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authorJiaxun Yang <jiaxun.yang@flygoat.com>2019-11-07 12:01:15 +0800
committerPaul Burton <paulburton@kernel.org>2019-11-11 10:44:56 -0800
commit75cac781dca43e735fbb4166d994263a14f0823e (patch)
treeef25a2c60eefce7b1172db0a3d32f43e545a6137 /arch/mips/loongson2ef
parent28e6b875fdbb17ef57cc4343d8825e0d5770f427 (diff)
downloadblackbird-op-linux-75cac781dca43e735fbb4166d994263a14f0823e.tar.gz
blackbird-op-linux-75cac781dca43e735fbb4166d994263a14f0823e.zip
MIPS: Loongson{2ef, 32, 64} convert to generic fw cmdline
All of Loongson firmwares are passing boot cmdline/env in the manner of YAMON/PMON. Thus we can remove duplicated cmdline initialize code and convert to generic fw method. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Paul Burton <paulburton@kernel.org> Cc: linux-mips@vger.kernel.org Cc: chenhe@lemote.com
Diffstat (limited to 'arch/mips/loongson2ef')
-rw-r--r--arch/mips/loongson2ef/common/Makefile2
-rw-r--r--arch/mips/loongson2ef/common/cmdline.c44
-rw-r--r--arch/mips/loongson2ef/common/env.c26
-rw-r--r--arch/mips/loongson2ef/common/init.c4
4 files changed, 8 insertions, 68 deletions
diff --git a/arch/mips/loongson2ef/common/Makefile b/arch/mips/loongson2ef/common/Makefile
index 684624f61f5a..10dd009a20a0 100644
--- a/arch/mips/loongson2ef/common/Makefile
+++ b/arch/mips/loongson2ef/common/Makefile
@@ -3,7 +3,7 @@
# Makefile for loongson based machines.
#
-obj-y += setup.o init.o cmdline.o env.o time.o reset.o irq.o \
+obj-y += setup.o init.o env.o time.o reset.o irq.o \
bonito-irq.o mem.o machtype.o platform.o serial.o
obj-$(CONFIG_PCI) += pci.o
diff --git a/arch/mips/loongson2ef/common/cmdline.c b/arch/mips/loongson2ef/common/cmdline.c
deleted file mode 100644
index a735460682cf..000000000000
--- a/arch/mips/loongson2ef/common/cmdline.c
+++ /dev/null
@@ -1,44 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Based on Ocelot Linux port, which is
- * Copyright 2001 MontaVista Software Inc.
- * Author: jsun@mvista.com or jsun@junsun.net
- *
- * Copyright 2003 ICT CAS
- * Author: Michael Guo <guoyi@ict.ac.cn>
- *
- * Copyright (C) 2007 Lemote Inc. & Institute of Computing Technology
- * Author: Fuxin Zhang, zhangfx@lemote.com
- *
- * Copyright (C) 2009 Lemote Inc.
- * Author: Wu Zhangjin, wuzhangjin@gmail.com
- */
-#include <asm/bootinfo.h>
-
-#include <loongson.h>
-
-void __init prom_init_cmdline(void)
-{
- int prom_argc;
- /* pmon passes arguments in 32bit pointers */
- int *_prom_argv;
- int i;
- long l;
-
- /* firmware arguments are initialized in head.S */
- prom_argc = fw_arg0;
- _prom_argv = (int *)fw_arg1;
-
- /* arg[0] is "g", the rest is boot parameters */
- arcs_cmdline[0] = '\0';
- for (i = 1; i < prom_argc; i++) {
- l = (long)_prom_argv[i];
- if (strlen(arcs_cmdline) + strlen(((char *)l) + 1)
- >= sizeof(arcs_cmdline))
- break;
- strcat(arcs_cmdline, ((char *)l));
- strcat(arcs_cmdline, " ");
- }
-
- prom_init_machtype();
-}
diff --git a/arch/mips/loongson2ef/common/env.c b/arch/mips/loongson2ef/common/env.c
index 29c5fecb8282..6f20bdf9b242 100644
--- a/arch/mips/loongson2ef/common/env.c
+++ b/arch/mips/loongson2ef/common/env.c
@@ -15,39 +15,21 @@
*/
#include <linux/export.h>
#include <asm/bootinfo.h>
+#include <asm/fw/fw.h>
#include <loongson.h>
u32 cpu_clock_freq;
EXPORT_SYMBOL(cpu_clock_freq);
-unsigned long long smp_group[4];
-
-#define parse_even_earlier(res, option, p) \
-do { \
- unsigned int tmp __maybe_unused; \
- \
- if (strncmp(option, (char *)p, strlen(option)) == 0) \
- tmp = kstrtou32((char *)p + strlen(option"="), 10, &res); \
-} while (0)
-
void __init prom_init_env(void)
{
/* pmon passes arguments in 32bit pointers */
unsigned int processor_id;
- int *_prom_envp;
- long l;
- /* firmware arguments are initialized in head.S */
- _prom_envp = (int *)fw_arg2;
+ cpu_clock_freq = fw_getenvl("cpuclock");
+ memsize = fw_getenvl("memsize");
+ highmemsize = fw_getenvl("highmemsize");
- l = (long)*_prom_envp;
- while (l != 0) {
- parse_even_earlier(cpu_clock_freq, "cpuclock", l);
- parse_even_earlier(memsize, "memsize", l);
- parse_even_earlier(highmemsize, "highmemsize", l);
- _prom_envp++;
- l = (long)*_prom_envp;
- }
if (memsize == 0)
memsize = 256;
diff --git a/arch/mips/loongson2ef/common/init.c b/arch/mips/loongson2ef/common/init.c
index a45430365729..dab3ffda8b14 100644
--- a/arch/mips/loongson2ef/common/init.c
+++ b/arch/mips/loongson2ef/common/init.c
@@ -9,6 +9,7 @@
#include <asm/traps.h>
#include <asm/smp-ops.h>
#include <asm/cacheflush.h>
+#include <asm/fw/fw.h>
#include <loongson.h>
@@ -32,7 +33,8 @@ void __init prom_init(void)
ioremap(LOONGSON_ADDRWINCFG_BASE, LOONGSON_ADDRWINCFG_SIZE);
#endif
- prom_init_cmdline();
+ fw_init_cmdline();
+ prom_init_machtype();
prom_init_env();
/* init base address of io space */
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