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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>
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1a4ba061b3
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5c5dd1d291
2 changed files with 1 additions and 71 deletions
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@ -36,18 +36,6 @@ config PMC_MSP7120_FPGA
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endchoice
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menu "Options for PMC-Sierra MSP chipsets"
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depends on PMC_MSP
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config PMC_MSP_EMBEDDED_ROOTFS
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bool "Root filesystem embedded in kernel image"
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select MTD
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select MTD_BLOCK
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select MTD_PMC_MSP_RAMROOT
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select MTD_RAM
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endmenu
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config HYPERTRANSPORT
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bool "Hypertransport Support for PMC-Sierra Yosemite"
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depends on PMC_YOSEMITE
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@ -40,12 +40,6 @@
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#include <linux/string.h>
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#include <linux/interrupt.h>
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#include <linux/mm.h>
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#ifdef CONFIG_CRAMFS
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#include <linux/cramfs_fs.h>
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#endif
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#ifdef CONFIG_SQUASHFS
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#include <linux/squashfs_fs.h>
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#endif
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#include <asm/addrspace.h>
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#include <asm/bootinfo.h>
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@ -435,10 +429,6 @@ struct prom_pmemblock *__init prom_getmdesc(void)
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char *str;
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unsigned int memsize;
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unsigned int heaptop;
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#ifdef CONFIG_MTD_PMC_MSP_RAMROOT
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void *ramroot_start;
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unsigned long ramroot_size;
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#endif
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int i;
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str = prom_getenv(memsz_env);
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@ -506,19 +496,7 @@ struct prom_pmemblock *__init prom_getmdesc(void)
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i++; /* 3 */
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mdesc[i].type = BOOT_MEM_RESERVED;
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mdesc[i].base = CPHYSADDR((u32)_text);
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#ifdef CONFIG_MTD_PMC_MSP_RAMROOT
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if (get_ramroot(&ramroot_start, &ramroot_size)) {
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/*
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* Rootfs in RAM -- follows kernel
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* Combine rootfs image with kernel block so a
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* page (4k) isn't wasted between memory blocks
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*/
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mdesc[i].size = CPHYSADDR(PAGE_ALIGN(
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(u32)ramroot_start + ramroot_size)) - mdesc[i].base;
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} else
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#endif
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mdesc[i].size = CPHYSADDR(PAGE_ALIGN(
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(u32)_end)) - mdesc[i].base;
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mdesc[i].size = CPHYSADDR(PAGE_ALIGN((u32)_end)) - mdesc[i].base;
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/* Remainder of RAM -- under memsize */
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i++; /* 5 */
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@ -528,39 +506,3 @@ struct prom_pmemblock *__init prom_getmdesc(void)
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return &mdesc[0];
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}
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/* rootfs functions */
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#ifdef CONFIG_MTD_PMC_MSP_RAMROOT
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bool get_ramroot(void **start, unsigned long *size)
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{
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extern char _end[];
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/* Check for start following the end of the kernel */
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void *check_start = (void *)_end;
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/* Check for supported rootfs types */
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#ifdef CONFIG_CRAMFS
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if (*(__u32 *)check_start == CRAMFS_MAGIC) {
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/* Get CRAMFS size */
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*start = check_start;
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*size = PAGE_ALIGN(((struct cramfs_super *)
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check_start)->size);
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return true;
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}
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#endif
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#ifdef CONFIG_SQUASHFS
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if (*((unsigned int *)check_start) == SQUASHFS_MAGIC) {
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/* Get SQUASHFS size */
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*start = check_start;
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*size = PAGE_ALIGN(((struct squashfs_super_block *)
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check_start)->bytes_used);
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return true;
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}
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#endif
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return false;
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}
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EXPORT_SYMBOL(get_ramroot);
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#endif
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