X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=cpu%2Fmips%2Fstart.S;h=6a22302a081211cc50d07993f7ad3aeb87e4c2a1;hb=6d0f6bcf337c5261c08fabe12982178c2c489d76;hp=fde2944a0dd46eeffe2f9c0c86eb9462991ab325;hpb=26138623230ca2bad3c78e05a65527ea70c8b688;p=platform%2Fkernel%2Fu-boot.git

diff --git a/cpu/mips/start.S b/cpu/mips/start.S
index fde2944..6a22302 100644
--- a/cpu/mips/start.S
+++ b/cpu/mips/start.S
@@ -23,10 +23,33 @@
  */
 
 #include <config.h>
-#include <version.h>
 #include <asm/regdef.h>
 #include <asm/mipsregs.h>
 
+	/*
+	 * For the moment disable interrupts, mark the kernel mode and
+	 * set ST0_KX so that the CPU does not spit fire when using
+	 * 64-bit addresses.
+	 */
+	.macro	setup_c0_status set clr
+	.set	push
+	mfc0	t0, CP0_STATUS
+	or	t0, ST0_CU0 | \set | 0x1f | \clr
+	xor	t0, 0x1f | \clr
+	mtc0	t0, CP0_STATUS
+	.set	noreorder
+	sll	zero, 3				# ehb
+	.set	pop
+	.endm
+
+	.macro	setup_c0_status_reset
+#ifdef CONFIG_64BIT
+	setup_c0_status ST0_KX 0
+#else
+	setup_c0_status 0 0
+#endif
+	.endm
+
 #define RVECENT(f,n) \
    b f; nop
 #define XVECENT(f,bev) \
@@ -211,19 +234,11 @@ reset:
 	mtc0	zero, CP0_WATCHLO
 	mtc0	zero, CP0_WATCHHI
 
-	/* STATUS register */
-#ifdef  CONFIG_TB0229
-	li	k0, ST0_CU0
-#else
-	mfc0	k0, CP0_STATUS
-#endif
-	li	k1, ~ST0_IE
-	and	k0, k1
-	mtc0	k0, CP0_STATUS
-
-	/* CAUSE register */
+	/* WP(Watch Pending), SW0/1 should be cleared. */
 	mtc0	zero, CP0_CAUSE
 
+	setup_c0_status_reset
+
 	/* Init Timer */
 	mtc0	zero, CP0_COUNT
 	mtc0	zero, CP0_COMPARE
@@ -259,18 +274,18 @@ reset:
 
 	/* Set up temporary stack.
 	 */
-#ifdef CFG_INIT_RAM_LOCK_MIPS
-	li	a0, CFG_INIT_SP_OFFSET
+#ifdef CONFIG_SYS_INIT_RAM_LOCK_MIPS
+	li	a0, CONFIG_SYS_INIT_SP_OFFSET
 	la	t9, mips_cache_lock
 	jalr	t9
 	nop
 #endif
 
-	li	t0, CFG_SDRAM_BASE + CFG_INIT_SP_OFFSET
+	li	t0, CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_INIT_SP_OFFSET
 	la	sp, 0(t0)
 
 	la	t9, board_init_f
-	j	t9
+	jr	t9
 	nop
 
 /*
@@ -288,7 +303,7 @@ reset:
 relocate_code:
 	move	sp, a0		/* Set new stack pointer	*/
 
-	li	t0, CFG_MONITOR_BASE
+	li	t0, CONFIG_SYS_MONITOR_BASE
 	la	t3, in_ram
 	lw	t2, -12(t3)	/* t2 <-- uboot_end_data	*/
 	move	t1, a2
@@ -296,10 +311,10 @@ relocate_code:
 	/*
 	 * Fix $gp:
 	 *
-	 * New $gp = (Old $gp - CFG_MONITOR_BASE) + Destination Address
+	 * New $gp = (Old $gp - CONFIG_SYS_MONITOR_BASE) + Destination Address
 	 */
 	move	t6, gp
-	sub	gp, CFG_MONITOR_BASE
+	sub	gp, CONFIG_SYS_MONITOR_BASE
 	add	gp, a2		/* gp now adjusted		*/
 	sub	t6, gp, t6	/* t6 <-- relocation offset	*/
 
@@ -326,10 +341,11 @@ relocate_code:
 	/* Jump to where we've relocated ourselves.
 	 */
 	addi	t0, a2, in_ram - _start
-	j	t0
+	jr	t0
 	nop
 
-	.gpword	_GLOBAL_OFFSET_TABLE_	/* _GLOBAL_OFFSET_TABLE_ - _gp	*/
+	.word	_gp
+	.word	_GLOBAL_OFFSET_TABLE_
 	.word	uboot_end_data
 	.word	uboot_end
 	.word	num_got_entries
@@ -342,8 +358,10 @@ in_ram:
 	 * generated by GNU ld. Skip these reserved entries from relocation.
 	 */
 	lw	t3, -4(t0)	/* t3 <-- num_got_entries	*/
-	lw	t4, -16(t0)	/* t4 <-- (_GLOBAL_OFFSET_TABLE_ - _gp)	*/
-	add	t4, t4, gp	/* t4 now holds _GLOBAL_OFFSET_TABLE_	*/
+	lw	t4, -16(t0)	/* t4 <-- _GLOBAL_OFFSET_TABLE_	*/
+	lw	t5, -20(t0)	/* t5 <-- _gp	*/
+	sub	t4, t5		/* compute offset*/
+	add	t4, t4, gp	/* t4 now holds relocated _GLOBAL_OFFSET_TABLE_	*/
 	addi	t4, t4, 8	/* Skipping first two entries.	*/
 	li	t2, 2
 1:
@@ -371,7 +389,7 @@ in_ram:
 
 	move	a0, a1
 	la	t9, board_init_r
-	j	t9
+	jr	t9
 	move	a1, a2		/* delay slot			*/
 
 	.end	relocate_code