diff options
| author | Marshall Dawson <marshalldawson3rd@gmail.com> | 2019-05-22 08:08:23 -0600 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2019-06-06 20:00:08 +0000 |
| commit | 5d2e1d8023917a96f894dce5ee0b00838a6b4df2 (patch) | |
| tree | db5ab295ec1064f6fdd6506f54f3a8eaefb03b34 /src/soc/amd/common/block/acpimmio/mmio_util.c | |
| parent | 08462ce590009c951f0458e6303b97bebe759101 (diff) | |
soc/amd/common: Make biosram functions more readable
Modify the 16 and 32 bit BIOS RAM access functions that had been
originally moved from stoneyridge. This was suggested in the
review of
69486cac7: Create AcpiMmio functionality from stoneyridge
Change-Id: I5b491da6f263cbab2b549301e16a7e19896f2428
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32932
Reviewed-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/amd/common/block/acpimmio/mmio_util.c')
| -rw-r--r-- | src/soc/amd/common/block/acpimmio/mmio_util.c | 22 |
1 files changed, 7 insertions, 15 deletions
diff --git a/src/soc/amd/common/block/acpimmio/mmio_util.c b/src/soc/amd/common/block/acpimmio/mmio_util.c index d6320d69d8..c8c69888c6 100644 --- a/src/soc/amd/common/block/acpimmio/mmio_util.c +++ b/src/soc/amd/common/block/acpimmio/mmio_util.c @@ -142,11 +142,7 @@ uint8_t biosram_read8(uint8_t reg) uint16_t biosram_read16(uint8_t reg) /* Must be 1 byte at a time */ { - int i; - uint16_t value = 0; - for (i = sizeof(value) - 1 ; i >= 0 ; i--) - value = (value << 8) | biosram_read8(reg + i); - return value; + return (biosram_read8(reg + sizeof(uint8_t)) << 8 | biosram_read8(reg)); } uint32_t biosram_read32(uint8_t reg) @@ -162,20 +158,16 @@ void biosram_write8(uint8_t reg, uint8_t value) void biosram_write16(uint8_t reg, uint16_t value) { - int i; - for (i = 0 ; i < sizeof(value) ; i++) { - biosram_write8(reg + i, value & 0xff); - value >>= 8; - } + biosram_write8(reg, value & 0xff); + value >>= 8; + biosram_write8(reg + sizeof(uint8_t), value & 0xff); } void biosram_write32(uint8_t reg, uint32_t value) { - int i; - for (i = 0 ; i < sizeof(value) ; i++) { - biosram_write8(reg + i, value & 0xff); - value >>= 8; - } + biosram_write16(reg, value & 0xffff); + value >>= 16; + biosram_write16(reg + sizeof(uint16_t), value & 0xffff); } /* cmosram read/write - access registers at 0xfed80600 - currently unused */ |