139 lines
4.0 KiB
C
139 lines
4.0 KiB
C
/*
|
|
*
|
|
* Procedures for firmware flash updates on pSeries systems.
|
|
*
|
|
* Peter Bergner, IBM March 2001.
|
|
* Copyright (C) 2001 IBM.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <stdarg.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/types.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <asm/prom.h>
|
|
#include <asm/rtas.h>
|
|
#include <asm/semaphore.h>
|
|
#include <asm/machdep.h>
|
|
#include <asm/page.h>
|
|
#include <asm/param.h>
|
|
#include <asm/system.h>
|
|
#include <asm/abs_addr.h>
|
|
#include <asm/udbg.h>
|
|
#include <asm/delay.h>
|
|
#include <asm/uaccess.h>
|
|
#include <asm/systemcfg.h>
|
|
|
|
#include "rtas-fw.h"
|
|
|
|
struct flash_block_list_header rtas_firmware_flash_list = {0, NULL};
|
|
|
|
#define FLASH_BLOCK_LIST_VERSION (1UL)
|
|
|
|
static void rtas_flash_firmware(void)
|
|
{
|
|
unsigned long image_size;
|
|
struct flash_block_list *f, *next, *flist;
|
|
unsigned long rtas_block_list;
|
|
int i, status, update_token;
|
|
|
|
update_token = rtas_token("ibm,update-flash-64-and-reboot");
|
|
if (update_token == RTAS_UNKNOWN_SERVICE) {
|
|
printk(KERN_ALERT "FLASH: ibm,update-flash-64-and-reboot is not available -- not a service partition?\n");
|
|
printk(KERN_ALERT "FLASH: firmware will not be flashed\n");
|
|
return;
|
|
}
|
|
|
|
/* NOTE: the "first" block list is a global var with no data
|
|
* blocks in the kernel data segment. We do this because
|
|
* we want to ensure this block_list addr is under 4GB.
|
|
*/
|
|
rtas_firmware_flash_list.num_blocks = 0;
|
|
flist = (struct flash_block_list *)&rtas_firmware_flash_list;
|
|
rtas_block_list = virt_to_abs(flist);
|
|
if (rtas_block_list >= 4UL*1024*1024*1024) {
|
|
printk(KERN_ALERT "FLASH: kernel bug...flash list header addr above 4GB\n");
|
|
return;
|
|
}
|
|
|
|
printk(KERN_ALERT "FLASH: preparing saved firmware image for flash\n");
|
|
/* Update the block_list in place. */
|
|
image_size = 0;
|
|
for (f = flist; f; f = next) {
|
|
/* Translate data addrs to absolute */
|
|
for (i = 0; i < f->num_blocks; i++) {
|
|
f->blocks[i].data = (char *)virt_to_abs(f->blocks[i].data);
|
|
image_size += f->blocks[i].length;
|
|
}
|
|
next = f->next;
|
|
/* Don't translate NULL pointer for last entry */
|
|
if (f->next)
|
|
f->next = (struct flash_block_list *)virt_to_abs(f->next);
|
|
else
|
|
f->next = NULL;
|
|
/* make num_blocks into the version/length field */
|
|
f->num_blocks = (FLASH_BLOCK_LIST_VERSION << 56) | ((f->num_blocks+1)*16);
|
|
}
|
|
|
|
printk(KERN_ALERT "FLASH: flash image is %ld bytes\n", image_size);
|
|
printk(KERN_ALERT "FLASH: performing flash and reboot\n");
|
|
rtas_progress("Flashing \n", 0x0);
|
|
rtas_progress("Please Wait... ", 0x0);
|
|
printk(KERN_ALERT "FLASH: this will take several minutes. Do not power off!\n");
|
|
status = rtas_call(update_token, 1, 1, NULL, rtas_block_list);
|
|
switch (status) { /* should only get "bad" status */
|
|
case 0:
|
|
printk(KERN_ALERT "FLASH: success\n");
|
|
break;
|
|
case -1:
|
|
printk(KERN_ALERT "FLASH: hardware error. Firmware may not be not flashed\n");
|
|
break;
|
|
case -3:
|
|
printk(KERN_ALERT "FLASH: image is corrupt or not correct for this platform. Firmware not flashed\n");
|
|
break;
|
|
case -4:
|
|
printk(KERN_ALERT "FLASH: flash failed when partially complete. System may not reboot\n");
|
|
break;
|
|
default:
|
|
printk(KERN_ALERT "FLASH: unknown flash return code %d\n", status);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void rtas_flash_bypass_warning(void)
|
|
{
|
|
printk(KERN_ALERT "FLASH: firmware flash requires a reboot\n");
|
|
printk(KERN_ALERT "FLASH: the firmware image will NOT be flashed\n");
|
|
}
|
|
|
|
|
|
void rtas_fw_restart(char *cmd)
|
|
{
|
|
if (rtas_firmware_flash_list.next)
|
|
rtas_flash_firmware();
|
|
rtas_restart(cmd);
|
|
}
|
|
|
|
void rtas_fw_power_off(void)
|
|
{
|
|
if (rtas_firmware_flash_list.next)
|
|
rtas_flash_bypass_warning();
|
|
rtas_power_off();
|
|
}
|
|
|
|
void rtas_fw_halt(void)
|
|
{
|
|
if (rtas_firmware_flash_list.next)
|
|
rtas_flash_bypass_warning();
|
|
rtas_halt();
|
|
}
|
|
|
|
EXPORT_SYMBOL(rtas_firmware_flash_list);
|