memory size in cf07

goodrich pll code
disable havedmi


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2303 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

3 files changed, 145 insertions, 2 deletions

diff --git a/src/mainboard/olpc/rev_a/auto.c b/src/mainboard/olpc/rev_a/auto.c
index 65c87103c1..1e11ec0081 100644
--- a/src/mainboard/olpc/rev_a/auto.c
+++ b/src/mainboard/olpc/rev_a/auto.c
@@ -94,6 +94,10 @@ static void sdram_set_spd_registers(const struct mem_controller *ctrl)
 	print_debug_hex32(msr.hi);
 	print_debug("\r\n");
 
+	/* for OLPC, set default size */
+	/* dimm size - hardcoded 128Mb */
+//	msr.hi &= ~(0xf << CF07_UPPER_D0_SZ_SHIFT);
+//	msr.hi |=  (5 << CF07_UPPER_D0_SZ_SHIFT);
 
 	/* this is a standard value, DOES NOT PROBABLY MATCH FROM ABOVE */
 	/* well, it may be close. It's about 200,000 ticks */
diff --git a/src/northbridge/amd/gx2/northbridgeinit.c b/src/northbridge/amd/gx2/northbridgeinit.c
index c89e4cb845..724b4de4c4 100644
--- a/src/northbridge/amd/gx2/northbridgeinit.c
+++ b/src/northbridge/amd/gx2/northbridgeinit.c
@@ -102,8 +102,8 @@ struct msrinit GeodeLinkPriorityTable [] = {
 	{0x0FFFFFFFF, 			{0x0FFFFFFFF, 0x0FFFFFFFF}},	/*  END*/
 };
 
-/* do we have dmi or not? assume yes */
-int havedmi = 1;
+/* do we have dmi or not? assume NO per AMD */
+int havedmi = 0;
 
 static void
 writeglmsr(struct gliutable *gl){
diff --git a/src/northbridge/amd/gx2/pll_reset.c b/src/northbridge/amd/gx2/pll_reset.c
index 504658576d..2437647c59 100644
--- a/src/northbridge/amd/gx2/pll_reset.c
+++ b/src/northbridge/amd/gx2/pll_reset.c
@@ -110,6 +110,144 @@ static unsigned int get_memory_speed(void)
 }
 #endif
 
+#define USE_GOODRICH_VERSION 1
+
+#if USE_GOODRICH_VERSION
+///////////////////////////////////////////////////////////////////////////////
+// Goodrich Version of pll_reset
+#define POST_CODE(x) outb(0x80, x)
+
+// PLLCHECK_COMPLETED is the "we've already done this" flag
+#define PLLCHECK_COMPLETED (1 << RSTPLL_LOWER_SWFLAGS_SHIFT)
+
+#ifndef RSTPPL_LOWER_BYPASS_SET
+#define RSTPPL_LOWER_BYPASS_SET (1 << GLCP_SYS_RSTPLL_BYPASS)
+#endif // RSTPPL_LOWER_BYPASS_SET
+
+#define DEFAULT_MDIV	3
+#define DEFAULT_VDIV	2
+#define DEFAULT_FBDIV	24  // 400/266 018 ;300/200 
+
+static void pll_reset(void)
+{
+	msr_t msrGlcpSysRstpll;
+	unsigned MDIV_VDIV_FBDIV;
+	unsigned SyncBits;			// store the sync bits in up ebx
+
+	// clear the Bypass bit
+	
+	// If the straps say we are in bypass and the syspll is not AND there are no software
+	// bits set then FS2 or something set up the PLL and we should not change it.
+	
+	msrGlcpSysRstpll = rdmsr(GLCP_SYS_RSTPLL);
+	msrGlcpSysRstpll.lo &= ~RSTPPL_LOWER_BYPASS_SET;
+	wrmsr(GLCP_SYS_RSTPLL, msrGlcpSysRstpll);
+
+	// If the "we've already been here" flag is set, don't reconfigure the pll
+	if ( !(msrGlcpSysRstpll.lo & PLLCHECK_COMPLETED ) )
+	{ // we haven't configured the PLL; do it now
+	
+		// Store PCI33(0)/66(1), SDR(0)/DDR(1), and CRT(0)/TFT(1) in upper esi to get to the
+		// correct Strap Table.
+		POST_CODE(POST_PLL_INIT);
+		
+		// configure for DDR
+		msrGlcpSysRstpll.lo &= ~(1 << RSTPPL_LOWER_SDRMODE_SHIFT);
+		wrmsr(GLCP_SYS_RSTPLL, msrGlcpSysRstpll);
+		
+		// Use Manual settings
+		//	UseManual:
+		POST_CODE(POST_PLL_MANUAL);
+
+		// DIV settings manually entered.
+		// ax = VDIV, upper eax = MDIV, upper ecx = FbDIV
+		// use gs and fs since we don't need them.
+		
+		//	ProgramClocks:
+		// ax = VDIV, upper eax = MDIV, upper ecx = FbDIV
+		// move everything into ebx
+		// VDIV
+		MDIV_VDIV_FBDIV = ((DEFAULT_VDIV - 2) << RSTPLL_UPPER_VDIV_SHIFT);
+
+		// MDIV
+		MDIV_VDIV_FBDIV |= ((DEFAULT_MDIV - 2) << RSTPLL_UPPER_MDIV_SHIFT);
+
+		// FbDIV
+		MDIV_VDIV_FBDIV |= (plldiv2fbdiv[DEFAULT_FBDIV] << RSTPLL_UPPER_FBDIV_SHIFT);
+
+		// write GLCP_SYS_RSTPPL (GLCP reg 0x14) with clock values  
+		msrGlcpSysRstpll.lo &= ~(1 << RSTPPL_LOWER_SDRMODE_SHIFT);
+		wrmsr(GLCP_SYS_RSTPLL, msrGlcpSysRstpll);
+
+		msrGlcpSysRstpll.hi = MDIV_VDIV_FBDIV;
+		wrmsr(GLCP_SYS_RSTPLL, msrGlcpSysRstpll);
+
+		// Set Reset, LockWait, and SW flag
+		//	DoReset:
+
+		// CheckSemiSync proc
+		// Check for Semi-Sync in GeodeLink and CPU.
+		// We need to do this here since the strap settings don't account for these bits.
+		SyncBits = 0;			// store the sync bits in up ebx
+
+		// Check for Bypass mode.
+		if (msrGlcpSysRstpll.lo & RSTPPL_LOWER_BYPASS_SET)
+		{
+			// If we are in BYPASS PCI may or may not be sync'd but CPU and GeodeLink will.	
+			SyncBits |= RSTPPL_LOWER_CPU_SEMI_SYNC_SET;
+		}
+		else
+		{
+			//	CheckPCIsync:	
+			// If FBdiv/Mdiv is evenly divisible then set the PCI semi-sync. FB is always greater
+			// look up the real divider... if we get a 0 we have serious problems
+			if ( !(fbdiv2plldiv[((msrGlcpSysRstpll.hi >> RSTPLL_UPPER_FBDIV_SHIFT) & 0x3f)] % 
+				(((msrGlcpSysRstpll.hi >> RSTPLL_UPPER_MDIV_SHIFT) & 0x0F) + 2)) )
+			{
+				SyncBits |= RSTPPL_LOWER_PCI_SEMI_SYNC_SET;
+			}
+
+			//	CheckCPUSync:
+			// If Vdiv/Mdiv is evenly divisible then set the CPU semi-sync.
+			// CPU is always greater or equal.
+			if (!((((msrGlcpSysRstpll.hi >> RSTPLL_UPPER_MDIV_SHIFT) & 0x07) + 2) %
+				(((msrGlcpSysRstpll.hi >> RSTPLL_UPPER_VDIV_SHIFT) & 0x0F) + 2)))
+			{
+				SyncBits |= RSTPPL_LOWER_CPU_SEMI_SYNC_SET;
+			}
+		}
+
+
+		//	SetSync:
+		msrGlcpSysRstpll.lo &= ~(RSTPPL_LOWER_PCI_SEMI_SYNC_SET | RSTPPL_LOWER_CPU_SEMI_SYNC_SET);
+		msrGlcpSysRstpll.lo |= SyncBits;
+		wrmsr(GLCP_SYS_RSTPLL, msrGlcpSysRstpll);
+		// CheckSemiSync endp
+
+		// now we do the reset
+		// Set hold count to 99 (063h)
+		msrGlcpSysRstpll.lo &= ~(0x0FF << RSTPPL_LOWER_HOLD_COUNT_SHIFT);
+		msrGlcpSysRstpll.lo |=  (0x0DE << RSTPPL_LOWER_HOLD_COUNT_SHIFT);
+		msrGlcpSysRstpll.lo |=  PLLCHECK_COMPLETED;		// Say we are done
+		wrmsr(GLCP_SYS_RSTPLL, msrGlcpSysRstpll);
+
+		// Don't want to use LOCKWAIT
+		msrGlcpSysRstpll.lo |= (RSTPPL_LOWER_PLL_RESET_SET + RSTPPL_LOWER_PD_SET);
+		msrGlcpSysRstpll.lo |= RSTPPL_LOWER_CHIP_RESET_SET;
+		wrmsr(GLCP_SYS_RSTPLL, msrGlcpSysRstpll);
+		
+		// You should never get here..... The chip has reset.
+		POST_CODE(POST_PLL_RESET_FAIL);
+		while (1);
+
+	} // we haven't configured the PLL; do it now
+	
+}
+// End of Goodrich version of pll_reset
+///////////////////////////////////////////////////////////////////////////////
+
+#else // #if USE_GOODRICH_VERSION
+
 static void pll_reset(void)
 {
 	msr_t msr;
@@ -179,3 +317,4 @@ static void pll_reset(void)
 
 	print_debug("should not be here\n\r");
 }
+#endif // #if USE_GOODRICH_VERSION