xref: /openbmc/u-boot/arch/arm/mach-bcm283x/Kconfig (revision fbe502e9)
1config BCM2835
2	bool "Broadcom BCM2835 SoC support"
3	depends on ARCH_BCM283X
4	select CPU_ARM1176
5
6config BCM2836
7	bool "Broadcom BCM2836 SoC support"
8	depends on ARCH_BCM283X
9	select ARMV7_LPAE
10	select CPU_V7A
11
12config BCM2837
13	bool "Broadcom BCM2837 SoC support"
14	depends on ARCH_BCM283X
15
16config BCM2837_32B
17	bool "Broadcom BCM2837 SoC 32-bit support"
18	depends on ARCH_BCM283X
19	select BCM2837
20	select ARMV7_LPAE
21	select CPU_V7A
22
23config BCM2837_64B
24	bool "Broadcom BCM2837 SoC 64-bit support"
25	depends on ARCH_BCM283X
26	select BCM2837
27	select ARM64
28
29menu "Broadcom BCM283X family"
30	depends on ARCH_BCM283X
31
32choice
33	prompt "Broadcom BCM283X board select"
34	optional
35
36config TARGET_RPI
37	bool "Raspberry Pi (all BCM2835 variants)"
38	help
39	  Support for all ARM1176-/BCM2835-based Raspberry Pi variants, such as
40	  the A, A+, B, B+, Compute Module, and Zero. This option cannot
41	  support BCM2836/BCM2837-based Raspberry Pis such as the RPi 2 and
42	  RPi 3 due to different peripheral address maps.
43
44	  This option creates a build targetting the ARM1176 ISA.
45	select BCM2835
46
47config TARGET_RPI_0_W
48	bool "Raspberry Pi Zero W"
49	help
50	  Support for all ARM1176-/BCM2835-based Raspberry Pi variants, such as
51	  the RPi Zero model W.
52
53	  This option assumes the VideoCore firmware is configured to use the
54	  mini UART (rather than PL011) for the serial console. This is the
55	  default on the RPi Zero W. To enable the UART console, the following
56	  non-default option must be present in config.txt: enable_uart=1.
57	  This is required for U-Boot to operate correctly, even if you only
58	  care about the HDMI/usbkbd console.
59
60	  This option creates a build targetting the ARMv7/AArch32 ISA.
61	select BCM2835
62
63config TARGET_RPI_2
64	bool "Raspberry Pi 2"
65	help
66	  Support for all BCM2836-based Raspberry Pi variants, such as
67	  the RPi 2 model B.
68
69	  This option also supports BCM2837-based variants such as the RPi 3
70	  Model B, when run in 32-bit mode, provided you have configured the
71	  VideoCore firmware to select the PL011 UART for the console by:
72	  a) config.txt should contain dtoverlay=pi3-miniuart-bt.
73	  b) You should run the following to tell the VC FW to process DT when
74	  booting, and copy u-boot.bin.img (rather than u-boot.bin) to the SD
75	  card as the kernel image:
76
77	       path/to/kernel/scripts/mkknlimg --dtok u-boot.bin u-boot.bin.img
78
79	  This works as of firmware.git commit 046effa13ebc "firmware:
80	  arm_loader: emmc clock depends on core clock See:
81	  https://github.com/raspberrypi/firmware/issues/572".
82
83	  This option creates a build targetting the ARMv7/AArch32 ISA.
84	select BCM2836
85
86config TARGET_RPI_3_32B
87	bool "Raspberry Pi 3 32-bit build"
88	help
89	  Support for all BCM2837-based Raspberry Pi variants, such as
90	  the RPi 3 model B, in AArch32 (32-bit) mode.
91
92	  This option assumes the VideoCore firmware is configured to use the
93	  mini UART (rather than PL011) for the serial console. This is the
94	  default on the RPi 3. To enable the UART console, the following non-
95	  default option must be present in config.txt: enable_uart=1. This is
96	  required for U-Boot to operate correctly, even if you only care
97	  about the HDMI/usbkbd console.
98
99	  This option creates a build targetting the ARMv7/AArch32 ISA.
100	select BCM2837_32B
101
102config TARGET_RPI_3
103	bool "Raspberry Pi 3 64-bit build"
104	help
105	  Support for all BCM2837-based Raspberry Pi variants, such as
106	  the RPi 3 model B, in AArch64 (64-bit) mode.
107
108	  This option assumes the VideoCore firmware is configured to use the
109	  mini UART (rather than PL011) for the serial console. This is the
110	  default on the RPi 3. To enable the UART console, the following non-
111	  default option must be present in config.txt: enable_uart=1. This is
112	  required for U-Boot to operate correctly, even if you only care
113	  about the HDMI/usbkbd console.
114
115	  At the time of writing, the VC FW requires a non-default option in
116	  config.txt to request the ARM CPU boot in 64-bit mode:
117	  arm_control=0x200
118
119	  The VC FW typically provides ARM "stub" code to set up the CPU and
120	  quiesce secondary SMP CPUs. This is not currently true in 64-bit
121	  mode. In order to boot U-Boot before the VC FW is enhanced, please
122	  see the commit description for the commit which added RPi3 support
123	  for a workaround. Since the instructions are temporary, they are not
124	  duplicated here. The VC FW enhancement is tracked in
125	  https://github.com/raspberrypi/firmware/issues/579.
126
127	  This option creates a build targetting the ARMv8/AArch64 ISA.
128	select BCM2837_64B
129
130endchoice
131
132config SYS_BOARD
133	default "rpi"
134
135config SYS_VENDOR
136	default "raspberrypi"
137
138config SYS_SOC
139	default "bcm283x"
140
141config SYS_CONFIG_NAME
142	default "rpi"
143
144endmenu
145