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arm: Add support for the Broadcom Northstar SoCs

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The original Northstar is an ARM SoC series that comprise
BCM4709x and BCM5301x and uses a dual-core Cortex A9, the
global timer and a few other things.

This series should not be confused with North Star Plus
(NSP) which is partly supported by U-Boot already.

The SoC is well supported by the Linux kernel and OpenWrt
as it is used in many routers.

Since we currently don't need any chip-specific quirks
and can get the system up from just the device tree, a
mach-* directory doesn't even need to be added, just
some small Kconfig fragments.

Cc: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2023-04-24 09:38:29 +02:00 committed by Tom Rini
parent 8a5122bfd3
commit d3d9cd8ee1
1 changed files with 20 additions and 1 deletions
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21
arch/arm/Kconfig
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@ -357,7 +357,7 @@ config SYS_ARM_ARCH
choice
prompt "Select the ARM data write cache policy"
default SYS_ARM_CACHE_WRITETHROUGH if TARGET_BCMCYGNUS || RZA1
default SYS_ARM_CACHE_WRITETHROUGH if TARGET_BCMCYGNUS || TARGET_BCMNS || RZA1
default SYS_ARM_CACHE_WRITEBACK
config SYS_ARM_CACHE_WRITEBACK
@ -671,6 +671,25 @@ config TARGET_BCMCYGNUS
imply HASH_VERIFY
imply NETDEVICES
config TARGET_BCMNS
bool "Support Broadcom Northstar"
select CPU_V7A
select DM
select DM_GPIO
select DM_SERIAL
select OF_CONTROL
select TIMER
select SYS_NS16550
select ARM_GLOBAL_TIMER
imply SYS_THUMB_BUILD
imply MTD_RAW_NAND
imply NAND_BRCMNAND
imply NAND_BRCMNAND_IPROC
help
Support for Broadcom Northstar SoCs. NS is a dual-core 32-bit
ARMv7 Cortex-A9 SoC family including BCM4708, BCM47094,
BCM5301x etc.
config TARGET_BCMNS2
bool "Support Broadcom Northstar2"
select ARM64