATSEMI
44 
45 /*
46  * SPL related defines.  The Public RAM memory map the ROM defines the
47  * area between 0x402F0400 and 0x4030B800 as a download area and
48  * 0x4030B800 to 0x4030CE00 as a public stack area.  The ROM also
49  * supports X-MODEM loading via UART, and we leverage this and then use
50  * Y-MODEM to load u-boot.img, when booted over UART.
51  */
52 #define CONFIG_SPL_TEXT_BASE		0x402F0400
53 #define CONFIG_SPL_MAX_SIZE		(0x4030B800 - CONFIG_SPL_TEXT_BASE)
54 
55 /*
56  * Since SPL did pll and ddr initialization for us,
57  * we don't need to do it twice.
58  */
59 #if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_NOR_BOOT)
60 #define CONFIG_SKIP_LOWLEVEL_INIT
61 #endif /* !CONFIG_SPL_BUILD, ... */
62 /*
63  * Our DDR memory always starts at 0x80000000 and U-Boot shall have
64  * relocated itself to higher in memory by the time this value is used.
65  */
66 #define CONFIG_SYS_LOAD_ADDR		0x80000000
67 /*
68  * ----------------------------------------------------------------------------
69  * DDR information.  We say (for simplicity) that we have 1 bank,
70  * always, even when we have more.  We always start at 0x80000000,
71  * and we place the initial stack pointer in our SRAM.
72  */
73 #define CONFIG_NR_DRAM_BANKS		1
74 #define CONFIG_SYS_SDRAM_BASE		0x80000000
75 #define CONFIG_SYS_INIT_SP_ADDR		(NON_SECURE_SRAM_END - \
76 					GENERATED_GBL_DATA_SIZE)
77 
78 /* I2C */
79 #define CONFIG_SYS_I2C
80 #define CONFIG_SYS_OMAP24_I2C_SPEED	100000
81 #define CONFIG_SYS_OMAP24_I2C_SLAVE	1
82 #define CONFIG_SYS_I2C_OMAP24XX
83 /* GPIO */
84 #define CONFIG_OMAP_GPIO
85 
86 /*
87  * Our platforms make use of SPL to initalize the hardware (primarily
88  * memory) enough for full U-Boot to be loaded.  We also support Falcon
89  * Mode so that the Linux kernel can be booted directly from SPL
90  * instead, if desired.  We make use of the general SPL framework found
91  * under common/spl/.  Given our generally common memory map, we set a
92  * number of related defaults and sizes here.
93  */
94 #define CONFIG_SPL_FRAMEWORK
95 /*
96  * Place the image at the start of the ROM defined image space.
97  * We limit our size to the ROM-defined downloaded image area, and use the
98  * rest of the space for stack.  We load U-Boot itself into memory at
99  * 0x80800000 for legacy reasons (to not conflict with older SPLs).  We
100  * have our BSS be placed 1MiB after this, to allow for the default
101  * Linux kernel address of 0x80008000 to work, in the Falcon Mode case.
102  * We have the SPL malloc pool at the end of the BSS area.
103  *
104  * ----------------------------------------------------------------------------
105  */
106 #undef  CONFIG_SYS_TEXT_BASE
107 #define CONFIG_SYS_TEXT_BASE		0x80800000
108 #define CONFIG_SPL_BSS_START_ADDR	0x80A00000
109 #define CONFIG_SPL_BSS_MAX_SIZE		0x80000		/* 512 KB */
110 #define CONFIG_SYS_SPL_MALLOC_START	(CONFIG_SPL_BSS_START_ADDR + \
111 					CONFIG_SPL_BSS_MAX_SIZE)
112 #define CONFIG_SYS_SPL_MALLOC_SIZE	CONFIG_SYS_MALLOC_LEN
113 
114 /* General parts of the framework, required. */
115 #define CONFIG_SPL_I2C_SUPPORT
116 #define CONFIG_SPL_LIBCOMMON_SUPPORT
117 #define CONFIG_SPL_LIBGENERIC_SUPPORT
118 #define CONFIG_SPL_SERIAL_SUPPORT
119 #define CONFIG_SPL_BOARD_INIT
120 #define CONFIG_SPL_YMODEM_SUPPORT
121 #define CONFIG_SPL_LDSCRIPT		"$(CPUDIR)/am33xx/u-boot-spl.lds"
122 
123 #endif	/* ! __BUR_AM335X_COMMON_H__ */
124