diff options
| author | Joel Stanley <joel@jms.id.au> | 2017-11-14 22:50:18 +1030 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2017-11-20 13:47:49 +0000 |
| commit | b6e70d1d7fea681306a3c8e74934b66dc9524969 (patch) | |
| tree | 1ad8a5b7c4ed72c29e8dea8386f11cf396cc8ad8 /include | |
| parent | 50cd71b0d347c74517dcb7da447fe657fca57d9c (diff) | |
hw/arm/aspeed: Unlock SCU when running kernel
The ASPEED hardware contains a lock register for the SCU that disables
any writes to the SCU when it is locked. The machine comes up with the
lock enabled, but on all known hardware u-boot will unlock it and leave
it unlocked when loading the kernel.
This means the kernel expects the SCU to be unlocked. When booting from
an emulated ROM the normal u-boot unlock path is executed. Things don't
go well when booting using the -kernel command line, as u-boot does not
run first.
Change behaviour so that when a kernel is passed to the machine, set the
reset value of the SCU to be unlocked.
Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-id: 20171114122018.12204-1-joel@jms.id.au
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/misc/aspeed_scu.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/hw/misc/aspeed_scu.h b/include/hw/misc/aspeed_scu.h index bd4ac013f9..d70cc0aeca 100644 --- a/include/hw/misc/aspeed_scu.h +++ b/include/hw/misc/aspeed_scu.h @@ -29,6 +29,7 @@ typedef struct AspeedSCUState { uint32_t silicon_rev; uint32_t hw_strap1; uint32_t hw_strap2; + uint32_t hw_prot_key; } AspeedSCUState; #define AST2400_A0_SILICON_REV 0x02000303U @@ -38,6 +39,8 @@ typedef struct AspeedSCUState { extern bool is_supported_silicon_rev(uint32_t silicon_rev); +#define ASPEED_SCU_PROT_KEY 0x1688A8A8 + /* * Extracted from Aspeed SDK v00.03.21. Fixes and extra definitions * were added. |