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dm: vrtc: add memory configuration in RTC CMOS

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Some firmware (e.g. UEFI) uses RTC CMOS to fetch the system's memory
configuration. Put lowmem / highmem info in the designated area.

This is a port of Bhyve vRTC's user-space logic.

v1 -> v2:
* move KB/MB/GB to macros.h
* move nvram offset definitions to rtc.h

Tracked-On: #1390
Signed-off-by: Peter Fang <peter.fang@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
This commit is contained in:
Peter Fang
2018-09-25 16:13:14 -07:00
committed by Xie, Nanlin
parent 373e79bb52
commit 1657544152
4 changed files with 34 additions and 4 deletions
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4
devicemodel/include/sw_load.h
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@@ -30,10 +30,6 @@
#define STR_LEN 1024
#define KB (1024UL)
#define MB (1024 * 1024UL)
#define GB (1024 * 1024 * 1024UL)
/* E820 memory types */
#define E820_TYPE_RAM 1 /* EFI 1, 2, 3, 4, 5, 6, 7 */
/* EFI 0, 11, 12, 13 (everything not used elsewhere) */