AGESA f14: Consolidate early P-states setting

Change-Id: I3feed296b6ff9908e783c1221a8f61d9c548fef4
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/17564
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/cpu/amd/agesa/family14/fixme.c

@@ -98,6 +98,10 @@ void amd_initmmio(void)
 	LibAmdMsrWrite (0x20C, &MsrReg, &StdHeader);
 	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CACHE_ROM_SIZE) | MTRR_PHYS_MASK_VALID;
 	LibAmdMsrWrite (0x20D, &MsrReg, &StdHeader);
+
+	/* Set P-state 0 (1600 MHz) early to save a few ms of boot time */
+	MsrReg = 0;
+	LibAmdMsrWrite (0xC0010062, &MsrReg, &StdHeader);
 }
 
 void amd_initenv(void)