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author | Timothy Pearson <tpearson@raptorengineering.com> | 2017-08-23 14:45:25 -0500 |
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committer | Timothy Pearson <tpearson@raptorengineering.com> | 2017-08-23 14:45:25 -0500 |
commit | fcbb27b0ec6dcbc5a5108cb8fb19eae64593d204 (patch) | |
tree | 22962a4387943edc841c72a4e636a068c66d58fd /arch/arm/mach-clps711x/edb7211-mm.c | |
download | ast2050-linux-kernel-fcbb27b0ec6dcbc5a5108cb8fb19eae64593d204.zip ast2050-linux-kernel-fcbb27b0ec6dcbc5a5108cb8fb19eae64593d204.tar.gz |
Initial import of modified Linux 2.6.28 tree
Original upstream URL:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git | branch linux-2.6.28.y
Diffstat (limited to 'arch/arm/mach-clps711x/edb7211-mm.c')
-rw-r--r-- | arch/arm/mach-clps711x/edb7211-mm.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/arch/arm/mach-clps711x/edb7211-mm.c b/arch/arm/mach-clps711x/edb7211-mm.c new file mode 100644 index 0000000..c58e32e --- /dev/null +++ b/arch/arm/mach-clps711x/edb7211-mm.c @@ -0,0 +1,82 @@ +/* + * linux/arch/arm/mach-clps711x/mm.c + * + * Extra MM routines for the EDB7211 board + * + * Copyright (C) 2000, 2001 Blue Mug, Inc. All Rights Reserved. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include <linux/kernel.h> +#include <linux/init.h> + +#include <mach/hardware.h> +#include <asm/page.h> +#include <asm/pgtable.h> +#include <asm/sizes.h> + +#include <asm/mach/map.h> + +extern void clps711x_map_io(void); + +/* + * The on-chip registers are given a size of 1MB so that a section can + * be used to map them; this saves a page table. This is the place to + * add mappings for ROM, expansion memory, PCMCIA, etc. (if static + * mappings are chosen for those areas). + * + * Here is a physical memory map (to be fleshed out later): + * + * Physical Address Size Description + * ----------------- ----- --------------------------------- + * c0000000-c001ffff 128KB reserved for video RAM [1] + * c0020000-c0023fff 16KB parameters (see Documentation/arm/Setup) + * c0024000-c0027fff 16KB swapper_pg_dir (task 0 page directory) + * c0028000-... kernel image (TEXTADDR) + * + * [1] Unused pages should be given back to the VM; they are not yet. + * The parameter block should also be released (not sure if this + * happens). + */ +static struct map_desc edb7211_io_desc[] __initdata = { + { /* memory-mapped extra keyboard row */ + .virtual = EP7211_VIRT_EXTKBD, + .pfn = __phys_to_pfn(EP7211_PHYS_EXTKBD), + .length = SZ_1M, + .type = MT_DEVICE, + }, { /* and CS8900A Ethernet chip */ + .virtual = EP7211_VIRT_CS8900A, + .pfn = __phys_to_pfn(EP7211_PHYS_CS8900A), + .length = SZ_1M, + .type = MT_DEVICE, + }, { /* flash banks */ + .virtual = EP7211_VIRT_FLASH1, + .pfn = __phys_to_pfn(EP7211_PHYS_FLASH1), + .length = SZ_8M, + .type = MT_DEVICE, + }, { + .virtual = EP7211_VIRT_FLASH2, + .pfn = __phys_to_pfn(EP7211_PHYS_FLASH2), + .length = SZ_8M, + .type = MT_DEVICE, + } +}; + +void __init edb7211_map_io(void) +{ + clps711x_map_io(); + iotable_init(edb7211_io_desc, ARRAY_SIZE(edb7211_io_desc)); +} + |