[Gc-linux-cvs] linux/arch/powerpc/boot Makefile, NONE, 1.1 gamecube.c, NONE, 1.1

[Albert H. <he...@us...>]

Update of /cvsroot/gc-linux/linux/arch/powerpc/boot
In directory sc8-pr-cvs2.sourceforge.net:/tmp/cvs-serv7117/arch/powerpc/boot

Added Files:
	Makefile gamecube.c 
Log Message:
Added powerpc arch.
Tweaked some driver for wii compatibility.


--- NEW FILE: gamecube.c ---
/*
 * arch/powerpc/boot/gamecube.c
 *
 * Nintendo GameCube boot 
 * Copyright (C) 2004-2008 The GameCube Linux Team
 * Copyright (C) 2008 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"

/*
 * Note that CONFIG_* defines are not available at this stage, except:
 * - CONFIG_USBGECKO_EARLY_CONSOLE
 * - CONFIG_GAMECUBE_WII
 */

BSS_STACK(4096);

/*
 * We enter with the MMU enabled and some legacy memory mappings active.
 *
 * 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\
	isync\n\
	/* IBAT3,DBAT3 for first 16Mbytes */\n\
	li	8, 0x01ff	/* 16MB */\n\
	li      9, 0x0002	/* rw */\n\
	mtspr   0x216, 8	/* IBAT3U */\n\
	mtspr   0x217, 9	/* IBAT3L */\n\
	mtspr   0x21e, 8	/* DBAT3U */\n\
	mtspr   0x21f, 9	/* DBAT3L */\n\
\n\
	sync\n\
	isync\n\
\n\
	li	3, 0\n\
	li	4, 0\n\
	li	5, 0\n\
\n\
	bcl-    20,4*cr7+so,1f\n\
1:\n\
	mflr    8\n\
	clrlwi  8, 8, 3\n\
	addi    8, 8, 2f - 1b\n\
	mtlr    8\n\
	blr\n\
2:\n\
	b _zimage_start_lib\n\
");

#ifdef CONFIG_USBGECKO_EARLY_CONSOLE

#ifdef CONFIG_GAMECUBE_WII
#define EXI_BASE		(0xcd006800)
#else
#define EXI_BASE		(0xcc006800)
#endif

#define EXI_CHANNEL_SPACING	0x14

#define EXI_IO_BASE(c)	((void *)(EXI_BASE + ((c)*EXI_CHANNEL_SPACING)))

#define EXI_CLK_32MHZ           5

#define EXI_CSR                 0x00
#define   EXI_CSR_CLKMASK       (0x7<<4)
#define     EXI_CSR_CLK_32MHZ   (EXI_CLK_32MHZ<<4)
#define   EXI_CSR_CSMASK        (0x7<<7)
#define     EXI_CSR_CS_0        (0x1<<7)  /* Chip Select 001 */

#define EXI_CR                  0x0c
#define   EXI_CR_TSTART         (1<<0)
#define   EXI_CR_WRITE		(1<<2)
#define   EXI_CR_READ_WRITE     (2<<2)
#define   EXI_CR_TLEN(len)      (((len)-1)<<4)

#define EXI_DATA                0x10


/*
 *
 */
static int ug_check_adapter(void)
{
	u32 *csr_reg = EXI_IO_BASE(1) + EXI_CSR;
	u32 *data_reg = EXI_IO_BASE(1) + EXI_DATA;
	u32 *cr_reg = EXI_IO_BASE(1) + EXI_CR;
	u32 csr, data, cr;

	/* select */
	csr = EXI_CSR_CLK_32MHZ | EXI_CSR_CS_0;
	out_be32(csr_reg, csr);

	/* read/write */
	data = 0x90000000;
	out_be32(data_reg, data);
	cr = EXI_CR_TLEN(2) | EXI_CR_READ_WRITE | EXI_CR_TSTART;
	out_be32(cr_reg, cr);

	while(in_be32(cr_reg) & EXI_CR_TSTART)
		barrier();

	/* deselect */
	out_be32(csr_reg, 0);

	data = in_be32(data_reg);
	return (data == 0x04700000);
}

/*
 *
 */
static int ug_is_txfifo_empty(void)
{
	u32 *csr_reg = EXI_IO_BASE(1) + EXI_CSR;
	u32 *data_reg = EXI_IO_BASE(1) + EXI_DATA;
	u32 *cr_reg = EXI_IO_BASE(1) + EXI_CR;
	u32 csr, data, cr;

	/* select */
	csr = EXI_CSR_CLK_32MHZ | EXI_CSR_CS_0;
	out_be32(csr_reg, csr);

	/* read/write */
	data = 0xC0000000;
	out_be32(data_reg, data);
	cr = EXI_CR_TLEN(2) | EXI_CR_READ_WRITE | EXI_CR_TSTART;
	out_be32(cr_reg, cr);

	while(in_be32(cr_reg) & EXI_CR_TSTART)
		barrier();

	/* deselect */
	out_be32(csr_reg, 0);

	data = in_be32(data_reg);
	return (data & 0x04000000);
}

/*
 * 
 */
static void ug_putc(char ch)
{
	u32 *csr_reg = EXI_IO_BASE(1) + EXI_CSR;
	u32 *data_reg = EXI_IO_BASE(1) + EXI_DATA;
	u32 *cr_reg = EXI_IO_BASE(1) + EXI_CR;
	u32 csr, data, cr;

	/* select */
	csr = EXI_CSR_CLK_32MHZ | EXI_CSR_CS_0;
	out_be32(csr_reg, csr);

	/* write */
	data = 0xb0000000 | (ch << 20);
	out_be32(data_reg, data);
	cr = EXI_CR_TLEN(2) | EXI_CR_WRITE | EXI_CR_TSTART;
	out_be32(cr_reg, cr);

	while(in_be32(cr_reg) & EXI_CR_TSTART)
		barrier();

	/* deselect */
	out_be32(csr_reg, 0);
}

/*
 *
 */
void ug_early_putc(char ch)
{
	int tries = 10;
	while(!ug_is_txfifo_empty() && tries--)
		barrier();
	ug_putc(ch);
}


static void gamecube_console_write(const char *buf, int len)
{
	char *b = (char *)buf;

	while(len--) {
		if (*b == '\n')
			ug_early_putc('\r');
		ug_early_putc(*b++);
	}
}

#endif /* CONFIG_USBGECKO_EARLY_CONSOLE */

void platform_init(unsigned long r3, unsigned long r4, unsigned long r5)
{
	u32 heapsize = 0x01654000 - (u32)_end;

#ifdef CONFIG_USBGECKO_EARLY_CONSOLE
	if (ug_check_adapter())
		console_ops.write = gamecube_console_write;
#endif

	simple_alloc_init(_end, heapsize, 32, 64);
	ft_init(_dtb_start, 0, 4);
}


--- NEW FILE: Makefile ---
# Makefile for making ELF bootable images for booting on CHRP
# using Open Firmware.
#
# Geert Uytterhoeven	September 1997
#
# Based on coffboot by Paul Mackerras
# Simplified for ppc64 by Todd Inglett
#
# NOTE:	this code is built for 32 bit in ELF32 format even though
#	it packages a 64 bit kernel.  We do this to simplify the
#	bootloader and increase compatibility with OpenFirmware.
#
#	To this end we need to define BOOTCC, etc, as the tools
#	needed to build the 32 bit image.  That's normally the same
#	compiler for the rest of the kernel, with the -m32 flag added.
#	To make it easier to setup a cross compiler,
#	CROSS32_COMPILE is setup as a prefix just like CROSS_COMPILE
#	in the toplevel makefile.

all: $(obj)/zImage

BOOTCFLAGS    := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
		 -fno-strict-aliasing -Os -msoft-float -pipe \
		 -fomit-frame-pointer -fno-builtin -fPIC -nostdinc \
		 -isystem $(shell $(CROSS32CC) -print-file-name=include)
BOOTAFLAGS	:= -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc

ifdef CONFIG_DEBUG_INFO
BOOTCFLAGS	+= -g
endif

ifeq ($(call cc-option-yn, -fstack-protector),y)
BOOTCFLAGS	+= -fno-stack-protector
endif

BOOTCFLAGS	+= -I$(obj) -I$(srctree)/$(obj)

extra-defs-$(CONFIG_GAMECUBE) += -DCONFIG_GAMECUBE
extra-defs-$(CONFIG_GAMECUBE_WII) += -DCONFIG_GAMECUBE_WII
extra-defs-$(CONFIG_USBGECKO_EARLY_CONSOLE) += -DCONFIG_USBGECKO_EARLY_CONSOLE

BOOTCFLAGS += $(extra-defs-y)
BOOTAFLAGS += $(extra-defs-y)

$(obj)/4xx.o: BOOTCFLAGS += -mcpu=440
$(obj)/ebony.o: BOOTCFLAGS += -mcpu=440
$(obj)/treeboot-walnut.o: BOOTCFLAGS += -mcpu=405

zlib       := inffast.c inflate.c inftrees.c
zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h
zliblinuxheader := zlib.h zconf.h zutil.h

$(addprefix $(obj)/,$(zlib) gunzip_util.o main.o): \
	$(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader))

src-wlib := string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \
		ns16550.c serial.c simple_alloc.c div64.S util.S \
		gunzip_util.c elf_util.c $(zlib) devtree.c oflib.c ofconsole.c \
		mv64x60.c mpsc.c mv64x60_i2c.c cuboot.c bamboo.c \
		cpm-serial.c stdlib.c mpc52xx-psc.c planetcore.c uartlite.c \
		fsl-soc.c mpc8xx.c pq2.c
src-plat := of.c cuboot-52xx.c cuboot-83xx.c cuboot-85xx.c holly.c \
		cuboot-ebony.c treeboot-ebony.c prpmc2800.c \
		treeboot-bamboo.c cuboot-8xx.c \
		cuboot-pq2.c cuboot-sequoia.c cuboot-bamboo.c \
		fixed-head.S ep88xc.c cuboot-hpc2.c

src-plat-$(CONFIG_GAMECUBE) += gamecube.c
src-plat += $(src-plat-y)

src-boot := $(src-wlib) $(src-plat) empty.c

src-boot := $(addprefix $(obj)/, $(src-boot))
obj-boot := $(addsuffix .o, $(basename $(src-boot)))
obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib))))
obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat))))

quiet_cmd_copy_zlib = COPY    $@
      cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@

quiet_cmd_copy_zlibheader = COPY    $@
      cmd_copy_zlibheader = sed "s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
# stddef.h for NULL
quiet_cmd_copy_zliblinuxheader = COPY    $@
      cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@

$(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
	$(call cmd,copy_zlib)

$(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
	$(call cmd,copy_zlibheader)

$(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/%
	$(call cmd,copy_zliblinuxheader)

$(obj)/empty.c:
	@touch $@

$(obj)/zImage.lds $(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds: $(obj)/%: $(srctree)/$(src)/%.S
	@cp $< $@

clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \
		empty.c zImage zImage.coff.lds zImage.ps3.lds zImage.lds

quiet_cmd_bootcc = BOOTCC  $@
      cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $<

quiet_cmd_bootas = BOOTAS  $@
      cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $<

quiet_cmd_bootar = BOOTAR  $@
      cmd_bootar = $(CROSS32AR) -cr $@.$$$$ $(filter-out FORCE,$^); mv $@.$$$$ $@

$(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c FORCE
	$(call if_changed_dep,bootcc)
$(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S FORCE
	$(call if_changed_dep,bootas)

$(obj)/wrapper.a: $(obj-wlib) FORCE
	$(call if_changed,bootar)

hostprogs-y	:= addnote addRamDisk hack-coff mktree

targets		+= $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a)
extra-y		:= $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
		   $(obj)/zImage.lds $(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds

wrapper		:=$(srctree)/$(src)/wrapper
wrapperbits	:= $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \
			$(wrapper) FORCE

#############
# Bits for building various flavours of zImage

ifneq ($(CROSS32_COMPILE),)
CROSSWRAP := -C "$(CROSS32_COMPILE)"
else
ifneq ($(CROSS_COMPILE),)
CROSSWRAP := -C "$(CROSS_COMPILE)"
endif
endif

# args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd
quiet_cmd_wrap	= WRAP    $@
      cmd_wrap	=$(CONFIG_SHELL) $(wrapper) -c -o $@ -p $2 $(CROSSWRAP) \
		$(if $3, -s $3)$(if $4, -d $4)$(if $5, -i $5) vmlinux

image-$(CONFIG_PPC_PSERIES)		+= zImage.pseries
image-$(CONFIG_PPC_MAPLE)		+= zImage.pseries
image-$(CONFIG_PPC_IBM_CELL_BLADE)	+= zImage.pseries
image-$(CONFIG_PPC_PS3)			+= zImage.ps3
image-$(CONFIG_PPC_CELLEB)		+= zImage.pseries
image-$(CONFIG_PPC_CHRP)		+= zImage.chrp
image-$(CONFIG_PPC_EFIKA)		+= zImage.chrp
image-$(CONFIG_PPC_PMAC)		+= zImage.pmac
image-$(CONFIG_PPC_HOLLY)		+= zImage.holly
image-$(CONFIG_PPC_PRPMC2800)		+= zImage.prpmc2800
image-$(CONFIG_PPC_ISERIES)		+= zImage.iseries
image-$(CONFIG_GAMECUBE)		+= zImage.gamecube
image-$(CONFIG_DEFAULT_UIMAGE)		+= uImage

ifneq ($(CONFIG_DEVICE_TREE),"")
image-$(CONFIG_PPC_8xx)			+= cuImage.8xx
image-$(CONFIG_PPC_EP88XC)		+= zImage.ep88xc
image-$(CONFIG_8260)			+= cuImage.pq2
image-$(CONFIG_PPC_MPC52xx)		+= cuImage.52xx
image-$(CONFIG_PPC_83xx)		+= cuImage.83xx
image-$(CONFIG_PPC_85xx)		+= cuImage.85xx
image-$(CONFIG_MPC7448HPC2)		+= cuImage.hpc2
image-$(CONFIG_EBONY)			+= treeImage.ebony cuImage.ebony
image-$(CONFIG_BAMBOO)			+= treeImage.bamboo cuImage.bamboo
image-$(CONFIG_SEQUOIA)			+= cuImage.sequoia
image-$(CONFIG_WALNUT)			+= treeImage.walnut
endif

# For 32-bit powermacs, build the COFF and miboot images
# as well as the ELF images.
ifeq ($(CONFIG_PPC32),y)
image-$(CONFIG_PPC_PMAC)	+= zImage.coff zImage.miboot
endif

initrd-  := $(patsubst zImage%, zImage.initrd%, $(image-n) $(image-))
initrd-y := $(patsubst zImage%, zImage.initrd%, \
		$(patsubst treeImage%, treeImage.initrd%, $(image-y)))
initrd-y := $(filter-out $(image-y), $(initrd-y))
targets	+= $(image-y) $(initrd-y)

$(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz

# If CONFIG_WANT_DEVICE_TREE is set and CONFIG_DEVICE_TREE isn't an
# empty string, define 'dts' to be path to the dts
# CONFIG_DEVICE_TREE will have "" around it, make sure to strip them
ifeq ($(CONFIG_WANT_DEVICE_TREE),y)
ifneq ($(CONFIG_DEVICE_TREE),"")
dts = $(if $(shell echo $(CONFIG_DEVICE_TREE) | grep '^/'),\
	,$(srctree)/$(src)/dts/)$(CONFIG_DEVICE_TREE:"%"=%)
endif
endif

# Don't put the ramdisk on the pattern rule; when its missing make will try
# the pattern rule with less dependencies that also matches (even with the
# hard dependency listed).
$(obj)/zImage.initrd.%: vmlinux $(wrapperbits) $(dts)
	$(call if_changed,wrap,$*,$(dts),,$(obj)/ramdisk.image.gz)

$(obj)/zImage.%: vmlinux $(wrapperbits) $(dts)
	$(call if_changed,wrap,$*,$(dts))

# This cannot be in the root of $(src) as the zImage rule always adds a $(obj)
# prefix
$(obj)/vmlinux.strip: vmlinux
	$(STRIP) -s -R .comment $< -o $@

$(obj)/zImage.iseries: vmlinux
	$(STRIP) -s -R .comment $< -o $@

$(obj)/zImage.ps3: vmlinux  $(wrapper) $(wrapperbits) $(srctree)/$(src)/dts/ps3.dts
	$(STRIP) -s -R .comment $< -o vmlinux.strip
	$(call cmd,wrap,ps3,$(srctree)/$(src)/dts/ps3.dts,,)

$(obj)/zImage.initrd.ps3: vmlinux  $(wrapper) $(wrapperbits) $(srctree)/$(src)/dts/ps3.dts $(obj)/ramdisk.image.gz
	$(call cmd,wrap,ps3,$(srctree)/$(src)/dts/ps3.dts,,$(obj)/ramdisk.image.gz)

$(obj)/uImage: vmlinux $(wrapperbits)
	$(call if_changed,wrap,uboot)

$(obj)/cuImage.%: vmlinux $(dts) $(wrapperbits)
	$(call if_changed,wrap,cuboot-$*,$(dts))

$(obj)/treeImage.initrd.%: vmlinux $(dts) $(wrapperbits)
	$(call if_changed,wrap,treeboot-$*,$(dts),,$(obj)/ramdisk.image.gz)

$(obj)/treeImage.%: vmlinux $(dts) $(wrapperbits)
	$(call if_changed,wrap,treeboot-$*,$(dts))

# If there isn't a platform selected then just strip the vmlinux.
ifeq (,$(image-y))
image-y := vmlinux.strip
endif

$(obj)/zImage:		$(addprefix $(obj)/, $(image-y))
	@rm -f $@; ln $< $@
$(obj)/zImage.initrd:	$(addprefix $(obj)/, $(initrd-y))
	@rm -f $@; ln $< $@

install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y))
	sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $<

# anything not in $(targets)
clean-files += $(image-) $(initrd-) zImage zImage.initrd cuImage.* treeImage.* \
	otheros.bld

# clean up files cached by wrapper
clean-kernel := vmlinux.strip vmlinux.bin
clean-kernel += $(addsuffix .gz,$(clean-kernel))
# If not absolute clean-files are relative to $(obj).
clean-files += $(addprefix $(objtree)/, $(clean-kernel))