[coreboot] Patch set updated for coreboot: 884dcde Add cmos helper functions for reading/writing a dword
Stefan Reinauer (stefan.reinauer@coreboot.org)
gerrit at coreboot.org
Fri Mar 9 02:22:53 CET 2012
Stefan Reinauer (stefan.reinauer at coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/717
-gerrit
commit 884dcdef1ee04a23ccf25d29cf4fcce2087b47af
Author: Duncan Laurie <dlaurie at chromium.org>
Date: Mon Sep 26 13:24:40 2011 -0700
Add cmos helper functions for reading/writing a dword
These get used later for saving/restoring the MRC scrambler
seed values on each boot.
Change-Id: I6e23f17649bea6d22c4b279ed8d0e5cb6c0885e7
Signed-off-by: Duncan Laurie <dlaurie at google.com>
---
src/include/pc80/mc146818rtc.h | 16 ++++++++++++++++
1 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/src/include/pc80/mc146818rtc.h b/src/include/pc80/mc146818rtc.h
index 3e5a61a..24dac2c 100644
--- a/src/include/pc80/mc146818rtc.h
+++ b/src/include/pc80/mc146818rtc.h
@@ -104,6 +104,22 @@ static inline void cmos_write(unsigned char val, unsigned char addr)
outb(addr, RTC_BASE_PORT + offs + 0);
outb(val, RTC_BASE_PORT + offs + 1);
}
+
+static inline u32 cmos_read32(u8 offset)
+{
+ u32 value = 0;
+ u8 i;
+ for (i = 0; i < sizeof(value); ++i)
+ value |= cmos_read(offset + i) << (i << 3);
+ return value;
+}
+
+static inline void cmos_write32(u8 offset, u32 value)
+{
+ u8 i;
+ for (i = 0; i < sizeof(value); ++i)
+ cmos_write((value >> (i << 3)) & 0xff, offset + i);
+}
#endif
#if !defined(__ROMCC__)
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