move blackfin cache functions to arch/blackfin/lib/cpu.c

1 files changed, 189 insertions, 0 deletions

diff --git a/arch/blackfin/lib/cpu.c b/arch/blackfin/lib/cpu.c
new file mode 100644
index 0000000000..78e2b966bb
--- /dev/null
+++ b/arch/blackfin/lib/cpu.c
@@ -0,0 +1,189 @@
+/*
+ * U-boot - cpu.c CPU specific functions
+ *
+ * Copyright (c) 2005 blackfin.uclinux.org
+ *
+ * (C) Copyright 2000-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/blackfin.h>
+#include <command.h>
+#include <asm/entry.h>
+
+#define SSYNC() asm("ssync;")
+#define CACHE_ON 1
+#define CACHE_OFF 0
+
+/* Data Attibutes*/
+
+#define SDRAM_IGENERIC		(PAGE_SIZE_4MB | CPLB_L1_CHBL | CPLB_USER_RD | CPLB_VALID)
+#define SDRAM_IKERNEL		(PAGE_SIZE_4MB | CPLB_L1_CHBL | CPLB_USER_RD | CPLB_VALID | CPLB_LOCK)
+#define L1_IMEMORY            	(PAGE_SIZE_1MB | CPLB_L1_CHBL | CPLB_USER_RD | CPLB_VALID | CPLB_LOCK)
+#define SDRAM_INON_CHBL		(PAGE_SIZE_4MB | CPLB_USER_RD | CPLB_VALID)
+
+#define ANOMALY_05000158		0x200
+#define SDRAM_DGENERIC          (PAGE_SIZE_4MB | CPLB_L1_CHBL | CPLB_WT | CPLB_L1_AOW | CPLB_SUPV_WR | CPLB_USER_RD | CPLB_USER_WR | CPLB_VALID | ANOMALY_05000158)
+#define SDRAM_DNON_CHBL         (PAGE_SIZE_4MB | CPLB_WT | CPLB_L1_AOW | CPLB_SUPV_WR | CPLB_USER_WR | CPLB_USER_RD | CPLB_VALID | ANOMALY_05000158)
+#define SDRAM_DKERNEL           (PAGE_SIZE_4MB | CPLB_L1_CHBL | CPLB_WT | CPLB_L1_AOW | CPLB_USER_RD | CPLB_SUPV_WR | CPLB_USER_WR | CPLB_VALID | CPLB_LOCK | ANOMALY_05000158)
+#define L1_DMEMORY              (PAGE_SIZE_4KB | CPLB_L1_CHBL | CPLB_L1_AOW | CPLB_WT | CPLB_SUPV_WR | CPLB_USER_WR | CPLB_VALID | ANOMALY_05000158)
+#define SDRAM_EBIU              (PAGE_SIZE_4MB | CPLB_WT | CPLB_L1_AOW | CPLB_USER_RD | CPLB_USER_WR | CPLB_SUPV_WR | CPLB_VALID | ANOMALY_05000158)
+
+static unsigned int icplb_table[16][2]={
+			{0xFFA00000, L1_IMEMORY},
+			{0x00000000, SDRAM_IKERNEL},	/*SDRAM_Page1*/
+			{0x00400000, SDRAM_IKERNEL},	/*SDRAM_Page1*/
+			{0x07C00000, SDRAM_IKERNEL},    /*SDRAM_Page14*/
+			{0x00800000, SDRAM_IGENERIC},	/*SDRAM_Page2*/
+			{0x00C00000, SDRAM_IGENERIC},	/*SDRAM_Page2*/
+			{0x01000000, SDRAM_IGENERIC},	/*SDRAM_Page4*/
+			{0x01400000, SDRAM_IGENERIC},	/*SDRAM_Page5*/
+			{0x01800000, SDRAM_IGENERIC},	/*SDRAM_Page6*/
+			{0x01C00000, SDRAM_IGENERIC},	/*SDRAM_Page7*/
+			{0x02000000, SDRAM_IGENERIC},	/*SDRAM_Page8*/
+			{0x02400000, SDRAM_IGENERIC},	/*SDRAM_Page9*/
+			{0x02800000, SDRAM_IGENERIC},	/*SDRAM_Page10*/
+			{0x02C00000, SDRAM_IGENERIC},	/*SDRAM_Page11*/
+			{0x03000000, SDRAM_IGENERIC},	/*SDRAM_Page12*/
+			{0x03400000, SDRAM_IGENERIC},	/*SDRAM_Page13*/
+};
+
+static unsigned int dcplb_table[16][2]={
+			{0xFFA00000,L1_DMEMORY},
+			{0x00000000,SDRAM_DKERNEL},	/*SDRAM_Page1*/
+			{0x00400000,SDRAM_DKERNEL},	/*SDRAM_Page1*/
+			{0x07C00000,SDRAM_DKERNEL},	/*SDRAM_Page15*/
+			{0x00800000,SDRAM_DGENERIC},	/*SDRAM_Page2*/
+			{0x00C00000,SDRAM_DGENERIC},	/*SDRAM_Page3*/
+			{0x01000000,SDRAM_DGENERIC},	/*SDRAM_Page4*/
+			{0x01400000,SDRAM_DGENERIC},	/*SDRAM_Page5*/
+			{0x01800000,SDRAM_DGENERIC},	/*SDRAM_Page6*/
+			{0x01C00000,SDRAM_DGENERIC},	/*SDRAM_Page7*/
+			{0x02000000,SDRAM_DGENERIC},	/*SDRAM_Page8*/
+			{0x02400000,SDRAM_DGENERIC},	/*SDRAM_Page9*/
+			{0x02800000,SDRAM_DGENERIC},	/*SDRAM_Page10*/
+			{0x02C00000,SDRAM_DGENERIC},	/*SDRAM_Page11*/
+			{0x03000000,SDRAM_DGENERIC},	/*SDRAM_Page12*/
+			{0x20000000,SDRAM_EBIU},	/*For Network */
+};
+
+int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	__asm__ __volatile__
+	("cli r3;"
+	"P0 = %0;"
+	"JUMP (P0);"
+	:
+	: "r" (L1_ISRAM)
+	);
+
+	return 0;
+}
+
+/* These functions are just used to satisfy the linker */
+int cpu_init(void)
+{
+	return 0;
+}
+
+int cleanup_before_linux(void)
+{
+	return 0;
+}
+
+void icache_enable(void)
+{
+	unsigned int *I0,*I1;
+	int i;
+
+	I0 = (unsigned int *)ICPLB_ADDR0;
+	I1 = (unsigned int *)ICPLB_DATA0;
+
+	for(i=0;i<16;i++){
+		*I0++ = icplb_table[i][0];
+		*I1++ = icplb_table[i][1];
+		}
+	cli();
+	SSYNC();
+	*(unsigned int *)IMEM_CONTROL = IMC | ENICPLB;
+	SSYNC();
+	sti();
+}
+
+void icache_disable(void)
+{
+	cli();
+	SSYNC();
+	*(unsigned int *)IMEM_CONTROL &= ~(IMC | ENICPLB);
+	SSYNC();
+	sti();
+}
+
+int icache_status(void)
+{
+	unsigned int value;
+	value = *(unsigned int *)IMEM_CONTROL;
+
+	if( value & (IMC|ENICPLB) )
+		return CACHE_ON;
+	else
+		return CACHE_OFF;
+}
+
+void dcache_enable(void)
+{
+	unsigned int *I0,*I1;
+	unsigned int temp;
+	int i;
+	I0 = (unsigned int *)DCPLB_ADDR0;
+	I1 = (unsigned int *)DCPLB_DATA0;
+
+	for(i=0;i<16;i++){
+		*I0++ = dcplb_table[i][0];
+		*I1++ = dcplb_table[i][1];
+		}
+	cli();
+	temp = *(unsigned int *)DMEM_CONTROL;
+	SSYNC();
+	*(unsigned int *)DMEM_CONTROL = ACACHE_BCACHE |ENDCPLB |PORT_PREF0|temp;
+	SSYNC();
+	sti();
+}
+
+void dcache_disable(void)
+{
+	cli();
+	SSYNC();
+	*(unsigned int *)DMEM_CONTROL &= ~(ACACHE_BCACHE |ENDCPLB |PORT_PREF0);
+	SSYNC();
+	sti();
+}
+
+int dcache_status(void)
+{
+	unsigned int value;
+	value = *(unsigned int *)DMEM_CONTROL;
+	if( value & (ENDCPLB))
+		return CACHE_ON;
+	else
+		return CACHE_OFF;
+}