Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / arm / cpu / arm920t / ep93xx / lowlevel_init.S

diff --git a/qemu/roms/u-boot/arch/arm/cpu/arm920t/ep93xx/lowlevel_init.S b/qemu/roms/u-boot/arch/arm/cpu/arm920t/ep93xx/lowlevel_init.S
new file mode 100644 (file)
index 0000000..bf2fa2a
--- /dev/null
+++ b/qemu/roms/u-boot/arch/arm/cpu/arm920t/ep93xx/lowlevel_init.S
@@ -0,0 +1,49 @@
+/*
+ * Low-level initialization for EP93xx
+ *
+ * Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net>
+ *
+ * Copyright (C) 2006 Dominic Rath <Dominic.Rath@gmx.de>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <version.h>
+#include <asm/arch/ep93xx.h>
+
+.globl lowlevel_init
+lowlevel_init:
+       /* backup return address */
+       ldr r1, =SYSCON_SCRATCH0
+       str lr, [r1]
+
+       /* Turn on both LEDs */
+       bl red_led_on
+       bl green_led_on
+
+       /* Configure flash wait states before we switch to the PLL */
+       bl flash_cfg
+
+       /* Set up PLL */
+       bl pll_cfg
+
+       /* Turn off the Green LED and leave the Red LED on */
+       bl green_led_off
+
+       /* Setup SDRAM */
+       bl sdram_cfg
+
+       /* Turn on Green LED, Turn off the Red LED */
+       bl green_led_on
+       bl red_led_off
+
+       /* FIXME: we use async mode for now */
+       mrc p15, 0, r0, c1, c0, 0
+       orr r0, r0, #0xc0000000
+       mcr p15, 0, r0, c1, c0, 0
+
+       /* restore return address */
+       ldr r1, =SYSCON_SCRATCH0
+       ldr lr, [r1]
+
+       mov pc, lr