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authorHuacai Chen <chenhc@lemote.com>2014-11-04 09:13:27 +0300
committerRalf Baechle <ralf@linux-mips.org>2014-11-24 09:45:01 +0300
commit3adeb2566b9bc1dbf579ed515265c6aad756a5cd (patch)
tree5b01da67a65f1f6ad3177b157ea9d9fc62f7d6ca /arch/mips/loongson/common/uart_base.c
parentec0f8d3fbb7ea12cfd10083e340381b96e7c34f8 (diff)
downloadlinux-3adeb2566b9bc1dbf579ed515265c6aad756a5cd.tar.xz
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.c30
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);
}