Re: [RFC PATCH 03/19] powerpc: gamecube: bootwrapper bits
From: Grant Likely <hidden>
Date: 2009-11-22 23:12:05
On Sun, Nov 22, 2009 at 3:01 PM, Albert Herranz [off-list ref] w= rote:
Add support for the Nintendo GameCube video game console to the powerpc bootwrapper. dtbImage.gamecube is a wrapped image that contains a flat device tree, an entry point compatible with SDload, and an optional initrd. Signed-off-by: Albert Herranz <redacted>
Acked-by: Grant Likely <redacted>
--- =A0arch/powerpc/boot/Makefile =A0 | =A0 =A04 ++- =A0arch/powerpc/boot/gamecube.c | =A0 78 ++++++++++++++++++++++++++++++++=
++++++++++
quoted hunk ↗ jump to hunk
=A02 files changed, 81 insertions(+), 1 deletions(-) =A0create mode 100644 arch/powerpc/boot/gamecube.cdiff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index 44bce21..b2f06b0 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile@@ -76,7 +76,8 @@ src-plat :=3D of.c cuboot-52xx.c cuboot-824x.c cuboot-8=
3xx.c cuboot-85xx.c holly.c
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0cuboot-katmai.c cuboot-rainier.c redboot-8=
xx.c ep8248e.c \
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yo=
semite.c simpleboot.c \
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0virtex405-head.S virtex.c redboot-83xx.c c=
uboot-sam440ep.c \
- =A0 =A0 =A0 =A0 =A0 =A0 =A0 cuboot-acadia.c cuboot-amigaone.c cuboot-ki=
lauea.c
+ =A0 =A0 =A0 =A0 =A0 =A0 =A0 cuboot-acadia.c cuboot-amigaone.c cuboot-ki=
lauea.c \
quoted hunk ↗ jump to hunk
+ =A0 =A0 =A0 =A0 =A0 =A0 =A0 gamecube.c =A0src-boot :=3D $(src-wlib) $(src-plat) empty.c =A0src-boot :=3D $(addprefix $(obj)/, $(src-boot))@@ -254,6 +255,7 @@ image-$(CONFIG_KSI8560) =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0 =A0 =A0 +=3D cuImage.ksi8560
=A0image-$(CONFIG_STORCENTER) =A0 =A0 =A0 =A0 =A0 =A0 +=3D cuImage.storce=
nter
=A0image-$(CONFIG_MPC7448HPC2) =A0 =A0 =A0 =A0 =A0 =A0+=3D cuImage.mpc744=
8hpc2
=A0image-$(CONFIG_PPC_C2K) =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0+=3D cuImage.c2k
+image-$(CONFIG_GAMECUBE) =A0 =A0 =A0 =A0 =A0 =A0 =A0 +=3D dtbImage.gamec=
ube
=A0# Board port in arch/powerpc/platform/amigaone/Kconfig =A0image-$(CONFIG_AMIGAONE) =A0 =A0 =A0 =A0 =A0 =A0 =A0 +=3D cuImage.amig=
aone
quoted hunk ↗ jump to hunk
diff --git a/arch/powerpc/boot/gamecube.c b/arch/powerpc/boot/gamecube.c new file mode 100644 index 0000000..0d6c517 --- /dev/null +++ b/arch/powerpc/boot/gamecube.c@@ -0,0 +1,78 @@ +/* + * arch/powerpc/boot/gamecube.c + * + * Nintendo GameCube bootwrapper support + * Copyright (C) 2004-2009 The GameCube Linux Team + * Copyright (C) 2008,2009 Albert Herranz + * + * 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. + * + */ + +#include <stddef.h> +#include "stdio.h" +#include "types.h" +#include "io.h" +#include "ops.h" + +#include "ugecon.h" + +BSS_STACK(8192); + +/* + * We enter with the cache enabled, the MMU enabled and some known legac=
y
+ * memory mappings active. xBAT3 is unused.
+ *
+ * We leave the MMU enabled, but we switch to an identity mapped memory
+ * scheme as expected by the start code.
+ *
+ */
+asm ("\n\
+.text\n\
+.globl _zimage_start\n\
+_zimage_start:\n\
+\n\
+ =A0 =A0 =A0 isync\n\
+ =A0 =A0 =A0 /* IBAT3,DBAT3 for first 16Mbytes */\n\
+ =A0 =A0 =A0 li =A0 =A0 =A08, 0x01ff =A0 =A0 =A0 /* 16MB */\n\
+ =A0 =A0 =A0 li =A0 =A0 =A09, 0x0002 =A0 =A0 =A0 /* rw */\n\
+ =A0 =A0 =A0 mtspr =A0 0x216, 8 =A0 =A0 =A0 =A0/* IBAT3U */\n\
+ =A0 =A0 =A0 mtspr =A0 0x217, 9 =A0 =A0 =A0 =A0/* IBAT3L */\n\
+ =A0 =A0 =A0 mtspr =A0 0x21e, 8 =A0 =A0 =A0 =A0/* DBAT3U */\n\
+ =A0 =A0 =A0 mtspr =A0 0x21f, 9 =A0 =A0 =A0 =A0/* DBAT3L */\n\
+\n\
+ =A0 =A0 =A0 sync\n\
+ =A0 =A0 =A0 isync\n\
+\n\
+ =A0 =A0 =A0 li =A0 =A0 =A03, 0\n\
+ =A0 =A0 =A0 li =A0 =A0 =A04, 0\n\
+ =A0 =A0 =A0 li =A0 =A0 =A05, 0\n\
+\n\
+ =A0 =A0 =A0 bcl- =A0 =A020,4*cr7+so,1f\n\
+1:\n\
+ =A0 =A0 =A0 mflr =A0 =A08\n\
+ =A0 =A0 =A0 clrlwi =A08, 8, 3\n\
+ =A0 =A0 =A0 addi =A0 =A08, 8, 2f - 1b\n\
+ =A0 =A0 =A0 mtlr =A0 =A08\n\
+ =A0 =A0 =A0 blr\n\
+2:\n\
+ =A0 =A0 =A0 b _zimage_start_lib\n\
+");
+
+/*
+ *
+ */
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5)
+{
+ =A0 =A0 =A0 u32 heapsize =3D 16*1024*1024 - (u32)_end;
+
+ =A0 =A0 =A0 simple_alloc_init(_end, heapsize, 32, 64);
+ =A0 =A0 =A0 fdt_init(_dtb_start);
+
+ =A0 =A0 =A0 if (!ug_grab_io_base() && ug_is_adapter_present())
+ =A0 =A0 =A0 =A0 =A0 =A0 =A0 console_ops.write =3D ug_console_write;
+}
+
--
1.6.3.3
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https://lists.ozlabs.org/listinfo/linuxppc-dev--=20 Grant Likely, B.Sc., P.Eng. Secret Lab Technologies Ltd.