diff options
| author |   Huacai Chen <chenhc@lemote.com> | 2014-11-04 14:13:27 +0800 |
|---|---|---|
| committer |   Ralf Baechle <ralf@linux-mips.org> | 2014-11-24 07:45:01 +0100 |
| commit | 3adeb2566b9bc1dbf579ed515265c6aad756a5cd (patch) | |
| tree | 5b01da67a65f1f6ad3177b157ea9d9fc62f7d6ca /arch/mips/loongson/common/uart_base.c | |
| parent | MIPS: Loongson: Allow booting from any core (diff) | |
| download | linux-dev-3adeb2566b9bc1dbf579ed515265c6aad756a5cd.tar.xz linux-dev-3adeb2566b9bc1dbf579ed515265c6aad756a5cd.zip | |
MIPS: Loongson: Improve LEFI firmware interface
Machtypes of Loongson-3 machines become more and more, but there are
only small differences among different machtypes. Keeping a large table
of machtypes is very ugly and hard to extend. We found that the major
machtype differences are UARTs information (number of UARTs, UART IRQs,
UART clocks, etc.), platform devices (EC, temperature sensors, fan
controllers, etc.) and some workarounds (because of some CPU bugs or
mainboard bugs).
In this patch we improve the UEFI-like (LEFI) interface to make all
Loongson-3 machines use a same machtype "generic-loongson-machine".
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
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/8324/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/loongson/common/uart_base.c')
| -rw-r--r-- | arch/mips/loongson/common/uart_base.c | 30 |
1 files changed, 14 insertions, 16 deletions
diff --git a/arch/mips/loongson/common/uart_base.c b/arch/mips/loongson/common/uart_base.c index 1e1eeea73fde..9de559d58e1f 100644 --- a/arch/mips/loongson/common/uart_base.c +++ b/arch/mips/loongson/common/uart_base.c @@ -13,22 +13,27 @@ #include <loongson.h> -/* ioremapped */ -unsigned long _loongson_uart_base; -EXPORT_SYMBOL(_loongson_uart_base); /* raw */ -unsigned long loongson_uart_base; +unsigned long loongson_uart_base[MAX_UARTS] = {}; +/* ioremapped */ +unsigned long _loongson_uart_base[MAX_UARTS] = {}; + EXPORT_SYMBOL(loongson_uart_base); +EXPORT_SYMBOL(_loongson_uart_base); void prom_init_loongson_uart_base(void) { switch (mips_machtype) { + case MACH_LOONGSON_GENERIC: + /* The CPU provided serial port (CPU) */ + loongson_uart_base[0] = LOONGSON_REG_BASE + 0x1e0; + break; case MACH_LEMOTE_FL2E: - loongson_uart_base = LOONGSON_PCIIO_BASE + 0x3f8; + loongson_uart_base[0] = LOONGSON_PCIIO_BASE + 0x3f8; break; case MACH_LEMOTE_FL2F: case MACH_LEMOTE_LL2F: - loongson_uart_base = LOONGSON_PCIIO_BASE + 0x2f8; + loongson_uart_base[0] = LOONGSON_PCIIO_BASE + 0x2f8; break; case MACH_LEMOTE_ML2F7: case MACH_LEMOTE_YL2F89: @@ -36,17 +41,10 @@ void prom_init_loongson_uart_base(void) case MACH_LEMOTE_NAS: default: /* The CPU provided serial port (LPC) */ - loongson_uart_base = LOONGSON_LIO1_BASE + 0x3f8; - break; - case MACH_LEMOTE_A1004: - case MACH_LEMOTE_A1101: - case MACH_LEMOTE_A1201: - case MACH_LEMOTE_A1205: - /* The CPU provided serial port (CPU) */ - loongson_uart_base = LOONGSON_REG_BASE + 0x1e0; + loongson_uart_base[0] = LOONGSON_LIO1_BASE + 0x3f8; break; } - _loongson_uart_base = - (unsigned long)ioremap_nocache(loongson_uart_base, 8); + _loongson_uart_base[0] = + (unsigned long)ioremap_nocache(loongson_uart_base[0], 8); } |