2 * c 2001 PPC 64 Team, IBM Corp
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 * /proc/powerpc/rtas/firmware_flash interface
11 * This file implements a firmware_flash interface to pump a firmware
12 * image into the kernel. At reboot time rtas_restart() will see the
13 * firmware image and flash it as it reboots (see rtas.c).
16 #include <linux/module.h>
17 #include <linux/init.h>
18 #include <linux/slab.h>
19 #include <linux/proc_fs.h>
20 #include <asm/delay.h>
21 #include <asm/uaccess.h>
23 #include <asm/abs_addr.h>
25 #define MODULE_VERS "1.0"
26 #define MODULE_NAME "rtas_flash"
28 #define FIRMWARE_FLASH_NAME "firmware_flash"
29 #define FIRMWARE_UPDATE_NAME "firmware_update"
30 #define MANAGE_FLASH_NAME "manage_flash"
31 #define VALIDATE_FLASH_NAME "validate_flash"
33 /* General RTAS Status Codes */
34 #define RTAS_RC_SUCCESS 0
35 #define RTAS_RC_HW_ERR -1
36 #define RTAS_RC_BUSY -2
38 /* Flash image status values */
39 #define FLASH_AUTH -9002 /* RTAS Not Service Authority Partition */
40 #define FLASH_NO_OP -1099 /* No operation initiated by user */
41 #define FLASH_IMG_SHORT -1005 /* Flash image shorter than expected */
42 #define FLASH_IMG_BAD_LEN -1004 /* Bad length value in flash list block */
43 #define FLASH_IMG_NULL_DATA -1003 /* Bad data value in flash list block */
44 #define FLASH_IMG_READY 0 /* Firmware img ready for flash on reboot */
46 /* Manage image status values */
47 #define MANAGE_AUTH -9002 /* RTAS Not Service Authority Partition */
48 #define MANAGE_ACTIVE_ERR -9001 /* RTAS Cannot Overwrite Active Img */
49 #define MANAGE_NO_OP -1099 /* No operation initiated by user */
50 #define MANAGE_PARAM_ERR -3 /* RTAS Parameter Error */
51 #define MANAGE_HW_ERR -1 /* RTAS Hardware Error */
53 /* Validate image status values */
54 #define VALIDATE_AUTH -9002 /* RTAS Not Service Authority Partition */
55 #define VALIDATE_NO_OP -1099 /* No operation initiated by the user */
56 #define VALIDATE_INCOMPLETE -1002 /* User copied < VALIDATE_BUF_SIZE */
57 #define VALIDATE_READY -1001 /* Firmware image ready for validation */
58 #define VALIDATE_PARAM_ERR -3 /* RTAS Parameter Error */
59 #define VALIDATE_HW_ERR -1 /* RTAS Hardware Error */
60 #define VALIDATE_TMP_UPDATE 0 /* Validate Return Status */
61 #define VALIDATE_FLASH_AUTH 1 /* Validate Return Status */
62 #define VALIDATE_INVALID_IMG 2 /* Validate Return Status */
63 #define VALIDATE_CUR_UNKNOWN 3 /* Validate Return Status */
64 #define VALIDATE_TMP_COMMIT_DL 4 /* Validate Return Status */
65 #define VALIDATE_TMP_COMMIT 5 /* Validate Return Status */
66 #define VALIDATE_TMP_UPDATE_DL 6 /* Validate Return Status */
68 /* ibm,manage-flash-image operation tokens */
69 #define RTAS_REJECT_TMP_IMG 0
70 #define RTAS_COMMIT_TMP_IMG 1
73 #define VALIDATE_BUF_SIZE 4096
74 #define RTAS_MSG_MAXLEN 64
76 /* Quirk - RTAS requires 4k list length and block size */
77 #define RTAS_BLKLIST_LENGTH 4096
78 #define RTAS_BLK_SIZE 4096
85 /* This struct is very similar but not identical to
86 * that needed by the rtas flash update.
87 * All we need to do for rtas is rewrite num_blocks
88 * into a version/length and translate the pointers
91 #define FLASH_BLOCKS_PER_NODE ((RTAS_BLKLIST_LENGTH - 16) / sizeof(struct flash_block))
92 struct flash_block_list
{
93 unsigned long num_blocks
;
94 struct flash_block_list
*next
;
95 struct flash_block blocks
[FLASH_BLOCKS_PER_NODE
];
97 struct flash_block_list_header
{ /* just the header of flash_block_list */
98 unsigned long num_blocks
;
99 struct flash_block_list
*next
;
102 static struct flash_block_list_header rtas_firmware_flash_list
= {0, NULL
};
104 /* Use slab cache to guarantee 4k alignment */
105 static struct kmem_cache
*flash_block_cache
= NULL
;
107 #define FLASH_BLOCK_LIST_VERSION (1UL)
109 /* Local copy of the flash block list.
110 * We only allow one open of the flash proc file and create this
111 * list as we go. This list will be put in the
112 * rtas_firmware_flash_list var once it is fully read.
114 * For convenience as we build the list we use virtual addrs,
115 * we do not fill in the version number, and the length field
116 * is treated as the number of entries currently in the block
117 * (i.e. not a byte count). This is all fixed on release.
120 /* Status int must be first member of struct */
121 struct rtas_update_flash_t
123 int status
; /* Flash update status */
124 struct flash_block_list
*flist
; /* Local copy of flash block list */
127 /* Status int must be first member of struct */
128 struct rtas_manage_flash_t
130 int status
; /* Returned status */
131 unsigned int op
; /* Reject or commit image */
134 /* Status int must be first member of struct */
135 struct rtas_validate_flash_t
137 int status
; /* Returned status */
138 char buf
[VALIDATE_BUF_SIZE
]; /* Candidate image buffer */
139 unsigned int buf_size
; /* Size of image buf */
140 unsigned int update_results
; /* Update results token */
143 static DEFINE_SPINLOCK(flash_file_open_lock
);
144 static struct proc_dir_entry
*firmware_flash_pde
;
145 static struct proc_dir_entry
*firmware_update_pde
;
146 static struct proc_dir_entry
*validate_pde
;
147 static struct proc_dir_entry
*manage_pde
;
149 /* Do simple sanity checks on the flash image. */
150 static int flash_list_valid(struct flash_block_list
*flist
)
152 struct flash_block_list
*f
;
154 unsigned long block_size
, image_size
;
156 /* Paranoid self test here. We also collect the image size. */
158 for (f
= flist
; f
; f
= f
->next
) {
159 for (i
= 0; i
< f
->num_blocks
; i
++) {
160 if (f
->blocks
[i
].data
== NULL
) {
161 return FLASH_IMG_NULL_DATA
;
163 block_size
= f
->blocks
[i
].length
;
164 if (block_size
<= 0 || block_size
> RTAS_BLK_SIZE
) {
165 return FLASH_IMG_BAD_LEN
;
167 image_size
+= block_size
;
171 if (image_size
< (256 << 10)) {
176 printk(KERN_INFO
"FLASH: flash image with %ld bytes stored for hardware flash on reboot\n", image_size
);
178 return FLASH_IMG_READY
;
181 static void free_flash_list(struct flash_block_list
*f
)
183 struct flash_block_list
*next
;
187 for (i
= 0; i
< f
->num_blocks
; i
++)
188 kmem_cache_free(flash_block_cache
, f
->blocks
[i
].data
);
190 kmem_cache_free(flash_block_cache
, f
);
195 static int rtas_flash_release(struct inode
*inode
, struct file
*file
)
197 struct proc_dir_entry
*dp
= PDE(file
->f_path
.dentry
->d_inode
);
198 struct rtas_update_flash_t
*uf
;
200 uf
= (struct rtas_update_flash_t
*) dp
->data
;
202 /* File was opened in write mode for a new flash attempt */
203 /* Clear saved list */
204 if (rtas_firmware_flash_list
.next
) {
205 free_flash_list(rtas_firmware_flash_list
.next
);
206 rtas_firmware_flash_list
.next
= NULL
;
209 if (uf
->status
!= FLASH_AUTH
)
210 uf
->status
= flash_list_valid(uf
->flist
);
212 if (uf
->status
== FLASH_IMG_READY
)
213 rtas_firmware_flash_list
.next
= uf
->flist
;
215 free_flash_list(uf
->flist
);
220 atomic_dec(&dp
->count
);
224 static void get_flash_status_msg(int status
, char *buf
)
230 msg
= "error: this partition does not have service authority\n";
233 msg
= "info: no firmware image for flash\n";
235 case FLASH_IMG_SHORT
:
236 msg
= "error: flash image short\n";
238 case FLASH_IMG_BAD_LEN
:
239 msg
= "error: internal error bad length\n";
241 case FLASH_IMG_NULL_DATA
:
242 msg
= "error: internal error null data\n";
244 case FLASH_IMG_READY
:
245 msg
= "ready: firmware image ready for flash on reboot\n";
248 sprintf(buf
, "error: unexpected status value %d\n", status
);
255 /* Reading the proc file will show status (not the firmware contents) */
256 static ssize_t
rtas_flash_read(struct file
*file
, char __user
*buf
,
257 size_t count
, loff_t
*ppos
)
259 struct proc_dir_entry
*dp
= PDE(file
->f_path
.dentry
->d_inode
);
260 struct rtas_update_flash_t
*uf
;
261 char msg
[RTAS_MSG_MAXLEN
];
264 uf
= (struct rtas_update_flash_t
*) dp
->data
;
266 if (!strcmp(dp
->name
, FIRMWARE_FLASH_NAME
)) {
267 get_flash_status_msg(uf
->status
, msg
);
268 } else { /* FIRMWARE_UPDATE_NAME */
269 sprintf(msg
, "%d\n", uf
->status
);
271 msglen
= strlen(msg
);
275 if (ppos
&& *ppos
!= 0)
276 return 0; /* be cheap */
278 if (!access_ok(VERIFY_WRITE
, buf
, msglen
))
281 if (copy_to_user(buf
, msg
, msglen
))
289 /* constructor for flash_block_cache */
290 void rtas_block_ctor(void *ptr
)
292 memset(ptr
, 0, RTAS_BLK_SIZE
);
295 /* We could be much more efficient here. But to keep this function
296 * simple we allocate a page to the block list no matter how small the
297 * count is. If the system is low on memory it will be just as well
300 static ssize_t
rtas_flash_write(struct file
*file
, const char __user
*buffer
,
301 size_t count
, loff_t
*off
)
303 struct proc_dir_entry
*dp
= PDE(file
->f_path
.dentry
->d_inode
);
304 struct rtas_update_flash_t
*uf
;
307 struct flash_block_list
*fl
;
309 uf
= (struct rtas_update_flash_t
*) dp
->data
;
311 if (uf
->status
== FLASH_AUTH
|| count
== 0)
312 return count
; /* discard data */
314 /* In the case that the image is not ready for flashing, the memory
315 * allocated for the block list will be freed upon the release of the
318 if (uf
->flist
== NULL
) {
319 uf
->flist
= kmem_cache_alloc(flash_block_cache
, GFP_KERNEL
);
326 fl
= fl
->next
; /* seek to last block_list for append */
327 next_free
= fl
->num_blocks
;
328 if (next_free
== FLASH_BLOCKS_PER_NODE
) {
329 /* Need to allocate another block_list */
330 fl
->next
= kmem_cache_alloc(flash_block_cache
, GFP_KERNEL
);
337 if (count
> RTAS_BLK_SIZE
)
338 count
= RTAS_BLK_SIZE
;
339 p
= kmem_cache_alloc(flash_block_cache
, GFP_KERNEL
);
343 if(copy_from_user(p
, buffer
, count
)) {
344 kmem_cache_free(flash_block_cache
, p
);
347 fl
->blocks
[next_free
].data
= p
;
348 fl
->blocks
[next_free
].length
= count
;
354 static int rtas_excl_open(struct inode
*inode
, struct file
*file
)
356 struct proc_dir_entry
*dp
= PDE(inode
);
358 /* Enforce exclusive open with use count of PDE */
359 spin_lock(&flash_file_open_lock
);
360 if (atomic_read(&dp
->count
) > 2) {
361 spin_unlock(&flash_file_open_lock
);
365 atomic_inc(&dp
->count
);
366 spin_unlock(&flash_file_open_lock
);
371 static int rtas_excl_release(struct inode
*inode
, struct file
*file
)
373 struct proc_dir_entry
*dp
= PDE(inode
);
375 atomic_dec(&dp
->count
);
380 static void manage_flash(struct rtas_manage_flash_t
*args_buf
)
385 rc
= rtas_call(rtas_token("ibm,manage-flash-image"), 1,
386 1, NULL
, args_buf
->op
);
387 } while (rtas_busy_delay(rc
));
389 args_buf
->status
= rc
;
392 static ssize_t
manage_flash_read(struct file
*file
, char __user
*buf
,
393 size_t count
, loff_t
*ppos
)
395 struct proc_dir_entry
*dp
= PDE(file
->f_path
.dentry
->d_inode
);
396 struct rtas_manage_flash_t
*args_buf
;
397 char msg
[RTAS_MSG_MAXLEN
];
400 args_buf
= (struct rtas_manage_flash_t
*) dp
->data
;
401 if (args_buf
== NULL
)
404 msglen
= sprintf(msg
, "%d\n", args_buf
->status
);
408 if (ppos
&& *ppos
!= 0)
409 return 0; /* be cheap */
411 if (!access_ok(VERIFY_WRITE
, buf
, msglen
))
414 if (copy_to_user(buf
, msg
, msglen
))
422 static ssize_t
manage_flash_write(struct file
*file
, const char __user
*buf
,
423 size_t count
, loff_t
*off
)
425 struct proc_dir_entry
*dp
= PDE(file
->f_path
.dentry
->d_inode
);
426 struct rtas_manage_flash_t
*args_buf
;
427 const char reject_str
[] = "0";
428 const char commit_str
[] = "1";
432 args_buf
= (struct rtas_manage_flash_t
*) dp
->data
;
433 if ((args_buf
->status
== MANAGE_AUTH
) || (count
== 0))
438 if (count
> 9) count
= 9;
439 if (copy_from_user (stkbuf
, buf
, count
)) {
442 if (strncmp(stkbuf
, reject_str
, strlen(reject_str
)) == 0)
443 op
= RTAS_REJECT_TMP_IMG
;
444 else if (strncmp(stkbuf
, commit_str
, strlen(commit_str
)) == 0)
445 op
= RTAS_COMMIT_TMP_IMG
;
448 if (op
== -1) /* buf is empty, or contains invalid string */
452 manage_flash(args_buf
);
457 static void validate_flash(struct rtas_validate_flash_t
*args_buf
)
459 int token
= rtas_token("ibm,validate-flash-image");
465 spin_lock(&rtas_data_buf_lock
);
466 memcpy(rtas_data_buf
, args_buf
->buf
, VALIDATE_BUF_SIZE
);
467 rc
= rtas_call(token
, 2, 2, &update_results
,
468 (u32
) __pa(rtas_data_buf
), args_buf
->buf_size
);
469 memcpy(args_buf
->buf
, rtas_data_buf
, VALIDATE_BUF_SIZE
);
470 spin_unlock(&rtas_data_buf_lock
);
471 } while (rtas_busy_delay(rc
));
473 args_buf
->status
= rc
;
474 args_buf
->update_results
= update_results
;
477 static int get_validate_flash_msg(struct rtas_validate_flash_t
*args_buf
,
482 if (args_buf
->status
>= VALIDATE_TMP_UPDATE
) {
483 n
= sprintf(msg
, "%d\n", args_buf
->update_results
);
484 if ((args_buf
->update_results
>= VALIDATE_CUR_UNKNOWN
) ||
485 (args_buf
->update_results
== VALIDATE_TMP_UPDATE
))
486 n
+= sprintf(msg
+ n
, "%s\n", args_buf
->buf
);
488 n
= sprintf(msg
, "%d\n", args_buf
->status
);
493 static ssize_t
validate_flash_read(struct file
*file
, char __user
*buf
,
494 size_t count
, loff_t
*ppos
)
496 struct proc_dir_entry
*dp
= PDE(file
->f_path
.dentry
->d_inode
);
497 struct rtas_validate_flash_t
*args_buf
;
498 char msg
[RTAS_MSG_MAXLEN
];
501 args_buf
= (struct rtas_validate_flash_t
*) dp
->data
;
503 if (ppos
&& *ppos
!= 0)
504 return 0; /* be cheap */
506 msglen
= get_validate_flash_msg(args_buf
, msg
);
510 if (!access_ok(VERIFY_WRITE
, buf
, msglen
))
513 if (copy_to_user(buf
, msg
, msglen
))
521 static ssize_t
validate_flash_write(struct file
*file
, const char __user
*buf
,
522 size_t count
, loff_t
*off
)
524 struct proc_dir_entry
*dp
= PDE(file
->f_path
.dentry
->d_inode
);
525 struct rtas_validate_flash_t
*args_buf
;
528 args_buf
= (struct rtas_validate_flash_t
*) dp
->data
;
530 if (dp
->data
== NULL
) {
531 dp
->data
= kmalloc(sizeof(struct rtas_validate_flash_t
),
533 if (dp
->data
== NULL
)
537 /* We are only interested in the first 4K of the
539 if ((*off
>= VALIDATE_BUF_SIZE
) ||
540 (args_buf
->status
== VALIDATE_AUTH
)) {
545 if (*off
+ count
>= VALIDATE_BUF_SIZE
) {
546 count
= VALIDATE_BUF_SIZE
- *off
;
547 args_buf
->status
= VALIDATE_READY
;
549 args_buf
->status
= VALIDATE_INCOMPLETE
;
552 if (!access_ok(VERIFY_READ
, buf
, count
)) {
556 if (copy_from_user(args_buf
->buf
+ *off
, buf
, count
)) {
571 static int validate_flash_release(struct inode
*inode
, struct file
*file
)
573 struct proc_dir_entry
*dp
= PDE(file
->f_path
.dentry
->d_inode
);
574 struct rtas_validate_flash_t
*args_buf
;
576 args_buf
= (struct rtas_validate_flash_t
*) dp
->data
;
578 if (args_buf
->status
== VALIDATE_READY
) {
579 args_buf
->buf_size
= VALIDATE_BUF_SIZE
;
580 validate_flash(args_buf
);
583 /* The matching atomic_inc was in rtas_excl_open() */
584 atomic_dec(&dp
->count
);
589 static void rtas_flash_firmware(int reboot_type
)
591 unsigned long image_size
;
592 struct flash_block_list
*f
, *next
, *flist
;
593 unsigned long rtas_block_list
;
594 int i
, status
, update_token
;
596 if (rtas_firmware_flash_list
.next
== NULL
)
597 return; /* nothing to do */
599 if (reboot_type
!= SYS_RESTART
) {
600 printk(KERN_ALERT
"FLASH: firmware flash requires a reboot\n");
601 printk(KERN_ALERT
"FLASH: the firmware image will NOT be flashed\n");
605 update_token
= rtas_token("ibm,update-flash-64-and-reboot");
606 if (update_token
== RTAS_UNKNOWN_SERVICE
) {
607 printk(KERN_ALERT
"FLASH: ibm,update-flash-64-and-reboot "
608 "is not available -- not a service partition?\n");
609 printk(KERN_ALERT
"FLASH: firmware will not be flashed\n");
613 /* NOTE: the "first" block list is a global var with no data
614 * blocks in the kernel data segment. We do this because
615 * we want to ensure this block_list addr is under 4GB.
617 rtas_firmware_flash_list
.num_blocks
= 0;
618 flist
= (struct flash_block_list
*)&rtas_firmware_flash_list
;
619 rtas_block_list
= virt_to_abs(flist
);
620 if (rtas_block_list
>= 4UL*1024*1024*1024) {
621 printk(KERN_ALERT
"FLASH: kernel bug...flash list header addr above 4GB\n");
625 printk(KERN_ALERT
"FLASH: preparing saved firmware image for flash\n");
626 /* Update the block_list in place. */
628 for (f
= flist
; f
; f
= next
) {
629 /* Translate data addrs to absolute */
630 for (i
= 0; i
< f
->num_blocks
; i
++) {
631 f
->blocks
[i
].data
= (char *)virt_to_abs(f
->blocks
[i
].data
);
632 image_size
+= f
->blocks
[i
].length
;
635 /* Don't translate NULL pointer for last entry */
637 f
->next
= (struct flash_block_list
*)virt_to_abs(f
->next
);
640 /* make num_blocks into the version/length field */
641 f
->num_blocks
= (FLASH_BLOCK_LIST_VERSION
<< 56) | ((f
->num_blocks
+1)*16);
644 printk(KERN_ALERT
"FLASH: flash image is %ld bytes\n", image_size
);
645 printk(KERN_ALERT
"FLASH: performing flash and reboot\n");
646 rtas_progress("Flashing \n", 0x0);
647 rtas_progress("Please Wait... ", 0x0);
648 printk(KERN_ALERT
"FLASH: this will take several minutes. Do not power off!\n");
649 status
= rtas_call(update_token
, 1, 1, NULL
, rtas_block_list
);
650 switch (status
) { /* should only get "bad" status */
652 printk(KERN_ALERT
"FLASH: success\n");
655 printk(KERN_ALERT
"FLASH: hardware error. Firmware may not be not flashed\n");
658 printk(KERN_ALERT
"FLASH: image is corrupt or not correct for this platform. Firmware not flashed\n");
661 printk(KERN_ALERT
"FLASH: flash failed when partially complete. System may not reboot\n");
664 printk(KERN_ALERT
"FLASH: unknown flash return code %d\n", status
);
669 static void remove_flash_pde(struct proc_dir_entry
*dp
)
673 remove_proc_entry(dp
->name
, dp
->parent
);
677 static int initialize_flash_pde_data(const char *rtas_call_name
,
679 struct proc_dir_entry
*dp
)
684 dp
->data
= kzalloc(buf_size
, GFP_KERNEL
);
685 if (dp
->data
== NULL
) {
686 remove_flash_pde(dp
);
691 * This code assumes that the status int is the first member of the
694 status
= (int *) dp
->data
;
695 token
= rtas_token(rtas_call_name
);
696 if (token
== RTAS_UNKNOWN_SERVICE
)
697 *status
= FLASH_AUTH
;
699 *status
= FLASH_NO_OP
;
704 static struct proc_dir_entry
*create_flash_pde(const char *filename
,
705 const struct file_operations
*fops
)
707 return proc_create(filename
, S_IRUSR
| S_IWUSR
, NULL
, fops
);
710 static const struct file_operations rtas_flash_operations
= {
711 .owner
= THIS_MODULE
,
712 .read
= rtas_flash_read
,
713 .write
= rtas_flash_write
,
714 .open
= rtas_excl_open
,
715 .release
= rtas_flash_release
,
718 static const struct file_operations manage_flash_operations
= {
719 .owner
= THIS_MODULE
,
720 .read
= manage_flash_read
,
721 .write
= manage_flash_write
,
722 .open
= rtas_excl_open
,
723 .release
= rtas_excl_release
,
726 static const struct file_operations validate_flash_operations
= {
727 .owner
= THIS_MODULE
,
728 .read
= validate_flash_read
,
729 .write
= validate_flash_write
,
730 .open
= rtas_excl_open
,
731 .release
= validate_flash_release
,
734 static int __init
rtas_flash_init(void)
738 if (rtas_token("ibm,update-flash-64-and-reboot") ==
739 RTAS_UNKNOWN_SERVICE
) {
740 printk(KERN_ERR
"rtas_flash: no firmware flash support\n");
744 firmware_flash_pde
= create_flash_pde("powerpc/rtas/"
746 &rtas_flash_operations
);
747 if (firmware_flash_pde
== NULL
) {
752 rc
= initialize_flash_pde_data("ibm,update-flash-64-and-reboot",
753 sizeof(struct rtas_update_flash_t
),
758 firmware_update_pde
= create_flash_pde("powerpc/rtas/"
759 FIRMWARE_UPDATE_NAME
,
760 &rtas_flash_operations
);
761 if (firmware_update_pde
== NULL
) {
766 rc
= initialize_flash_pde_data("ibm,update-flash-64-and-reboot",
767 sizeof(struct rtas_update_flash_t
),
768 firmware_update_pde
);
772 validate_pde
= create_flash_pde("powerpc/rtas/" VALIDATE_FLASH_NAME
,
773 &validate_flash_operations
);
774 if (validate_pde
== NULL
) {
779 rc
= initialize_flash_pde_data("ibm,validate-flash-image",
780 sizeof(struct rtas_validate_flash_t
),
785 manage_pde
= create_flash_pde("powerpc/rtas/" MANAGE_FLASH_NAME
,
786 &manage_flash_operations
);
787 if (manage_pde
== NULL
) {
792 rc
= initialize_flash_pde_data("ibm,manage-flash-image",
793 sizeof(struct rtas_manage_flash_t
),
798 rtas_flash_term_hook
= rtas_flash_firmware
;
800 flash_block_cache
= kmem_cache_create("rtas_flash_cache",
801 RTAS_BLK_SIZE
, RTAS_BLK_SIZE
, 0,
803 if (!flash_block_cache
) {
804 printk(KERN_ERR
"%s: failed to create block cache\n",
812 remove_flash_pde(firmware_flash_pde
);
813 remove_flash_pde(firmware_update_pde
);
814 remove_flash_pde(validate_pde
);
815 remove_flash_pde(manage_pde
);
820 static void __exit
rtas_flash_cleanup(void)
822 rtas_flash_term_hook
= NULL
;
824 if (flash_block_cache
)
825 kmem_cache_destroy(flash_block_cache
);
827 remove_flash_pde(firmware_flash_pde
);
828 remove_flash_pde(firmware_update_pde
);
829 remove_flash_pde(validate_pde
);
830 remove_flash_pde(manage_pde
);
833 module_init(rtas_flash_init
);
834 module_exit(rtas_flash_cleanup
);
835 MODULE_LICENSE("GPL");