MIPS: MSP71xx: Remove the RAMROOT functions

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>

diff --git a/arch/mips/pmc-sierra/Kconfig b/arch/mips/pmc-sierra/Kconfig
index 90261b8..c139988 100644 (file)
--- a/arch/mips/pmc-sierra/Kconfig
+++ b/arch/mips/pmc-sierra/Kconfig
@@ -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

diff --git a/arch/mips/pmc-sierra/msp71xx/msp_prom.c b/arch/mips/pmc-sierra/msp71xx/msp_prom.c
index e5bd548..c317a36 100644 (file)
--- a/arch/mips/pmc-sierra/msp71xx/msp_prom.c
+++ b/arch/mips/pmc-sierra/msp71xx/msp_prom.c
@@ -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