From: Sebastien Bourdeauducq <sb@m-labs.hk>
Date: Wed, 14 May 2014 13:01:02 +0000 (+0200)
Subject: bios: fix boot for or1k
X-Git-Tag: 24jan2021_ls180~2718
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=edf567a0cdca955a2be875df348b939a2d5b5b58;p=litex.git

bios: fix boot for or1k
---

diff --git a/software/bios/boot-helper-lm32.S b/software/bios/boot-helper-lm32.S
index d668f70f..bf3765c0 100644
--- a/software/bios/boot-helper-lm32.S
+++ b/software/bios/boot-helper-lm32.S
@@ -1,10 +1,4 @@
 .section    .text, "ax", @progbits
 .global     boot_helper
 boot_helper:
-	/* Invalidate instruction cache */
-	wcsr ICC, r0
-	nop
-	nop
-	nop
-	nop
 	call r4
diff --git a/software/bios/boot-helper-or1k.S b/software/bios/boot-helper-or1k.S
index ce775e8b..bb37749e 100644
--- a/software/bios/boot-helper-or1k.S
+++ b/software/bios/boot-helper-or1k.S
@@ -1,10 +1,4 @@
 .section    .text, "ax", @progbits
 .global     boot_helper
 boot_helper:
-	/* Invalidate instruction cache */
-	/* FIXME: wcsr ICC, r0 */
-	l.nop
-	l.nop
-	l.nop
-	l.nop
-	l.jr r7
+	l.jr r6
diff --git a/software/bios/boot.c b/software/bios/boot.c
index 5ba3de79..80cefdb7 100644
--- a/software/bios/boot.c
+++ b/software/bios/boot.c
@@ -22,6 +22,7 @@ static void __attribute__((noreturn)) boot(unsigned int r1, unsigned int r2, uns
 	uart_sync();
 	irq_setmask(0);
 	irq_setie(0);
+	flush_cpu_icache();
 	boot_helper(r1, r2, r3, addr);
 	while(1);
 }