xref: /openbmc/u-boot/arch/arm/mach-bcm283x/Kconfig (revision 7b0789e8)
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_V7
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_V7
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_2
48	bool "Raspberry Pi 2"
49	help
50	  Support for all BCM2836-based Raspberry Pi variants, such as
51	  the RPi 2 model B.
52
53	  This option also supports BCM2837-based variants such as the RPi 3
54	  Model B, when run in 32-bit mode, provided you have configured the
55	  VideoCore firmware to select the PL011 UART for the console by:
56	  a) config.txt should contain dtoverlay=pi3-miniuart-bt.
57	  b) You should run the following to tell the VC FW to process DT when
58	  booting, and copy u-boot.bin.img (rather than u-boot.bin) to the SD
59	  card as the kernel image:
60
61	       path/to/kernel/scripts/mkknlimg --dtok u-boot.bin u-boot.bin.img
62
63	  This works as of firmware.git commit 046effa13ebc "firmware:
64	  arm_loader: emmc clock depends on core clock See:
65	  https://github.com/raspberrypi/firmware/issues/572".
66
67	  This option creates a build targetting the ARMv7/AArch32 ISA.
68	select BCM2836
69
70config TARGET_RPI_3_32B
71	bool "Raspberry Pi 3 32-bit build"
72	help
73	  Support for all BCM2837-based Raspberry Pi variants, such as
74	  the RPi 3 model B, in AArch32 (32-bit) mode.
75
76	  This option assumes the VideoCore firmware is configured to use the
77	  mini UART (rather than PL011) for the serial console. This is the
78	  default on the RPi 3. To enable the UART console, the following non-
79	  default option must be present in config.txt: enable_uart=1. This is
80	  required for U-Boot to operate correctly, even if you only care
81	  about the HDMI/usbkbd console.
82
83	  This option creates a build targetting the ARMv7/AArch32 ISA.
84	select BCM2837_32B
85
86config TARGET_RPI_3
87	bool "Raspberry Pi 3 64-bit build"
88	help
89	  Support for all BCM2837-based Raspberry Pi variants, such as
90	  the RPi 3 model B, in AArch64 (64-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	  At the time of writing, the VC FW requires a non-default option in
100	  config.txt to request the ARM CPU boot in 64-bit mode:
101	  arm_control=0x200
102
103	  The VC FW typically provides ARM "stub" code to set up the CPU and
104	  quiesce secondary SMP CPUs. This is not currently true in 64-bit
105	  mode. In order to boot U-Boot before the VC FW is enhanced, please
106	  see the commit description for the commit which added RPi3 support
107	  for a workaround. Since the instructions are temporary, they are not
108	  duplicated here. The VC FW enhancement is tracked in
109	  https://github.com/raspberrypi/firmware/issues/579.
110
111	  This option creates a build targetting the ARMv8/AArch64 ISA.
112	select BCM2837_64B
113
114endchoice
115
116config SYS_BOARD
117	default "rpi"
118
119config SYS_VENDOR
120	default "raspberrypi"
121
122config SYS_SOC
123	default "bcm283x"
124
125config SYS_CONFIG_NAME
126	default "rpi"
127
128endmenu
129