AMD Geode cpus: apply un-written naming rules

Kconfig directives to select chip drivers for compile literally
match the chip directory names capitalized and underscored.

Rename directories and Kconfig as follows:
   model_lx  -> geode_lx
   model_gx1 -> geode_gx1
   model_gx2 -> geode_gx2

Change-Id: Ib8bf1e758b88f9efed1cf8b11c76b796388e7147
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/613
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 129 insertions, 0 deletions

diff --git a/src/cpu/amd/geode_gx2/cpureginit.c b/src/cpu/amd/geode_gx2/cpureginit.c
new file mode 100644
index 0000000..0fc852d
--- /dev/null
+++ b/src/cpu/amd/geode_gx2/cpureginit.c
@@ -0,0 +1,129 @@
+
+/* cpuRegInit */
+void cpuRegInit (void)
+{
+	int msrnum;
+	msr_t msr;
+	/* The following is only for diagnostics mode; do not use for OLPC */
+	if (0) {
+		/* Set Diagnostic Mode */
+		msrnum = CPU_GLD_MSR_DIAG;
+		msr.hi =  0;
+		msr.lo = DIAG_SEL1_SET | DIAG_SET0_SET;
+		wrmsr(msrnum, msr);
+
+		/* Set up GLCP to grab BTM data. */
+		msrnum = GLCP_DBGOUT;		/* GLCP_DBGOUT MSR */
+		msr.hi =  0x0;
+		msr.lo =  0x08;			/* reset value (SCOPE_SEL = 0) causes FIFO toshift out, */
+		wrmsr(msrnum, msr);		/* exchange it to anything else to prevent this */
+
+		/* Turn off debug clock */
+		msrnum = GLCP_DBGCLKCTL;	/* DBG_CLK_CTL */
+		msr.lo =  0x00;			/* No clock */
+		msr.hi =  0x00;
+		wrmsr(msrnum, msr);
+
+		/* Set debug clock to CPU */
+		msrnum = GLCP_DBGCLKCTL;	/* DBG_CLK_CTL */
+		msr.lo =  0x01;			/* CPU CLOCK */
+		msr.hi =  0x00;
+		wrmsr(msrnum, msr);
+
+		/* Set fifo ctl to BTM bits wide */
+		msrnum = GLCP_FIFOCTL;		/* FIFO_CTL */
+		msr.lo =  0x003880000;		/* Bit [25:24] are size (11=BTM, 10 = 64 bit, 01= 32 bit, 00 = 16bit) */
+		wrmsr(msrnum, msr);		/* Bit [23:21] are position (100 = CPU downto0) */
+						/* Bit [19] sets it up in slow data mode. */
+
+		/* enable fifo loading - BTM sizing will constrain */
+		/* only valid BTM packets to load - this action should always be on */
+		msrnum = 0x04C00006F;		/* GLCP ACTION7 - load fifo */
+		msr.lo =  0x00000F000;		/* Any nibble all 1's will always trigger */
+		msr.hi =  0x000000000;
+		wrmsr(msrnum, msr);
+
+		/* start storing diag data in the fifo */
+		msrnum = 0x04C00005F;		/* DIAG CTL */
+		msr.lo =  0x080000000;		/* enable actions */
+		msr.hi =  0x000000000;
+		wrmsr(msrnum, msr);
+
+		/* Set up delay on data lines, so that the hold time */
+		/* is 1 ns. */
+		msrnum = GLCP_PROCSTAT;		/* GLCP IO DELAY CONTROLS */
+		msr.lo =  0x082b5ad68;
+		msr.hi =  0x080ad6b57;		/* RGB delay = 0x07 */
+		wrmsr(msrnum, msr);
+
+		/* Set up DF to output diag information on DF pins. */
+		msrnum = DF_GLD_MSR_MASTER_CONF;
+		msr.lo =  0x0220;
+		msr.hi = 0;
+		wrmsr(msrnum, msr);
+
+		msrnum = GLCP_DBGOUT;		/* GLCP_DBGOUT MSR */
+		msr.hi =  0x0;
+		msr.lo =  0x0;			/* reset value (SCOPE_SEL = 0) causes FIFO to shift out, */
+		wrmsr(msrnum, msr);
+		/* end of code for BTM */
+	}
+
+	/* Enable Suspend on Halt */
+	msrnum = CPU_XC_CONFIG;
+	msr = rdmsr(msrnum);
+	msr.lo |=  XC_CONFIG_SUSP_ON_HLT;
+	wrmsr(msrnum, msr);
+
+	/* ENable SUSP and allow TSC to run in Suspend */
+	/* to keep speed detection happy */
+	msrnum = CPU_BC_CONF_0;
+	msr = rdmsr(msrnum);
+	msr.lo |=  TSC_SUSP_SET | SUSP_EN_SET;
+	wrmsr(msrnum, msr);
+
+	/* Setup throttling to proper mode if it is ever enabled. */
+	msrnum = GLCP_TH_OD;
+	msr.hi =  0x000000000;
+	msr.lo =  0x00000603C;
+	wrmsr(msrnum, msr);
+
+/* FooGlue Setup */
+	/* Set CS5535/CS5536 mode in FooGlue */
+	msrnum = FG_GIO_MSR_SEL;
+	msr = rdmsr(msrnum);
+	msr.lo &= ~3;
+	msr.lo |= 2;		/* IIOC mode CS5535/CS5536 enable. (according to Jordan Crouse the databook is wrong bits 1:0 have to be 2 instead of 1) */
+	wrmsr(msrnum, msr);
+
+/* Disable DOT PLL. Graphics init will enable it if needed. */
+	msrnum = GLCP_DOTPLL;
+	msr = rdmsr(msrnum);
+	msr.lo |= DOTPPL_LOWER_PD_SET;
+	wrmsr(msrnum, msr);
+
+/* Enable RSDC */
+	msrnum = CPU_AC_SMM_CTL;
+	msr = rdmsr(msrnum);
+	msr.lo |=  0x08;
+	wrmsr(msrnum, msr);
+
+/* Enable BTB */
+	/* I hate to put this check here but it doesn't really work in cpubug.asm */
+	msrnum = GLCP_CHIP_REVID;
+	msr = rdmsr(msrnum);
+	if (msr.lo >= CPU_REV_2_1){
+		msrnum = CPU_PF_BTB_CONF;
+		msr = rdmsr(msrnum);
+		msr.lo |= BTB_ENABLE_SET | RETURN_STACK_ENABLE_SET;
+		wrmsr(msrnum, msr);
+	}
+
+/* FPU impercise exceptions bit */
+	{
+		msrnum = CPU_FPU_MSR_MODE;
+		msr = rdmsr(msrnum);
+		msr.lo |= FPU_IE_SET;
+		wrmsr(msrnum, msr);
+	}
+}