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MIPS: MSP71xx: Remove the RAMROOT functions

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The RAMROOT function was a successful but non-portable attempt to append
the root filesystem to the end of the kernel image.  The preferred and
portable solution is to use an initramfs instead.

Signed-off-by: Shane McDonald <mcdonald.shane@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Shane McDonald 2009-04-28 17:00:27 -06:00 committed by Ralf Baechle
parent 1a4ba061b3
commit 5c5dd1d291
2 changed files with 1 additions and 71 deletions
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12
arch/mips/pmc-sierra/Kconfig
View file

@ -36,18 +36,6 @@ config PMC_MSP7120_FPGA
endchoice
menu "Options for PMC-Sierra MSP chipsets"
depends on PMC_MSP
config PMC_MSP_EMBEDDED_ROOTFS
bool "Root filesystem embedded in kernel image"
select MTD
select MTD_BLOCK
select MTD_PMC_MSP_RAMROOT
select MTD_RAM
endmenu
config HYPERTRANSPORT
bool "Hypertransport Support for PMC-Sierra Yosemite"
depends on PMC_YOSEMITE

60
arch/mips/pmc-sierra/msp71xx/msp_prom.c
View file

@ -40,12 +40,6 @@
#include <linux/string.h>
#include <linux/interrupt.h>
#include <linux/mm.h>
#ifdef CONFIG_CRAMFS
#include <linux/cramfs_fs.h>
#endif
#ifdef CONFIG_SQUASHFS
#include <linux/squashfs_fs.h>
#endif
#include <asm/addrspace.h>
#include <asm/bootinfo.h>
@ -435,10 +429,6 @@ struct prom_pmemblock *__init prom_getmdesc(void)
char *str;
unsigned int memsize;
unsigned int heaptop;
#ifdef CONFIG_MTD_PMC_MSP_RAMROOT
void *ramroot_start;
unsigned long ramroot_size;
#endif
int i;
str = prom_getenv(memsz_env);
@ -506,19 +496,7 @@ struct prom_pmemblock *__init prom_getmdesc(void)
i++; /* 3 */
mdesc[i].type = BOOT_MEM_RESERVED;
mdesc[i].base = CPHYSADDR((u32)_text);
#ifdef CONFIG_MTD_PMC_MSP_RAMROOT
if (get_ramroot(&ramroot_start, &ramroot_size)) {
/*
* Rootfs in RAM -- follows kernel
* Combine rootfs image with kernel block so a
* page (4k) isn't wasted between memory blocks
*/
mdesc[i].size = CPHYSADDR(PAGE_ALIGN(
(u32)ramroot_start + ramroot_size)) - mdesc[i].base;
} else
#endif
mdesc[i].size = CPHYSADDR(PAGE_ALIGN(
(u32)_end)) - mdesc[i].base;
mdesc[i].size = CPHYSADDR(PAGE_ALIGN((u32)_end)) - mdesc[i].base;
/* Remainder of RAM -- under memsize */
i++; /* 5 */
@ -528,39 +506,3 @@ struct prom_pmemblock *__init prom_getmdesc(void)
return &mdesc[0];
}
/* rootfs functions */
#ifdef CONFIG_MTD_PMC_MSP_RAMROOT
bool get_ramroot(void **start, unsigned long *size)
{
extern char _end[];
/* Check for start following the end of the kernel */
void *check_start = (void *)_end;
/* Check for supported rootfs types */
#ifdef CONFIG_CRAMFS
if (*(__u32 *)check_start == CRAMFS_MAGIC) {
/* Get CRAMFS size */
*start = check_start;
*size = PAGE_ALIGN(((struct cramfs_super *)
check_start)->size);
return true;
}
#endif
#ifdef CONFIG_SQUASHFS
if (*((unsigned int *)check_start) == SQUASHFS_MAGIC) {
/* Get SQUASHFS size */
*start = check_start;
*size = PAGE_ALIGN(((struct squashfs_super_block *)
check_start)->bytes_used);
return true;
}
#endif
return false;
}
EXPORT_SYMBOL(get_ramroot);
#endif