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Date: Tue, 6 Oct 2015 08:47:11 -0700
From: Daniel Walker <danielwa@...co.com>
To: xe-kernel@...ernal.cisco.com, Ralf Baechle <ralf@...ux-mips.org>
Cc: Daniel Walker <dwalker@...o99.com>, linux-mips@...ux-mips.org,
linux-kernel@...r.kernel.org
Subject: [PATCH-RFC 4/7] mips: convert to generic builtin command line
This updates the mips code to use the CONFIG_GENERIC_CMDLINE
option.
Cc: xe-kernel@...ernal.cisco.com
Cc: Daniel Walker <dwalker@...o99.com>
Signed-off-by: Daniel Walker <danielwa@...co.com>
---
arch/mips/Kconfig | 1 +
arch/mips/Kconfig.debug | 47 -----------------------------------------------
arch/mips/kernel/setup.c | 20 +++-----------------
3 files changed, 4 insertions(+), 64 deletions(-)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index e3aa5b0..2b05aeb 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -60,6 +60,7 @@ config MIPS
select SYSCTL_EXCEPTION_TRACE
select HAVE_VIRT_CPU_ACCOUNTING_GEN
select HAVE_IRQ_TIME_ACCOUNTING
+ select GENERIC_CMDLINE
menu "Machine selection"
diff --git a/arch/mips/Kconfig.debug b/arch/mips/Kconfig.debug
index e250524..16aab1c 100644
--- a/arch/mips/Kconfig.debug
+++ b/arch/mips/Kconfig.debug
@@ -32,53 +32,6 @@ config EARLY_PRINTK_8250
config USE_GENERIC_EARLY_PRINTK_8250
bool
-config CMDLINE_BOOL
- bool "Built-in kernel command line"
- default n
- help
- For most systems, it is firmware or second stage bootloader that
- by default specifies the kernel command line options. However,
- it might be necessary or advantageous to either override the
- default kernel command line or add a few extra options to it.
- For such cases, this option allows you to hardcode your own
- command line options directly into the kernel. For that, you
- should choose 'Y' here, and fill in the extra boot arguments
- in CONFIG_CMDLINE.
-
- The built-in options will be concatenated to the default command
- line if CMDLINE_OVERRIDE is set to 'N'. Otherwise, the default
- command line will be ignored and replaced by the built-in string.
-
- Most MIPS systems will normally expect 'N' here and rely upon
- the command line from the firmware or the second-stage bootloader.
-
-config CMDLINE
- string "Default kernel command string"
- depends on CMDLINE_BOOL
- default ""
- help
- On some platforms, there is currently no way for the boot loader to
- pass arguments to the kernel. For these platforms, and for the cases
- when you want to add some extra options to the command line or ignore
- the default command line, you can supply some command-line options at
- build time by entering them here. In other cases you can specify
- kernel args so that you don't have to set them up in board prom
- initialization routines.
-
- For more information, see the CMDLINE_BOOL and CMDLINE_OVERRIDE
- options.
-
-config CMDLINE_OVERRIDE
- bool "Built-in command line overrides firmware arguments"
- default n
- depends on CMDLINE_BOOL
- help
- By setting this option to 'Y' you will have your kernel ignore
- command line arguments from firmware or second stage bootloader.
- Instead, the built-in command line will be used exclusively.
-
- Normally, you will choose 'N' here.
-
config SB1XXX_CORELIS
bool "Corelis Debugger"
depends on SIBYTE_SB1xxx_SOC
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 4795151..de6fc31 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -26,6 +26,7 @@
#include <linux/sizes.h>
#include <linux/device.h>
#include <linux/dma-contiguous.h>
+#include <linux/cmdline.h>
#include <asm/addrspace.h>
#include <asm/bootinfo.h>
@@ -67,10 +68,6 @@ struct boot_mem_map boot_mem_map;
static char __initdata command_line[COMMAND_LINE_SIZE];
char __initdata arcs_cmdline[COMMAND_LINE_SIZE];
-#ifdef CONFIG_CMDLINE_BOOL
-static char __initdata builtin_cmdline[COMMAND_LINE_SIZE] = CONFIG_CMDLINE;
-#endif
-
/*
* mips_io_port_base is the begin of the address space to which x86 style
* I/O ports are mapped.
@@ -640,19 +637,8 @@ static void __init arch_mem_init(char **cmdline_p)
pr_info("Determined physical RAM map:\n");
print_memory_map();
-#ifdef CONFIG_CMDLINE_BOOL
-#ifdef CONFIG_CMDLINE_OVERRIDE
- strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
-#else
- if (builtin_cmdline[0]) {
- strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
- strlcat(arcs_cmdline, builtin_cmdline, COMMAND_LINE_SIZE);
- }
- strlcpy(boot_command_line, arcs_cmdline, COMMAND_LINE_SIZE);
-#endif
-#else
- strlcpy(boot_command_line, arcs_cmdline, COMMAND_LINE_SIZE);
-#endif
+ cmdline_add_builtin(boot_command_line, arcs_cmdline, COMMAND_LINE_SIZE);
+
strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
*cmdline_p = command_line;
--
2.1.4
--
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