xref: /openbmc/u-boot/include/configs/rpi.h (revision 8b7d51249eca113c4965a7c417f33d7eb569434b)
1 /*
2  * (C) Copyright 2012-2016 Stephen Warren
3  *
4  * SPDX-License-Identifier:	GPL-2.0
5  */
6 
7 #ifndef __CONFIG_H
8 #define __CONFIG_H
9 
10 #include <linux/sizes.h>
11 #include <asm/arch/timer.h>
12 
13 #if defined(CONFIG_TARGET_RPI_2) || defined(CONFIG_TARGET_RPI_3_32B)
14 #define CONFIG_SKIP_LOWLEVEL_INIT
15 #endif
16 
17 /* Architecture, CPU, etc.*/
18 #define CONFIG_ARCH_CPU_INIT
19 
20 /* Use SoC timer for AArch32, but architected timer for AArch64 */
21 #ifndef CONFIG_ARM64
22 #define CONFIG_SYS_TIMER_RATE		1000000
23 #define CONFIG_SYS_TIMER_COUNTER	\
24 	(&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo)
25 #endif
26 
27 /*
28  * 2835 is a SKU in a series for which the 2708 is the first or primary SoC,
29  * so 2708 has historically been used rather than a dedicated 2835 ID.
30  *
31  * We don't define a machine type for bcm2709/bcm2836 since the RPi Foundation
32  * chose to use someone else's previously registered machine ID (3139, MX51_GGC)
33  * rather than obtaining a valid ID:-/
34  *
35  * For the bcm2837, hopefully a machine type is not needed, since everything
36  * is DT.
37  */
38 #ifdef CONFIG_BCM2835
39 #define CONFIG_MACH_TYPE		MACH_TYPE_BCM2708
40 #endif
41 
42 /* Memory layout */
43 #define CONFIG_NR_DRAM_BANKS		1
44 #define CONFIG_SYS_SDRAM_BASE		0x00000000
45 #ifdef CONFIG_ARM64
46 #define CONFIG_SYS_TEXT_BASE		0x00080000
47 #else
48 #define CONFIG_SYS_TEXT_BASE		0x00008000
49 #endif
50 #define CONFIG_SYS_UBOOT_BASE		CONFIG_SYS_TEXT_BASE
51 /*
52  * The board really has 256M. However, the VC (VideoCore co-processor) shares
53  * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
54  * smaller amount of RAM is present in order to avoid stomping on the area
55  * the VC uses.
56  */
57 #define CONFIG_SYS_SDRAM_SIZE		SZ_128M
58 #define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_SDRAM_BASE + \
59 					 CONFIG_SYS_SDRAM_SIZE - \
60 					 GENERATED_GBL_DATA_SIZE)
61 #define CONFIG_SYS_MALLOC_LEN		SZ_4M
62 #define CONFIG_SYS_MEMTEST_START	0x00100000
63 #define CONFIG_SYS_MEMTEST_END		0x00200000
64 #define CONFIG_LOADADDR			0x00200000
65 
66 /* Flash */
67 #define CONFIG_SYS_NO_FLASH
68 
69 /* Devices */
70 /* GPIO */
71 #define CONFIG_BCM2835_GPIO
72 /* LCD */
73 #define CONFIG_LCD
74 #define CONFIG_LCD_DT_SIMPLEFB
75 #define LCD_BPP				LCD_COLOR16
76 /*
77  * Prevent allocation of RAM for FB; the real FB address is queried
78  * dynamically from the VideoCore co-processor, and comes from RAM
79  * not owned by the ARM CPU.
80  */
81 #define CONFIG_FB_ADDR			0
82 #define CONFIG_VIDEO_BCM2835
83 #define CONFIG_SYS_WHITE_ON_BLACK
84 #define CONFIG_CONSOLE_SCROLL_LINES	10
85 
86 /* SD/MMC configuration */
87 #define CONFIG_GENERIC_MMC
88 #define CONFIG_MMC
89 #define CONFIG_SDHCI
90 #define CONFIG_MMC_SDHCI_IO_ACCESSORS
91 #define CONFIG_BCM2835_SDHCI
92 
93 #ifdef CONFIG_CMD_USB
94 #define CONFIG_USB_DWC2
95 #ifndef CONFIG_BCM2835
96 #define CONFIG_USB_DWC2_REG_ADDR 0x3f980000
97 #else
98 #define CONFIG_USB_DWC2_REG_ADDR 0x20980000
99 #endif
100 #define CONFIG_USB_STORAGE
101 #define CONFIG_USB_HOST_ETHER
102 #define CONFIG_USB_ETHER_SMSC95XX
103 #define CONFIG_TFTP_TSIZE
104 #define CONFIG_MISC_INIT_R
105 #define CONFIG_USB_KEYBOARD
106 #define CONFIG_SYS_USB_EVENT_POLL
107 #define CONFIG_SYS_STDIO_DEREGISTER
108 #endif
109 
110 /* Console UART */
111 #ifdef CONFIG_BCM2837
112 #define CONFIG_BCM283X_MU_SERIAL
113 #else
114 #define CONFIG_PL01X_SERIAL
115 #endif
116 #define CONFIG_CONS_INDEX		0
117 #define CONFIG_BAUDRATE			115200
118 
119 /* Console configuration */
120 #define CONFIG_SYS_CBSIZE		1024
121 #define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE +		\
122 					 sizeof(CONFIG_SYS_PROMPT) + 16)
123 
124 /* Environment */
125 #define CONFIG_ENV_SIZE			SZ_16K
126 #define CONFIG_ENV_IS_IN_FAT
127 #define FAT_ENV_INTERFACE		"mmc"
128 #define FAT_ENV_DEVICE_AND_PART		"0:1"
129 #define FAT_ENV_FILE			"uboot.env"
130 #define CONFIG_FAT_WRITE
131 #define CONFIG_ENV_VARS_UBOOT_CONFIG
132 #define CONFIG_SYS_LOAD_ADDR		0x1000000
133 #define CONFIG_CONSOLE_MUX
134 #define CONFIG_SYS_CONSOLE_IS_IN_ENV
135 #define CONFIG_PREBOOT			"usb start"
136 
137 /* Shell */
138 #define CONFIG_SYS_MAXARGS		16
139 #define CONFIG_COMMAND_HISTORY
140 
141 /* Commands */
142 #define CONFIG_PARTITION_UUIDS
143 #define CONFIG_CMD_PART
144 
145 /* ATAGs support for bootm/bootz */
146 #define CONFIG_SETUP_MEMORY_TAGS
147 #define CONFIG_CMDLINE_TAG
148 #define CONFIG_INITRD_TAG
149 
150 #include <config_distro_defaults.h>
151 
152 /* Environment */
153 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
154 #define ENV_DEVICE_SETTINGS \
155 	"stdin=serial,usbkbd\0" \
156 	"stdout=serial,lcd\0" \
157 	"stderr=serial,lcd\0"
158 
159 /*
160  * Memory layout for where various images get loaded by boot scripts:
161  *
162  * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
163  *
164  * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's
165  *   binary firmware loads a DT to address 0x100, so we choose this address to
166  *   match it. This allows custom boot scripts to pass this DT on to Linux
167  *   simply by not over-writing the data at this address. When using U-Boot,
168  *   U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW
169  *   and loads its own DT from disk (triggered by boot.scr or extlinux.conf).
170  *
171  * pxefile_addr_r can be pretty much anywhere that doesn't conflict with
172  *   something else. Put it low in memory to avoid conflicts.
173  *
174  * kernel_addr_r must be within the first 128M of RAM in order for the
175  *   kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
176  *   decompress itself to 0x8000 after the start of RAM, kernel_addr_r
177  *   should not overlap that area, or the kernel will have to copy itself
178  *   somewhere else before decompression. Similarly, the address of any other
179  *   data passed to the kernel shouldn't overlap the start of RAM. Pushing
180  *   this up to 16M allows for a sizable kernel to be decompressed below the
181  *   compressed load address.
182  *
183  * scriptaddr can be pretty much anywhere that doesn't conflict with something
184  *   else. Choosing 32M allows for the compressed kernel to be up to 16M.
185  *
186  * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
187  *   for any boot script to be up to 1M, which is hopefully plenty.
188  */
189 #define ENV_MEM_LAYOUT_SETTINGS \
190 	"fdt_high=ffffffff\0" \
191 	"initrd_high=ffffffff\0" \
192 	"fdt_addr_r=0x00000100\0" \
193 	"pxefile_addr_r=0x00100000\0" \
194 	"kernel_addr_r=0x01000000\0" \
195 	"scriptaddr=0x02000000\0" \
196 	"ramdisk_addr_r=0x02100000\0" \
197 
198 #define BOOT_TARGET_DEVICES(func) \
199 	func(MMC, mmc, 0) \
200 	func(USB, usb, 0) \
201 	func(PXE, pxe, na) \
202 	func(DHCP, dhcp, na)
203 #include <config_distro_bootcmd.h>
204 
205 #define CONFIG_EXTRA_ENV_SETTINGS \
206 	"dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \
207 	ENV_DEVICE_SETTINGS \
208 	ENV_MEM_LAYOUT_SETTINGS \
209 	BOOTENV
210 
211 
212 #endif
213