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authorBin Meng <bmeng.cn@gmail.com>2018-04-11 22:02:07 -0700
committerBin Meng <bmeng.cn@gmail.com>2018-04-16 16:54:51 +0800
commit2902be86c1496244800ee15a148a4907bf9a3492 (patch)
treea654074e5d69612b7dfe44a496e0ea8c9e7105a2 /include/vxworks.h
parent2ad3d088d2177908bd9bc7a988bd75fe55c6874c (diff)
downloadu-boot-2902be86c1496244800ee15a148a4907bf9a3492.tar.gz
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.h12
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