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-rw-r--r--arch/s390/kernel/head.S10
-rw-r--r--arch/s390/kernel/head31.S4
-rw-r--r--arch/s390/kernel/head64.S4
-rw-r--r--arch/s390/kernel/setup.c41
-rw-r--r--include/asm-s390/setup.h2
5 files changed, 48 insertions, 13 deletions
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index adad8863ee2f..a6e9bdb53591 100644
--- a/arch/s390/kernel/head.S
+++ b/arch/s390/kernel/head.S
@@ -272,7 +272,7 @@ iplstart:
272# load parameter file from ipl device 272# load parameter file from ipl device
273# 273#
274.Lagain1: 274.Lagain1:
275 l %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) # ramdisk loc. is temp 275 l %r2,.Linitrd # ramdisk loc. is temp
276 bas %r14,.Lloader # load parameter file 276 bas %r14,.Lloader # load parameter file
277 ltr %r2,%r2 # got anything ? 277 ltr %r2,%r2 # got anything ?
278 bz .Lnopf 278 bz .Lnopf
@@ -280,7 +280,7 @@ iplstart:
280 bnh .Lnotrunc 280 bnh .Lnotrunc
281 la %r2,895 281 la %r2,895
282.Lnotrunc: 282.Lnotrunc:
283 l %r4,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) 283 l %r4,.Linitrd
284 clc 0(3,%r4),.L_hdr # if it is HDRx 284 clc 0(3,%r4),.L_hdr # if it is HDRx
285 bz .Lagain1 # skip dataset header 285 bz .Lagain1 # skip dataset header
286 clc 0(3,%r4),.L_eof # if it is EOFx 286 clc 0(3,%r4),.L_eof # if it is EOFx
@@ -323,14 +323,15 @@ iplstart:
323# load ramdisk from ipl device 323# load ramdisk from ipl device
324# 324#
325.Lagain2: 325.Lagain2:
326 l %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) # addr of ramdisk 326 l %r2,.Linitrd # addr of ramdisk
327 st %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12)
327 bas %r14,.Lloader # load ramdisk 328 bas %r14,.Lloader # load ramdisk
328 st %r2,INITRD_SIZE+ARCH_OFFSET-PARMAREA(%r12) # store size of ramdisk 329 st %r2,INITRD_SIZE+ARCH_OFFSET-PARMAREA(%r12) # store size of ramdisk
329 ltr %r2,%r2 330 ltr %r2,%r2
330 bnz .Lrdcont 331 bnz .Lrdcont
331 st %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) # no ramdisk found 332 st %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) # no ramdisk found
332.Lrdcont: 333.Lrdcont:
333 l %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) 334 l %r2,.Linitrd
334 335
335 clc 0(3,%r2),.L_hdr # skip HDRx and EOFx 336 clc 0(3,%r2),.L_hdr # skip HDRx and EOFx
336 bz .Lagain2 337 bz .Lagain2
@@ -379,6 +380,7 @@ iplstart:
379 l %r1,.Lstartup 380 l %r1,.Lstartup
380 br %r1 381 br %r1
381 382
383.Linitrd:.long _end + 0x400000 # default address of initrd
382.Lparm: .long PARMAREA 384.Lparm: .long PARMAREA
383.Lstartup: .long startup 385.Lstartup: .long startup
384.Lcvtab:.long _ebcasc # ebcdic to ascii table 386.Lcvtab:.long _ebcasc # ebcdic to ascii table
diff --git a/arch/s390/kernel/head31.S b/arch/s390/kernel/head31.S
index a4dc61f3285e..0e46077d7140 100644
--- a/arch/s390/kernel/head31.S
+++ b/arch/s390/kernel/head31.S
@@ -26,8 +26,8 @@ startup:basr %r13,0 # get base
26# 26#
27 .org PARMAREA 27 .org PARMAREA
28 .long 0,0 # IPL_DEVICE 28 .long 0,0 # IPL_DEVICE
29 .long 0,RAMDISK_ORIGIN # INITRD_START 29 .long 0,0 # INITRD_START
30 .long 0,RAMDISK_SIZE # INITRD_SIZE 30 .long 0,0 # INITRD_SIZE
31 31
32 .org COMMAND_LINE 32 .org COMMAND_LINE
33 .byte "root=/dev/ram0 ro" 33 .byte "root=/dev/ram0 ro"
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index 9d80c5b1ef95..3e0341acd04e 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -26,8 +26,8 @@ startup:basr %r13,0 # get base
26# 26#
27 .org PARMAREA 27 .org PARMAREA
28 .quad 0 # IPL_DEVICE 28 .quad 0 # IPL_DEVICE
29 .quad RAMDISK_ORIGIN # INITRD_START 29 .quad 0 # INITRD_START
30 .quad RAMDISK_SIZE # INITRD_SIZE 30 .quad 0 # INITRD_SIZE
31 31
32 .org COMMAND_LINE 32 .org COMMAND_LINE
33 .byte "root=/dev/ram0 ro" 33 .byte "root=/dev/ram0 ro"
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index c902f059c7aa..89051e8a5d8d 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -37,6 +37,7 @@
37#include <linux/kernel_stat.h> 37#include <linux/kernel_stat.h>
38#include <linux/device.h> 38#include <linux/device.h>
39#include <linux/notifier.h> 39#include <linux/notifier.h>
40#include <linux/pfn.h>
40 41
41#include <asm/uaccess.h> 42#include <asm/uaccess.h>
42#include <asm/system.h> 43#include <asm/system.h>
@@ -501,13 +502,47 @@ setup_memory(void)
501 * partially used pages are not usable - thus 502 * partially used pages are not usable - thus
502 * we are rounding upwards: 503 * we are rounding upwards:
503 */ 504 */
504 start_pfn = (__pa(&_end) + PAGE_SIZE - 1) >> PAGE_SHIFT; 505 start_pfn = PFN_UP(__pa(&_end));
505 end_pfn = max_pfn = memory_end >> PAGE_SHIFT; 506 end_pfn = max_pfn = PFN_DOWN(memory_end);
506 507
507 /* Initialize storage key for kernel pages */ 508 /* Initialize storage key for kernel pages */
508 for (init_pfn = 0 ; init_pfn < start_pfn; init_pfn++) 509 for (init_pfn = 0 ; init_pfn < start_pfn; init_pfn++)
509 page_set_storage_key(init_pfn << PAGE_SHIFT, PAGE_DEFAULT_KEY); 510 page_set_storage_key(init_pfn << PAGE_SHIFT, PAGE_DEFAULT_KEY);
510 511
512#ifdef CONFIG_BLK_DEV_INITRD
513 /*
514 * Move the initrd in case the bitmap of the bootmem allocater
515 * would overwrite it.
516 */
517
518 if (INITRD_START && INITRD_SIZE) {
519 unsigned long bmap_size;
520 unsigned long start;
521
522 bmap_size = bootmem_bootmap_pages(end_pfn - start_pfn + 1);
523 bmap_size = PFN_PHYS(bmap_size);
524
525 if (PFN_PHYS(start_pfn) + bmap_size > INITRD_START) {
526 start = PFN_PHYS(start_pfn) + bmap_size + PAGE_SIZE;
527
528 if (start + INITRD_SIZE > memory_end) {
529 printk("initrd extends beyond end of memory "
530 "(0x%08lx > 0x%08lx)\n"
531 "disabling initrd\n",
532 start + INITRD_SIZE, memory_end);
533 INITRD_START = INITRD_SIZE = 0;
534 } else {
535 printk("Moving initrd (0x%08lx -> 0x%08lx, "
536 "size: %ld)\n",
537 INITRD_START, start, INITRD_SIZE);
538 memmove((void *) start, (void *) INITRD_START,
539 INITRD_SIZE);
540 INITRD_START = start;
541 }
542 }
543 }
544#endif
545
511 /* 546 /*
512 * Initialize the boot-time allocator (with low memory only): 547 * Initialize the boot-time allocator (with low memory only):
513 */ 548 */
@@ -559,7 +594,7 @@ setup_memory(void)
559 reserve_bootmem(start_pfn << PAGE_SHIFT, bootmap_size); 594 reserve_bootmem(start_pfn << PAGE_SHIFT, bootmap_size);
560 595
561#ifdef CONFIG_BLK_DEV_INITRD 596#ifdef CONFIG_BLK_DEV_INITRD
562 if (INITRD_START) { 597 if (INITRD_START && INITRD_SIZE) {
563 if (INITRD_START + INITRD_SIZE <= memory_end) { 598 if (INITRD_START + INITRD_SIZE <= memory_end) {
564 reserve_bootmem(INITRD_START, INITRD_SIZE); 599 reserve_bootmem(INITRD_START, INITRD_SIZE);
565 initrd_start = INITRD_START; 600 initrd_start = INITRD_START;
diff --git a/include/asm-s390/setup.h b/include/asm-s390/setup.h
index 19e31979309a..02c96d57f0cf 100644
--- a/include/asm-s390/setup.h
+++ b/include/asm-s390/setup.h
@@ -14,8 +14,6 @@
14 14
15#define PARMAREA 0x10400 15#define PARMAREA 0x10400
16#define COMMAND_LINE_SIZE 896 16#define COMMAND_LINE_SIZE 896
17#define RAMDISK_ORIGIN 0x800000
18#define RAMDISK_SIZE 0x800000
19#define MEMORY_CHUNKS 16 /* max 0x7fff */ 17#define MEMORY_CHUNKS 16 /* max 0x7fff */
20#define IPL_PARMBLOCK_ORIGIN 0x2000 18#define IPL_PARMBLOCK_ORIGIN 0x2000
21 19
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-02 06:57:42 -0500