From 171bb2f19ed6f3627f4f783f658f2f475b2fbd50 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Wed, 30 Mar 2011 09:27:47 +0200 Subject: MIPS: Lantiq: Add initial support for Lantiq SoCs Add initial support for Mips based SoCs made by Lantiq. This series will add support for the XWAY family. The series allows booting a minimal system using a initramfs or NOR. Missing drivers and support for Amazon and GPON family will be provided in a later series. [Ralf: Remove some cargo cult programming and fixed formatting.] Signed-off-by: John Crispin Signed-off-by: Ralph Hempel Signed-off-by: David Daney Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2252/ Patchwork: https://patchwork.linux-mips.org/patch/2371/ Signed-off-by: Ralf Baechle --- arch/mips/lantiq/setup.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 arch/mips/lantiq/setup.c (limited to 'arch/mips/lantiq/setup.c') diff --git a/arch/mips/lantiq/setup.c b/arch/mips/lantiq/setup.c new file mode 100644 index 00000000000..79a2b0c5cc6 --- /dev/null +++ b/arch/mips/lantiq/setup.c @@ -0,0 +1,41 @@ +/* + * 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. + * + * Copyright (C) 2010 John Crispin + */ + +#include +#include +#include +#include +#include + +#include + +void __init plat_mem_setup(void) +{ + /* assume 16M as default incase uboot fails to pass proper ramsize */ + unsigned long memsize = 16; + char **envp = (char **) KSEG1ADDR(fw_arg2); + + ioport_resource.start = IOPORT_RESOURCE_START; + ioport_resource.end = IOPORT_RESOURCE_END; + iomem_resource.start = IOMEM_RESOURCE_START; + iomem_resource.end = IOMEM_RESOURCE_END; + + set_io_port_base((unsigned long) KSEG1); + + while (*envp) { + char *e = (char *)KSEG1ADDR(*envp); + if (!strncmp(e, "memsize=", 8)) { + e += 8; + if (strict_strtoul(e, 0, &memsize)) + pr_warn("bad memsize specified\n"); + } + envp++; + } + memsize *= 1024 * 1024; + add_memory_region(0x00000000, memsize, BOOT_MEM_RAM); +} -- cgit v1.2.3-18-g5258