opensbi.git/include/sbi/fw_dynamic.h, branch v0.7Unnamed repository; edit this file 'description' to name the repository.http://cgit.235523.xyz/opensbi.git/atom/include/sbi/fw_dynamic.h?h=v0.72019-11-15T12:11:18Zfirmware: Add preferred boot HART field in struct fw_dynamic_info2019-11-15T12:11:18ZAnup Patelanup.patel@wdc.com2019-11-06T10:54:35Zurn:sha1:7a13beb213266cbf6f15ddbbef5bfca274086bd3
It has been reported that link address range of previous booting stage
(such as U-Boot SPL) can overlap the link address rage of FW_DYNAMIC.
This means self-relocation in FW_DYNAMIC can potentially corrupt
previous booting stage if any of the secondary HART enter FW_DYNAMIC
before primary HART.
To tackle this, we add preferred boot HART field (i.e boot_hart) in
struct fw_dyanmic_info. We use this field to force secondary HARTs
into relocation wait loop till preferred/primary boot HART enters
FW_DYNAMIC completes self-relocation. If preferred boot HART is not
available then we fall back to relocation lottery approach.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
firmware: Add fw_dynamic firmware2019-05-10T06:56:22ZAnup Patelanup.patel@wdc.com2019-04-29T06:25:19Zurn:sha1:bae54f764570f3fa5c592f313b45352d9f6f1d8a
This patch provides first-cut implementation of fw_dynamic firmware.
As compared to fw_jump and fw_payload, the fw_dynamic obtains next
address, next mode and OpenSBI options from struct fw_dynamic_info.
The previous booting stage can create struct fw_dynamic_info in memory
and pass address of struct fw_dynamic_info in 'a2' register. Also, the
struct fw_dynamic_info has versioning as well so changes to the struct
fw_dynamic_info can be done in a backward compatible manner.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>