powerpc/amigaone: Bootwrapper and serial console support for AmigaOne

This adds the bootwrapper for the cuImage target and a compatible property
check for "pnpPNP,501" to the generic serial console support code.
The default link address for the cuImage target is set to 0x800000. This
allows to boot the kernel with AmigaOS4's second level bootloader, which
always loads a uImage at 0x500000.

Signed-off-by: Gerhard Pircher <gerhard_pircher@gmx.net>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 8244813bc5a6b67198e3cfb6f7f3991bdee8becf..4458abb67c51bc5df204d261aeaed778122476a4 100644 (file)
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -70,7 +70,7 @@ src-plat := of.c cuboot-52xx.c cuboot-824x.c cuboot-83xx.c cuboot-85xx.c holly.c
                cuboot-katmai.c cuboot-rainier.c redboot-8xx.c ep8248e.c \
                cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yosemite.c simpleboot.c \
                virtex405-head.S virtex.c redboot-83xx.c cuboot-sam440ep.c \
-               cuboot-acadia.c
+               cuboot-acadia.c cuboot-amigaone.c
 src-boot := $(src-wlib) $(src-plat) empty.c
 
 src-boot := $(addprefix $(obj)/, $(src-boot))
@@ -276,6 +276,9 @@ image-$(CONFIG_STORCENTER)          += cuImage.storcenter
 image-$(CONFIG_MPC7448HPC2)            += cuImage.mpc7448hpc2
 image-$(CONFIG_PPC_C2K)                        += cuImage.c2k
 
+# Board port in arch/powerpc/platform/amigaone/Kconfig
+image-$(CONFIG_AMIGAONE)               += cuImage.amigaone
+
 # For 32-bit powermacs, build the COFF and miboot images
 # as well as the ELF images.
 ifeq ($(CONFIG_PPC32),y)

diff --git a/arch/powerpc/boot/cuboot-amigaone.c b/arch/powerpc/boot/cuboot-amigaone.c
new file mode 100644 (file)
index 0000000..d502967
--- /dev/null
+++ b/arch/powerpc/boot/cuboot-amigaone.c
@@ -0,0 +1,35 @@
+/*
+ * Old U-boot compatibility for AmigaOne
+ *
+ * Author: Gerhard Pircher (gerhard_pircher@gmx.net)
+ *
+ *   Based on cuboot-83xx.c
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include "ops.h"
+#include "stdio.h"
+#include "cuboot.h"
+
+#include "ppcboot.h"
+
+static bd_t bd;
+
+static void platform_fixups(void)
+{
+       dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
+       dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 4, bd.bi_busfreq);
+}
+
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+                   unsigned long r6, unsigned long r7)
+{
+       CUBOOT_INIT();
+       fdt_init(_dtb_start);
+       serial_console_init();
+       platform_ops.fixups = platform_fixups;
+}

diff --git a/arch/powerpc/boot/serial.c b/arch/powerpc/boot/serial.c
index 8b3607cb53fb158075a41d5af9845eb1b2bc9e32..f2156f07571f995f3673f67a59d0d20606b27e09 100644 (file)
--- a/arch/powerpc/boot/serial.c
+++ b/arch/powerpc/boot/serial.c
@@ -117,7 +117,8 @@ int serial_console_init(void)
        if (devp == NULL)
                goto err_out;
 
-       if (dt_is_compatible(devp, "ns16550"))
+       if (dt_is_compatible(devp, "ns16550") ||
+           dt_is_compatible(devp, "pnpPNP,501"))
                rc = ns16550_console_init(devp, &serial_cd);
        else if (dt_is_compatible(devp, "marvell,mv64360-mpsc"))
                rc = mpsc_console_init(devp, &serial_cd);

diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper
index 965c237c122d781063697dff3a9cef20dd2859ca..6170bbf339a34535b7346e98623f88336b68f816 100755 (executable)
--- a/arch/powerpc/boot/wrapper
+++ b/arch/powerpc/boot/wrapper
@@ -186,6 +186,9 @@ cuboot*)
     *-mpc85*|*-tqm85*|*-sbc85*)
         platformo=$object/cuboot-85xx.o
         ;;
+    *-amigaone)
+        link_address='0x800000'
+        ;;
     esac
     ;;
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