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path: root/target/linux/ppc40x/patches/102-openrb-light-cf-card-fixup.patch
blob: 7e8d2ef36e59b8435eb1b03fb4fbf2917a5ea5b6 (plain)
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--- a/arch/powerpc/boot/cuboot-openrb-light.c
+++ b/arch/powerpc/boot/cuboot-openrb-light.c
@@ -22,8 +22,36 @@
 
 static bd_t bd;
 
+static void fixup_cf_card(void)
+{
+#define DCRN_CPC0_PCI_BASE	0xf9
+#define CF_CS0_BASE		0xff100000
+#define CF_CS1_BASE		0xff200000
+
+	/* Turn on PerWE instead of PCIsomething */
+	mtdcr(DCRN_CPC0_PCI_BASE,
+	      mfdcr(DCRN_CPC0_PCI_BASE) | (0x80000000L >> 27));
+
+	/* PerCS1 (CF's CS0): base 0xff100000, 16-bit, rw */
+	mtdcr(DCRN_EBC0_CFGADDR, EBC_B1CR);
+	mtdcr(DCRN_EBC0_CFGDATA, CF_CS0_BASE | EBC_BXCR_BU_RW | EBC_BXCR_BW_16);
+	mtdcr(DCRN_EBC0_CFGADDR, EBC_B1AP);
+	mtdcr(DCRN_EBC0_CFGDATA, 0x080bd800);
+
+	/* PerCS2 (CF's CS1): base 0xff200000, 16-bit, rw */
+	mtdcr(DCRN_EBC0_CFGADDR, EBC_B2CR);
+	mtdcr(DCRN_EBC0_CFGDATA, CF_CS1_BASE | EBC_BXCR_BU_RW | EBC_BXCR_BW_16);
+	mtdcr(DCRN_EBC0_CFGADDR, EBC_B2AP);
+	mtdcr(DCRN_EBC0_CFGDATA, 0x080bd800);
+
+#undef DCRN_CPC0_PCI_BASE
+#undef CF_CS0_BASE
+#undef CF_CS1_BASE
+}
+
 static void openrb_light_fixups(void)
 {
+	fixup_cf_card();
 	ibm405ep_fixup_clocks(33333000);
 	ibm4xx_sdram_fixup_memsize();
 	dt_fixup_mac_addresses(&bd.bi_enetaddr, &bd.bi_enet1addr);