From b4e8c8dd8456c1d3685fb5b715c9795d250f500e Mon Sep 17 00:00:00 2001 From: Torez Smith Date: Fri, 5 Mar 2010 10:45:54 +0000 Subject: powerpc/4xx: Simple platform for the ISS 4xx simulator This is a trivial 4xx plaform that uses the new simple bsp from Josh and is handy to use in simulators such as ISS or even Mambo who don't properly implement most of the actual devices in the SoC but really only the core. Signed-off-by: Torez Smith Signed-off-by: Dave Kleikamp Signed-off-by: Josh Boyer --- arch/powerpc/boot/treeboot-iss4xx.c | 56 +++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 arch/powerpc/boot/treeboot-iss4xx.c (limited to 'arch/powerpc/boot/treeboot-iss4xx.c') diff --git a/arch/powerpc/boot/treeboot-iss4xx.c b/arch/powerpc/boot/treeboot-iss4xx.c new file mode 100644 index 000000000000..fcc44952874e --- /dev/null +++ b/arch/powerpc/boot/treeboot-iss4xx.c @@ -0,0 +1,56 @@ +/* + * Copyright 2010 Ben. Herrenschmidt, IBM Corporation. + * + * Based on earlier code: + * Copyright (C) Paul Mackerras 1997. + * + * Matt Porter + * Copyright 2002-2005 MontaVista Software Inc. + * + * Eugene Surovegin or + * Copyright (c) 2003, 2004 Zultys Technologies + * + * Copyright 2007 David Gibson, IBM Corporation. + * + * 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 +#include +#include "types.h" +#include "elf.h" +#include "string.h" +#include "stdio.h" +#include "page.h" +#include "ops.h" +#include "reg.h" +#include "io.h" +#include "dcr.h" +#include "4xx.h" +#include "44x.h" +#include "libfdt.h" + +BSS_STACK(4096); + +static void iss_4xx_fixups(void) +{ + ibm4xx_sdram_fixup_memsize(); +} + +#define SPRN_PIR 0x11E /* Processor Indentification Register */ +void platform_init(void) +{ + unsigned long end_of_ram = 0x08000000; + unsigned long avail_ram = end_of_ram - (unsigned long)_end; + u32 pir_reg; + + simple_alloc_init(_end, avail_ram, 128, 64); + platform_ops.fixups = iss_4xx_fixups; + platform_ops.exit = ibm44x_dbcr_reset; + pir_reg = mfspr(SPRN_PIR); + fdt_set_boot_cpuid_phys(_dtb_start, pir_reg); + fdt_init(_dtb_start); + serial_console_init(); +} -- cgit v1.2.3