[PATCH] MIPS: alchemy: Share prom_init implementation

From: Thomas Bogendoerfer
Date: Mon Oct 05 2020 - 07:28:54 EST


All boards have the same prom_init() function. Move it to common code and
delete the duplicates.

Signed-off-by: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
---
arch/mips/alchemy/board-gpr.c | 17 -----------------
arch/mips/alchemy/board-mtx1.c | 17 -----------------
arch/mips/alchemy/board-xxs1500.c | 18 ------------------
arch/mips/alchemy/common/prom.c | 20 ++++++++++++++++++++
arch/mips/alchemy/devboards/platform.c | 17 -----------------
5 files changed, 20 insertions(+), 69 deletions(-)

diff --git a/arch/mips/alchemy/board-gpr.c b/arch/mips/alchemy/board-gpr.c
index 6c47318946e4..f587c40b6d00 100644
--- a/arch/mips/alchemy/board-gpr.c
+++ b/arch/mips/alchemy/board-gpr.c
@@ -31,23 +31,6 @@ const char *get_system_type(void)
return "GPR";
}

-void __init prom_init(void)
-{
- unsigned char *memsize_str;
- unsigned long memsize;
-
- prom_argc = fw_arg0;
- prom_argv = (char **)fw_arg1;
- prom_envp = (char **)fw_arg2;
-
- prom_init_cmdline();
-
- memsize_str = prom_getenv("memsize");
- if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
- memsize = 0x04000000;
- add_memory_region(0, memsize, BOOT_MEM_RAM);
-}
-
void prom_putchar(char c)
{
alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
diff --git a/arch/mips/alchemy/board-mtx1.c b/arch/mips/alchemy/board-mtx1.c
index 23093535399f..68ea57511629 100644
--- a/arch/mips/alchemy/board-mtx1.c
+++ b/arch/mips/alchemy/board-mtx1.c
@@ -30,23 +30,6 @@ const char *get_system_type(void)
return "MTX-1";
}

-void __init prom_init(void)
-{
- unsigned char *memsize_str;
- unsigned long memsize;
-
- prom_argc = fw_arg0;
- prom_argv = (char **)fw_arg1;
- prom_envp = (char **)fw_arg2;
-
- prom_init_cmdline();
-
- memsize_str = prom_getenv("memsize");
- if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
- memsize = 0x04000000;
- add_memory_region(0, memsize, BOOT_MEM_RAM);
-}
-
void prom_putchar(char c)
{
alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
diff --git a/arch/mips/alchemy/board-xxs1500.c b/arch/mips/alchemy/board-xxs1500.c
index c67dfe1f4997..b184baa4e56a 100644
--- a/arch/mips/alchemy/board-xxs1500.c
+++ b/arch/mips/alchemy/board-xxs1500.c
@@ -25,24 +25,6 @@ const char *get_system_type(void)
return "XXS1500";
}

-void __init prom_init(void)
-{
- unsigned char *memsize_str;
- unsigned long memsize;
-
- prom_argc = fw_arg0;
- prom_argv = (char **)fw_arg1;
- prom_envp = (char **)fw_arg2;
-
- prom_init_cmdline();
-
- memsize_str = prom_getenv("memsize");
- if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
- memsize = 0x04000000;
-
- add_memory_region(0, memsize, BOOT_MEM_RAM);
-}
-
void prom_putchar(char c)
{
alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
diff --git a/arch/mips/alchemy/common/prom.c b/arch/mips/alchemy/common/prom.c
index af312b5e33f6..cfa203064d3c 100644
--- a/arch/mips/alchemy/common/prom.c
+++ b/arch/mips/alchemy/common/prom.c
@@ -34,6 +34,8 @@
*/

#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sizes.h>
#include <linux/string.h>

#include <asm/bootinfo.h>
@@ -76,6 +78,24 @@ char *prom_getenv(char *envname)
return NULL;
}

+void __init prom_init(void)
+{
+ unsigned char *memsize_str;
+ unsigned long memsize;
+
+ prom_argc = (int)fw_arg0;
+ prom_argv = (char **)fw_arg1;
+ prom_envp = (char **)fw_arg2;
+
+ prom_init_cmdline();
+
+ memsize_str = prom_getenv("memsize");
+ if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
+ memsize = SZ_64M; /* minimum memsize is 64MB RAM */
+
+ add_memory_region(0, memsize, BOOT_MEM_RAM);
+}
+
static inline unsigned char str2hexnum(unsigned char c)
{
if (c >= '0' && c <= '9')
diff --git a/arch/mips/alchemy/devboards/platform.c b/arch/mips/alchemy/devboards/platform.c
index 8d4b65c3268a..754bdd2ca630 100644
--- a/arch/mips/alchemy/devboards/platform.c
+++ b/arch/mips/alchemy/devboards/platform.c
@@ -20,23 +20,6 @@

#include <prom.h>

-void __init prom_init(void)
-{
- unsigned char *memsize_str;
- unsigned long memsize;
-
- prom_argc = (int)fw_arg0;
- prom_argv = (char **)fw_arg1;
- prom_envp = (char **)fw_arg2;
-
- prom_init_cmdline();
- memsize_str = prom_getenv("memsize");
- if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
- memsize = 64 << 20; /* all devboards have at least 64MB RAM */
-
- add_memory_region(0, memsize, BOOT_MEM_RAM);
-}
-
void prom_putchar(char c)
{
if (alchemy_get_cputype() == ALCHEMY_CPU_AU1300)
--
2.16.4