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| author | Huacai Chen <chenhc@lemote.com> | 2014-03-21 18:44:02 +0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-03-31 18:17:12 +0200 |
| commit | 1a08f1524d2ee4d4239e56ee1b3f6da0df929563 (patch) | |
| tree | 35e14776ea58a8a99c491479dcd12e0a07cbe256 /arch/mips/loongson/common/init.c | |
| parent | 5f6d693ebb4993c49a0d150da1c5fff15867fec0 (diff) | |
| download | linux-next-1a08f1524d2ee4d4239e56ee1b3f6da0df929563.tar.gz | |
MIPS: Loongson: Add UEFI-like firmware interface (LEFI) support
The new UEFI-like firmware interface (LEFI, i.e. Loongson Unified
Firmware Interface) has 3 advantages:
1, Firmware export a physical memory map which is similar to X86's
E820 map, so prom_init_memory() will be more elegant that #ifdef
clauses can be removed.
2, Firmware export a pci irq routing table, we no longer need pci
irq routing fixup in kernel's code.
3, Firmware has a built-in vga bios, and its address is exported,
the linux kernel no longer need an embedded blob.
With the LEFI interface, Loongson-3A/2G and all their successors can use
a unified kernel. All Loongson-based machines support this new interface
except 2E/2F series.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Hongliang Tao <taohl@lemote.com>
Signed-off-by: Hua Yan <yanh@lemote.com>
Tested-by: Alex Smith <alex.smith@imgtec.com>
Reviewed-by: Alex Smith <alex.smith@imgtec.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/6632
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/loongson/common/init.c')
| -rw-r--r-- | arch/mips/loongson/common/init.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/mips/loongson/common/init.c b/arch/mips/loongson/common/init.c index ae7af1fd5d59..81ba3b4a8f30 100644 --- a/arch/mips/loongson/common/init.c +++ b/arch/mips/loongson/common/init.c @@ -17,10 +17,6 @@ unsigned long __maybe_unused _loongson_addrwincfg_base; void __init prom_init(void) { - /* init base address of io space */ - set_io_port_base((unsigned long) - ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE)); - #ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG _loongson_addrwincfg_base = (unsigned long) ioremap(LOONGSON_ADDRWINCFG_BASE, LOONGSON_ADDRWINCFG_SIZE); @@ -28,6 +24,11 @@ void __init prom_init(void) prom_init_cmdline(); prom_init_env(); + + /* init base address of io space */ + set_io_port_base((unsigned long) + ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE)); + prom_init_memory(); /*init the uart base address */ |