mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-18 11:16:42 +07:00
[MTD] PMC MSP71xx flash/rootfs mappings
Add flash and rootfs mappings for the PMC-Sierra MSP71xx devices. This patch references some platform support files previously submitted to the linux-mips@linux-mips.org list. Signed-off-by: Marc St-Jean <Marc_St-Jean@pmc-sierra.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
Marc St-Jean
David Woodhouse
parent
9333907084
commit
68aa0fa87f
@ -69,6 +69,39 @@ config MTD_PHYSMAP_OF
|
||||
physically into the CPU's memory. The mapping description here is
|
||||
taken from OF device tree.
|
||||
|
||||
config MTD_PMC_MSP_EVM
|
||||
tristate "CFI Flash device mapped on PMC-Sierra MSP"
|
||||
depends on PMC_MSP && MTD_CFI
|
||||
select MTD_PARTITIONS
|
||||
help
|
||||
This provides a 'mapping' driver which support the way
|
||||
in which user-programmable flash chips are connected on the
|
||||
PMC-Sierra MSP eval/demo boards
|
||||
|
||||
choice
|
||||
prompt "Maximum mappable memory avialable for flash IO"
|
||||
depends on MTD_PMC_MSP_EVM
|
||||
default MSP_FLASH_MAP_LIMIT_32M
|
||||
|
||||
config MSP_FLASH_MAP_LIMIT_32M
|
||||
bool "32M"
|
||||
|
||||
endchoice
|
||||
|
||||
config MSP_FLASH_MAP_LIMIT
|
||||
hex
|
||||
default "0x02000000"
|
||||
depends on MSP_FLASH_MAP_LIMIT_32M
|
||||
|
||||
config MTD_PMC_MSP_RAMROOT
|
||||
tristate "Embedded RAM block device for root on PMC-Sierra MSP"
|
||||
depends on PMC_MSP_EMBEDDED_ROOTFS && \
|
||||
(MTD_BLOCK || MTD_BLOCK_RO) && \
|
||||
MTD_RAM
|
||||
help
|
||||
This provides support for the embedded root file system
|
||||
on PMC MSP devices. This memory is mapped as a MTD block device.
|
||||
|
||||
config MTD_SUN_UFLASH
|
||||
tristate "Sun Microsystems userflash support"
|
||||
depends on SPARC && MTD_CFI
|
||||
|
||||
@ -27,6 +27,8 @@ obj-$(CONFIG_MTD_CEIVA) += ceiva.o
|
||||
obj-$(CONFIG_MTD_OCTAGON) += octagon-5066.o
|
||||
obj-$(CONFIG_MTD_PHYSMAP) += physmap.o
|
||||
obj-$(CONFIG_MTD_PHYSMAP_OF) += physmap_of.o
|
||||
obj-$(CONFIG_MTD_PMC_MSP_EVM) += pmcmsp-flash.o
|
||||
obj-$(CONFIG_MTD_PMC_MSP_RAMROOT)+= pmcmsp-ramroot.o
|
||||
obj-$(CONFIG_MTD_PNC2000) += pnc2000.o
|
||||
obj-$(CONFIG_MTD_PCMCIA) += pcmciamtd.o
|
||||
obj-$(CONFIG_MTD_RPXLITE) += rpxlite.o
|
||||
|
||||
184
drivers/mtd/maps/pmcmsp-flash.c
Normal file
184
drivers/mtd/maps/pmcmsp-flash.c
Normal file
@ -0,0 +1,184 @@
|
||||
/*
|
||||
* Mapping of a custom board with both AMD CFI and JEDEC flash in partitions.
|
||||
* Config with both CFI and JEDEC device support.
|
||||
*
|
||||
* Basically physmap.c with the addition of partitions and
|
||||
* an array of mapping info to accomodate more than one flash type per board.
|
||||
*
|
||||
* Copyright 2005-2007 PMC-Sierra, Inc.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License as published by the
|
||||
* Free Software Foundation; either version 2 of the License, or (at your
|
||||
* option) any later version.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
||||
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
|
||||
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
||||
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
||||
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/mtd/mtd.h>
|
||||
#include <linux/mtd/map.h>
|
||||
#include <linux/mtd/partitions.h>
|
||||
|
||||
#include <asm/io.h>
|
||||
|
||||
#include <msp_prom.h>
|
||||
#include <msp_regs.h>
|
||||
|
||||
|
||||
static struct mtd_info **msp_flash;
|
||||
static struct mtd_partition **msp_parts;
|
||||
static struct map_info *msp_maps;
|
||||
static int fcnt;
|
||||
|
||||
#define DEBUG_MARKER printk(KERN_NOTICE "%s[%d]\n",__FUNCTION__,__LINE__)
|
||||
|
||||
int __init init_msp_flash(void)
|
||||
{
|
||||
int i, j;
|
||||
int offset, coff;
|
||||
char *env;
|
||||
int pcnt;
|
||||
char flash_name[] = "flash0";
|
||||
char part_name[] = "flash0_0";
|
||||
unsigned addr, size;
|
||||
|
||||
/* If ELB is disabled by "ful-mux" mode, we can't get at flash */
|
||||
if ((*DEV_ID_REG & DEV_ID_SINGLE_PC) &&
|
||||
(*ELB_1PC_EN_REG & SINGLE_PCCARD)) {
|
||||
printk(KERN_NOTICE "Single PC Card mode: no flash access\n");
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
/* examine the prom environment for flash devices */
|
||||
for (fcnt = 0; (env = prom_getenv(flash_name)); fcnt++)
|
||||
flash_name[5] = '0' + fcnt + 1;
|
||||
|
||||
if (fcnt < 1)
|
||||
return -ENXIO;
|
||||
|
||||
printk(KERN_NOTICE "Found %d PMC flash devices\n", fcnt);
|
||||
msp_flash = (struct mtd_info **)kmalloc(
|
||||
fcnt * sizeof(struct map_info *), GFP_KERNEL);
|
||||
msp_parts = (struct mtd_partition **)kmalloc(
|
||||
fcnt * sizeof(struct mtd_partition *), GFP_KERNEL);
|
||||
msp_maps = (struct map_info *)kmalloc(
|
||||
fcnt * sizeof(struct mtd_info), GFP_KERNEL);
|
||||
memset(msp_maps, 0, fcnt * sizeof(struct mtd_info));
|
||||
|
||||
/* loop over the flash devices, initializing each */
|
||||
for (i = 0; i < fcnt; i++) {
|
||||
/* examine the prom environment for flash partititions */
|
||||
part_name[5] = '0' + i;
|
||||
part_name[7] = '0';
|
||||
for (pcnt = 0; (env = prom_getenv(part_name)); pcnt++)
|
||||
part_name[7] = '0' + pcnt + 1;
|
||||
|
||||
if (pcnt == 0) {
|
||||
printk(KERN_NOTICE "Skipping flash device %d "
|
||||
"(no partitions defined)\n", i);
|
||||
continue;
|
||||
}
|
||||
|
||||
msp_parts[i] = (struct mtd_partition *)kmalloc(
|
||||
pcnt * sizeof(struct mtd_partition), GFP_KERNEL);
|
||||
memset(msp_parts[i], 0, pcnt * sizeof(struct mtd_partition));
|
||||
|
||||
/* now initialize the devices proper */
|
||||
flash_name[5] = '0' + i;
|
||||
env = prom_getenv(flash_name);
|
||||
|
||||
if (sscanf(env, "%x:%x", &addr, &size) < 2)
|
||||
return -ENXIO;
|
||||
addr = CPHYSADDR(addr);
|
||||
|
||||
printk(KERN_NOTICE
|
||||
"MSP flash device \"%s\": 0x%08x at 0x%08x\n",
|
||||
flash_name, size, addr);
|
||||
/* This must matchs the actual size of the flash chip */
|
||||
msp_maps[i].size = size;
|
||||
msp_maps[i].phys = addr;
|
||||
|
||||
/*
|
||||
* Platforms have a specific limit of the size of memory
|
||||
* which may be mapped for flash:
|
||||
*/
|
||||
if (size > CONFIG_MSP_FLASH_MAP_LIMIT)
|
||||
size = CONFIG_MSP_FLASH_MAP_LIMIT;
|
||||
msp_maps[i].virt = ioremap(addr, size);
|
||||
msp_maps[i].bankwidth = 1;
|
||||
msp_maps[i].name = strncpy(kmalloc(7, GFP_KERNEL),
|
||||
flash_name, 7);
|
||||
|
||||
if (msp_maps[i].virt == NULL)
|
||||
return -ENXIO;
|
||||
|
||||
for (j = 0; j < pcnt; j++) {
|
||||
part_name[5] = '0' + i;
|
||||
part_name[7] = '0' + j;
|
||||
|
||||
env = prom_getenv(part_name);
|
||||
|
||||
if (sscanf(env, "%x:%x:%n", &offset, &size, &coff) < 2)
|
||||
return -ENXIO;
|
||||
|
||||
msp_parts[i][j].size = size;
|
||||
msp_parts[i][j].offset = offset;
|
||||
msp_parts[i][j].name = env + coff;
|
||||
}
|
||||
|
||||
/* now probe and add the device */
|
||||
simple_map_init(&msp_maps[i]);
|
||||
msp_flash[i] = do_map_probe("cfi_probe", &msp_maps[i]);
|
||||
if (msp_flash[i]) {
|
||||
msp_flash[i]->owner = THIS_MODULE;
|
||||
add_mtd_partitions(msp_flash[i], msp_parts[i], pcnt);
|
||||
} else {
|
||||
printk(KERN_ERR "map probe failed for flash\n");
|
||||
return -ENXIO;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void __exit cleanup_msp_flash(void)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < sizeof(msp_flash) / sizeof(struct mtd_info **); i++) {
|
||||
del_mtd_partitions(msp_flash[i]);
|
||||
map_destroy(msp_flash[i]);
|
||||
iounmap((void *)msp_maps[i].virt);
|
||||
|
||||
/* free the memory */
|
||||
kfree(msp_maps[i].name);
|
||||
kfree(msp_parts[i]);
|
||||
}
|
||||
|
||||
kfree(msp_flash);
|
||||
kfree(msp_parts);
|
||||
kfree(msp_maps);
|
||||
}
|
||||
|
||||
MODULE_AUTHOR("PMC-Sierra, Inc");
|
||||
MODULE_DESCRIPTION("MTD map driver for PMC-Sierra MSP boards");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
module_init(init_msp_flash);
|
||||
module_exit(cleanup_msp_flash);
|
||||
105
drivers/mtd/maps/pmcmsp-ramroot.c
Normal file
105
drivers/mtd/maps/pmcmsp-ramroot.c
Normal file
@ -0,0 +1,105 @@
|
||||
/*
|
||||
* Mapping of the rootfs in a physical region of memory
|
||||
*
|
||||
* Copyright (C) 2005-2007 PMC-Sierra Inc.
|
||||
* Author: Andrew Hughes, Andrew_Hughes@pmc-sierra.com
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License as published by the
|
||||
* Free Software Foundation; either version 2 of the License, or (at your
|
||||
* option) any later version.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
||||
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
|
||||
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
||||
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
||||
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/root_dev.h>
|
||||
#include <linux/mtd/mtd.h>
|
||||
#include <linux/mtd/map.h>
|
||||
|
||||
#include <asm/io.h>
|
||||
|
||||
#include <msp_prom.h>
|
||||
|
||||
static struct mtd_info *rr_mtd;
|
||||
|
||||
struct map_info rr_map = {
|
||||
.name = "ramroot",
|
||||
.bankwidth = 4,
|
||||
};
|
||||
|
||||
static int __init init_rrmap(void)
|
||||
{
|
||||
void *ramroot_start;
|
||||
unsigned long ramroot_size;
|
||||
|
||||
/* Check for supported rootfs types */
|
||||
if (get_ramroot(&ramroot_start, &ramroot_size)) {
|
||||
rr_map.phys = CPHYSADDR(ramroot_start);
|
||||
rr_map.size = ramroot_size;
|
||||
|
||||
printk(KERN_NOTICE
|
||||
"PMC embedded root device: 0x%08lx @ 0x%08lx\n",
|
||||
rr_map.size, (unsigned long)rr_map.phys);
|
||||
} else {
|
||||
printk(KERN_ERR
|
||||
"init_rrmap: no supported embedded rootfs detected!\n");
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
/* Map rootfs to I/O space for block device driver */
|
||||
rr_map.virt = ioremap(rr_map.phys, rr_map.size);
|
||||
if (!rr_map.virt) {
|
||||
printk(KERN_ERR "Failed to ioremap\n");
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
simple_map_init(&rr_map);
|
||||
|
||||
rr_mtd = do_map_probe("map_ram", &rr_map);
|
||||
if (rr_mtd) {
|
||||
rr_mtd->owner = THIS_MODULE;
|
||||
|
||||
add_mtd_device(rr_mtd);
|
||||
ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, rr_mtd->index);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
iounmap(rr_map.virt);
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
static void __exit cleanup_rrmap(void)
|
||||
{
|
||||
del_mtd_device(rr_mtd);
|
||||
map_destroy(rr_mtd);
|
||||
|
||||
iounmap(rr_map.virt);
|
||||
rr_map.virt = NULL;
|
||||
}
|
||||
|
||||
MODULE_AUTHOR("PMC-Sierra, Inc");
|
||||
MODULE_DESCRIPTION("MTD map driver for embedded PMC-Sierra MSP filesystem");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
module_init(init_rrmap);
|
||||
module_exit(cleanup_rrmap);
|
||||
Loading…
Reference in New Issue
Block a user