diff options
| author | Bin Meng <bmeng.cn@gmail.com> | 2018-04-11 22:02:07 -0700 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2018-04-16 16:54:51 +0800 |
| commit | 2902be86c1496244800ee15a148a4907bf9a3492 (patch) | |
| tree | a654074e5d69612b7dfe44a496e0ea8c9e7105a2 /include/vxworks.h | |
| parent | 2ad3d088d2177908bd9bc7a988bd75fe55c6874c (diff) | |
bootvx: x86: Prepare e820 related stuff from the given kernel memory base address
At present two environment variables 'e820data'/'e820info' are required
to boot a VxWorks x86 kernel, but this is superfluous. The offset of
these two tables are actually at a fixed offset from the kernel memory
base address and we can provide the kernel memory base address to U-Boot
via only one variable 'vx_phys_mem_base'.
Note as it name indicates, the physical address should be provided.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Diffstat (limited to 'include/vxworks.h')
| -rw-r--r-- | include/vxworks.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/include/vxworks.h b/include/vxworks.h index f69b0084ff..f600dfa337 100644 --- a/include/vxworks.h +++ b/include/vxworks.h @@ -9,9 +9,15 @@ #define _VXWORKS_H_ /* + * Physical address of memory base for VxWorks x86 + * This is LOCAL_MEM_LOCAL_ADRS in the VxWorks kernel configuration. + */ +#define VXWORKS_PHYS_MEM_BASE 0x100000 + +/* * VxWorks x86 E820 related stuff * - * VxWorks on x86 gets E820 information from pre-defined address @ + * VxWorks on x86 gets E820 information from pre-defined offset @ * 0x4a00 and 0x4000. At 0x4a00 it's an information table defined * by VxWorks and the actual E820 table entries starts from 0x4000. * As defined by the BIOS E820 spec, the maximum number of E820 table @@ -20,8 +26,8 @@ * information that is retrieved from the BIOS E820 call and saved * later for sanity test during the kernel boot-up. */ -#define VXWORKS_E820_DATA_ADDR 0x4000 -#define VXWORKS_E820_INFO_ADDR 0x4a00 +#define E820_DATA_OFFSET 0x4000 +#define E820_INFO_OFFSET 0x4a00 /* E820 info signatiure "SMAP" - System MAP */ #define E820_SIGNATURE 0x534d4150 |