changes to support new ppc arch

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2064 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

2 files changed, 89 insertions, 0 deletions

diff --git a/src/pmc/altimus/mpc7410/Config.lb b/src/pmc/altimus/mpc7410/Config.lb
index c162aa15ba..63b3383e31 100644
--- a/src/pmc/altimus/mpc7410/Config.lb
+++ b/src/pmc/altimus/mpc7410/Config.lb
@@ -12,3 +12,4 @@ dir /northbridge/motrola/mpc107
 ## Build the objects we have code for in this directory.
 ##
 object mpc7410.o
+object setup.o
diff --git a/src/pmc/altimus/mpc7410/setup.c b/src/pmc/altimus/mpc7410/setup.c
new file mode 100644
index 0000000000..e8c214c7d8
--- /dev/null
+++ b/src/pmc/altimus/mpc7410/setup.c
@@ -0,0 +1,88 @@
+/* Copyright 2000  AG Electronics Ltd. */
+/* This code is distributed without warranty under the GPL v2 (see COPYING) */
+
+#include "ppc.h"
+#include "ppcreg.h"
+#include "ppc74xx.h"
+
+extern void ppc_init_float_registers(const double *);
+/*RODATA static const double dummy_float = 1.0;*/
+static const double dummy_float = 1.0;
+
+#define HID0_DCACHE HID0_DCE
+#define MSR_DATA MSR_DR
+
+void ppc_setup_cpu(int icache)
+{
+	int type = ppc_getpvr() >> 16;
+	int version = ppc_getpvr() & 0xffff;
+
+	if (type == 0xc) 
+	{
+		if (version == 0x0200)
+			ppc_set1015(0x19000004);
+		else if (((version & 0xff00) == 0x0200) && 
+			(version != 0x0209))
+			ppc_set1015(0x01000000);
+	}
+	if (icache)
+	{
+		ppc_sethid0(HID0_NHR | HID0_BHT | HID0_ICE | HID0_ICFI 
+			| HID0_BTIC | HID0_DCACHE);
+		ppc_sethid0(HID0_DPM | HID0_NHR | HID0_BHT | HID0_ICE 
+			| HID0_BTIC | HID0_DCACHE);        
+	}
+	else
+	{
+		ppc_sethid0(HID0_DPM | HID0_NHR | HID0_BHT | HID0_BTIC 
+			| HID0_DCACHE);
+	}
+#if 1
+	/* if (type == 8 || type == 12) */
+	{
+		ppc_setmsr(MSR_FP | MSR_DATA);
+		ppc_init_float_registers(&dummy_float);
+	}
+#endif
+}
+
+void ppc_enable_dcache(void)
+{
+	/*
+	 * Already enabled in crt0.S
+	 */
+#if 0
+	unsigned hid0 = ppc_gethid0();
+	ppc_sethid0(hid0 | HID0_DCFI | HID0_DCE);
+	ppc_sethid0(hid0 | HID0_DCE);
+#endif
+}
+
+void ppc_disable_dcache(void)
+{
+	unsigned hid0 = ppc_gethid0();
+	ppc_sethid0(hid0 & ~HID0_DCE);
+}
+
+void ppc_enable_mmu(void)
+{
+	unsigned msr = ppc_getmsr();
+	ppc_setmsr(msr | MSR_DR | MSR_IR); 
+}
+
+void make_coherent(void *base, unsigned length)
+{
+	unsigned hid0 = ppc_gethid0();
+
+	if (hid0 & HID0_DCE)
+	{
+		unsigned i;
+		unsigned offset = 0x1f & (unsigned) base;
+		unsigned adjusted_base = (unsigned) base & ~0x1f;
+		for(i = 0; i < length + offset; i+= 32)
+			__asm__ volatile ("dcbf %1,%0" : : "r" (adjusted_base), "r" (i));
+		if (hid0 & HID0_ICE)
+		for(i = 0; i < length + offset; i+= 32)
+			__asm__ volatile ("icbi %1,%0" : : "r" (adjusted_base), "r" (i));
+	}
+}