davinci, c6x: Always use C version of reset code

We can safely use the same reset code written in C for both Davinci and
C6X platforms.  In addition the C version of the code is marginally
smaller on Davinci.

Tested-by: Matt Porter <mporter@ti.com>
Signed-off-by: Tom Rini <trini@ti.com>

diff --git a/arch/arm/cpu/arm926ejs/davinci/Makefile b/arch/arm/cpu/arm926ejs/davinci/Makefile
index da7efac0853348713831083173db2eb622f47f02..c91928e71d20bc0183c4c7ccada16072d1743b78 100644 (file)
--- a/arch/arm/cpu/arm926ejs/davinci/Makefile
+++ b/arch/arm/cpu/arm926ejs/davinci/Makefile
@@ -27,7 +27,7 @@ include $(TOPDIR)/config.mk
 
 LIB    = $(obj)lib$(SOC).o
 
-COBJS-y                                += cpu.o misc.o timer.o psc.o pinmux.o
+COBJS-y                                += cpu.o misc.o timer.o psc.o pinmux.o reset.o
 COBJS-$(CONFIG_DA850_LOWLEVEL) += da850_lowlevel.o
 COBJS-$(CONFIG_SOC_DM355)      += dm355.o
 COBJS-$(CONFIG_SOC_DM365)      += dm365.o
@@ -42,8 +42,6 @@ COBJS-$(CONFIG_SOC_DM365)     += dm365_lowlevel.o
 COBJS-$(CONFIG_SOC_DA8XX)      += da850_lowlevel.o
 endif
 
-SOBJS  = reset.o
-
 ifndef CONFIG_SKIP_LOWLEVEL_INIT
 SOBJS  += lowlevel_init.o
 endif

diff --git a/arch/arm/cpu/arm926ejs/davinci/reset.S b/arch/arm/cpu/arm926ejs/davinci/reset.S
deleted file mode 100644 (file)
index ba0a7c3..0000000
--- a/arch/arm/cpu/arm926ejs/davinci/reset.S
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * Processor reset using WDT for TI TMS320DM644x SoC.
- *
- * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
- *
- * -----------------------------------------------------
- *
- * 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
- */
-
-.globl reset_cpu
-reset_cpu:
-       ldr     r0, WDT_TGCR
-       mov     r1, $0x08
-       str     r1, [r0]
-       ldr     r1, [r0]
-       orr     r1, r1, $0x03
-       str     r1, [r0]
-       mov     r1, $0
-       ldr     r0, WDT_TIM12
-       str     r1, [r0]
-       ldr     r0, WDT_TIM34
-       str     r1, [r0]
-       ldr     r0, WDT_PRD12
-       str     r1, [r0]
-       ldr     r0, WDT_PRD34
-       str     r1, [r0]
-       ldr     r0, WDT_TCR
-       ldr     r1, [r0]
-       orr     r1, r1, $0x40
-       str     r1, [r0]
-       ldr     r0, WDT_WDTCR
-       ldr     r1, [r0]
-       orr     r1, r1, $0x4000
-       str     r1, [r0]
-       ldr     r1, WDTCR_VAL1
-       str     r1, [r0]
-       ldr     r1, WDTCR_VAL2
-       str     r1, [r0]
-       /* Write an invalid value to the WDKEY field to trigger
-        * an immediate watchdog reset */
-       mov     r1, $0x4000
-       str     r1, [r0]
-       nop
-       nop
-       nop
-       nop
-reset_cpu_loop:
-       b       reset_cpu_loop
-
-WDT_TGCR:
-       .word   0x01c21c24
-WDT_TIM12:
-       .word   0x01c21c10
-WDT_TIM34:
-       .word   0x01c21c14
-WDT_PRD12:
-       .word   0x01c21c18
-WDT_PRD34:
-       .word   0x01c21c1c
-WDT_TCR:
-       .word   0x01c21c20
-WDT_WDTCR:
-       .word   0x01c21c28
-WDTCR_VAL1:
-       .word   0xa5c64000
-WDTCR_VAL2:
-       .word   0xda7e4000

diff --git a/arch/arm/cpu/arm926ejs/davinci/reset.c b/arch/arm/cpu/arm926ejs/davinci/reset.c
new file mode 100644 (file)
index 0000000..968fb03
--- /dev/null
+++ b/arch/arm/cpu/arm926ejs/davinci/reset.c
@@ -0,0 +1,33 @@
+/*
+ *  Processor reset using WDT.
+ *
+ * Copyright (C) 2012 Dmitry Bondar <bond@inmys.ru>
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ *
+ * This file is released under the terms of GPL v2 and any later version.
+ * See the file COPYING in the root directory of the source tree for details.
+*/
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/timer_defs.h>
+#include <asm/arch/hardware.h>
+
+void reset_cpu(unsigned long a)
+{
+       struct davinci_timer *const wdttimer =
+               (struct davinci_timer *)DAVINCI_TIMER1_BASE;
+       writel(0x08, &wdttimer->tgcr);
+       writel(readl(&wdttimer->tgcr) | 0x03, &wdttimer->tgcr);
+       writel(0, &wdttimer->tim12);
+       writel(0, &wdttimer->tim34);
+       writel(0, &wdttimer->prd12);
+       writel(0, &wdttimer->prd34);
+       writel(readl(&wdttimer->tcr) | 0x40, &wdttimer->tcr);
+       writel(readl(&wdttimer->wdtcr) | 0x4000, &wdttimer->wdtcr);
+       writel(0xa5c64000, &wdttimer->wdtcr);
+       writel(0xda7e4000, &wdttimer->wdtcr);
+       writel(0x4000, &wdttimer->wdtcr);
+       while (1)
+               /*nothing*/;
+}