1 /*
2  * bur_am335x_common.h
3  *
4  * common parts used by B&R AM335x based boards
5  *
6  * Copyright (C) 2013 Hannes Petermaier <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_SYS_GENERIC_BOARD
16 
17 #define CONFIG_AM33XX
18 #define CONFIG_OMAP
19 #define CONFIG_OMAP_COMMON
20 #define CONFIG_BOARD_LATE_INIT
21 #define CONFIG_SYS_CACHELINE_SIZE	64
22 #define CONFIG_MAX_RAM_BANK_SIZE	(1024 << 20)	/* 1GB */
23 
24 /* Timer information */
25 #define CONFIG_SYS_PTV			2	/* Divisor: 2^(PTV+1) => 8 */
26 #define CONFIG_SYS_TIMERBASE		0x48040000	/* Use Timer2 */
27 #define CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC	/* enable 32kHz OSC at bootime */
28 #define CONFIG_SPL_POWER_SUPPORT
29 #define CONFIG_POWER_TPS65217
30 
31 #define CONFIG_SYS_NO_FLASH		/* have no NOR-flash */
32 
33 #include <asm/arch/omap.h>
34 
35 /* NS16550 Configuration */
36 #define CONFIG_SYS_NS16550
37 #define CONFIG_SYS_NS16550_SERIAL
38 #define CONFIG_SYS_NS16550_REG_SIZE	(-4)
39 #define CONFIG_SYS_NS16550_CLK		48000000
40 #define CONFIG_SYS_NS16550_COM1		0x44e09000	/* UART0 */
41 #define CONFIG_BAUDRATE			115200
42 
43 /* Network defines */
44 #define CONFIG_CMD_NET			/* 'bootp' and 'tftp' */
45 #define CONFIG_CMD_DHCP
46 #define CONFIG_BOOTP_DNS		/* Configurable parts of CMD_DHCP */
47 #define CONFIG_BOOTP_SEND_HOSTNAME
48 #define CONFIG_BOOTP_GATEWAY
49 #define CONFIG_BOOTP_SUBNETMASK
50 #define CONFIG_NET_RETRY_COUNT		4
51 #define CONFIG_CMD_PING
52 #define CONFIG_DRIVER_TI_CPSW		/* Driver for IP block */
53 #define CONFIG_MII			/* Required in net/eth.c */
54 #define CONFIG_SPL_ETH_SUPPORT
55 #define CONFIG_PHYLIB
56 #define CONFIG_PHY_NATSEMI
57 #define CONFIG_SPL_NET_SUPPORT
58 #define CONFIG_SPL_ENV_SUPPORT		/* used for a fetching MAC-Address */
59 #define CONFIG_SPL_NET_VCI_STRING	"AM335x U-Boot SPL"
60 
61 /*
62  * SPL related defines.  The Public RAM memory map the ROM defines the
63  * area between 0x402F0400 and 0x4030B800 as a download area and
64  * 0x4030B800 to 0x4030CE00 as a public stack area.  The ROM also
65  * supports X-MODEM loading via UART, and we leverage this and then use
66  * Y-MODEM to load u-boot.img, when booted over UART.
67  */
68 #define CONFIG_SPL_TEXT_BASE		0x402F0400
69 #define CONFIG_SPL_MAX_SIZE		(0x4030B800 - CONFIG_SPL_TEXT_BASE)
70 
71 /*
72  * Since SPL did pll and ddr initialization for us,
73  * we don't need to do it twice.
74  */
75 #if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_NOR_BOOT)
76 #define CONFIG_SKIP_LOWLEVEL_INIT
77 #endif /* !CONFIG_SPL_BUILD, ... */
78 /*
79  * Our DDR memory always starts at 0x80000000 and U-Boot shall have
80  * relocated itself to higher in memory by the time this value is used.
81  */
82 #define CONFIG_SYS_LOAD_ADDR		0x80000000
83 /*
84  * ----------------------------------------------------------------------------
85  * DDR information.  We say (for simplicity) that we have 1 bank,
86  * always, even when we have more.  We always start at 0x80000000,
87  * and we place the initial stack pointer in our SRAM.
88  */
89 #define CONFIG_NR_DRAM_BANKS		1
90 #define CONFIG_SYS_SDRAM_BASE		0x80000000
91 #define CONFIG_SYS_INIT_SP_ADDR		(NON_SECURE_SRAM_END - \
92 					GENERATED_GBL_DATA_SIZE)
93 
94 /* I2C */
95 #define CONFIG_SYS_I2C
96 #define CONFIG_SYS_OMAP24_I2C_SPEED	100000
97 #define CONFIG_SYS_OMAP24_I2C_SLAVE	1
98 #define CONFIG_SYS_I2C_OMAP24XX
99 #define CONFIG_CMD_I2C
100 /* GPIO */
101 #define CONFIG_OMAP_GPIO
102 #define CONFIG_CMD_GPIO
103 /*
104  * ----------------------------------------------------------------------------
105  * The following are general good-enough settings for U-Boot.  We set a
106  * large malloc pool as we generally have a lot of DDR, and we opt for
107  * function over binary size in the main portion of U-Boot as this is
108  * generally easily constrained later if needed.  We enable the config
109  * options that give us information in the environment about what board
110  * we are on so we do not need to rely on the command prompt.  We set a
111  * console baudrate of 115200 and use the default baud rate table.
112  */
113 #define CONFIG_SYS_MALLOC_LEN		(1024 << 10)
114 #define CONFIG_SYS_HUSH_PARSER
115 #define CONFIG_SYS_PROMPT		"U-Boot (BuR V2.0)# "
116 #define CONFIG_SYS_CONSOLE_INFO_QUIET
117 #define CONFIG_ENV_OVERWRITE		/* Overwrite ethaddr / serial# */
118 
119 /* As stated above, the following choices are optional. */
120 #define CONFIG_SYS_LONGHELP
121 #define CONFIG_AUTO_COMPLETE
122 #define CONFIG_CMDLINE_EDITING
123 #define CONFIG_VERSION_VARIABLE
124 
125 /* We set the max number of command args high to avoid HUSH bugs. */
126 #define CONFIG_SYS_MAXARGS		64
127 
128 /* Console I/O Buffer Size */
129 #define CONFIG_SYS_CBSIZE		512
130 /* Print Buffer Size */
131 #define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE +\
132 					sizeof(CONFIG_SYS_PROMPT) + 16)
133 /* Boot Argument Buffer Size */
134 #define CONFIG_SYS_BARGSIZE		CONFIG_SYS_CBSIZE
135 /*
136  * For commands to use, we take the default list and add a few other
137  * useful commands.  Note that we must have set CONFIG_SYS_NO_FLASH
138  * prior to this include, in order to skip a few commands.  When we do
139  * have flash, if we expect these commands they must be enabled in that
140  * config.  If desired, a specific list of desired commands can be used
141  * instead.
142  */
143 #include <config_cmd_default.h>
144 /* undefine commands, which we do not need */
145 #undef CONFIG_CMD_EDITENV
146 #undef CONFIG_CMD_FPGA
147 #undef CONFIG_CMD_IMI
148 #undef CONFIG_CMD_ITEST
149 #undef CONFIG_CMD_LOADS
150 #undef CONFIG_CMD_LOADB
151 #undef CONFIG_CMD_NFS
152 #undef CONFIG_CMD_SETGETDCR
153 #undef CONFIG_CMD_XIMG
154 /* define command we need always */
155 #define CONFIG_CMD_ECHO
156 #define CONFIG_CMD_SOURCE
157 
158 /*
159  * Our platforms make use of SPL to initalize the hardware (primarily
160  * memory) enough for full U-Boot to be loaded.  We also support Falcon
161  * Mode so that the Linux kernel can be booted directly from SPL
162  * instead, if desired.  We make use of the general SPL framework found
163  * under common/spl/.  Given our generally common memory map, we set a
164  * number of related defaults and sizes here.
165  */
166 #define CONFIG_SPL_FRAMEWORK
167 /*
168  * Place the image at the start of the ROM defined image space.
169  * We limit our size to the ROM-defined downloaded image area, and use the
170  * rest of the space for stack.  We load U-Boot itself into memory at
171  * 0x80800000 for legacy reasons (to not conflict with older SPLs).  We
172  * have our BSS be placed 1MiB after this, to allow for the default
173  * Linux kernel address of 0x80008000 to work, in the Falcon Mode case.
174  * We have the SPL malloc pool at the end of the BSS area.
175  *
176  * ----------------------------------------------------------------------------
177  */
178 #define CONFIG_SPL_STACK		CONFIG_SYS_INIT_SP_ADDR
179 #undef  CONFIG_SYS_TEXT_BASE
180 #define CONFIG_SYS_TEXT_BASE		0x80800000
181 #define CONFIG_SPL_BSS_START_ADDR	0x80A00000
182 #define CONFIG_SPL_BSS_MAX_SIZE		0x80000		/* 512 KB */
183 #define CONFIG_SYS_SPL_MALLOC_START	(CONFIG_SPL_BSS_START_ADDR + \
184 					CONFIG_SPL_BSS_MAX_SIZE)
185 #define CONFIG_SYS_SPL_MALLOC_SIZE	CONFIG_SYS_MALLOC_LEN
186 
187 /* General parts of the framework, required. */
188 #define CONFIG_SPL_I2C_SUPPORT
189 #define CONFIG_SPL_LIBCOMMON_SUPPORT
190 #define CONFIG_SPL_LIBGENERIC_SUPPORT
191 #define CONFIG_SPL_SERIAL_SUPPORT
192 #define CONFIG_SPL_BOARD_INIT
193 #define CONFIG_SPL_YMODEM_SUPPORT
194 #define CONFIG_SPL_LDSCRIPT		"$(CPUDIR)/am33xx/u-boot-spl.lds"
195 
196 #endif	/* ! __BUR_AM335X_COMMON_H__ */
197