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>

2 files changed, 1 insertions, 71 deletions

diff --git a/arch/mips/pmc-sierra/Kconfig b/arch/mips/pmc-sierra/Kconfig
index 90261b83db04..c139988bb85d 100644
--- 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 e5bd5481d8db..c317a3623ce9 100644
--- 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