void parse_boot_command_line(void);
void verify_facilities(void);
void print_missing_facilities(void);
+void sclp_early_setup_buffer(void);
void print_pgm_check_info(void);
unsigned long get_random_base(unsigned long safe_addr);
void __printf(1, 2) decompressor_printk(const char *fmt, ...);
#include <asm/vmlinux.lds.h>
#include <asm/thread_info.h>
#include <asm/page.h>
+#include <asm/sclp.h>
OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
OUTPUT_ARCH(s390:64-bit)
KEEP(*(.dma.ex_table))
_stop_dma_ex_table = .;
}
- .dma.data : { *(.dma.data) }
+ .dma.data : {
+ *(.dma.data)
+ }
. = ALIGN(PAGE_SIZE);
_edma = .;
spt 6f-.LPG0(%r13)
mvc __LC_LAST_UPDATE_TIMER(8),6f-.LPG0(%r13)
larl %r15,_stack_end-STACK_FRAME_OVERHEAD
+ brasl %r14,sclp_early_setup_buffer
brasl %r14,verify_facilities
brasl %r14,startup_kernel
SYM_CODE_END(startup_normal)
.org PARMAREA+__PARMAREA_SIZE
SYM_DATA_END(parmarea)
- .org EARLY_SCCB_OFFSET
- .fill EXT_SCCB_READ_SCP
-
.org HEAD_END
// SPDX-License-Identifier: GPL-2.0
+#include "boot.h"
#include "../../../drivers/s390/char/sclp_early_core.c"
+
+/* SCLP early buffer must stay page-aligned and below 2GB */
+static char __sclp_early_sccb[EXT_SCCB_READ_SCP] __aligned(PAGE_SIZE);
+
+void sclp_early_setup_buffer(void)
+{
+ sclp_early_set_buffer(&__sclp_early_sccb);
+}
u8 data[0]; /* Subsequent Data passed verbatim to SCLP ET 24 */
} __packed;
+void sclp_early_set_buffer(void *sccb);
int sclp_early_read_info(void);
int sclp_early_read_storage_info(void);
int sclp_early_get_core_info(struct sclp_core_info *info);
#define _ASM_S390_SETUP_H
#include <linux/bits.h>
-#include <asm/sclp.h>
#include <uapi/asm/setup.h>
#include <linux/build_bug.h>
#define EP_OFFSET 0x10008
#define EP_STRING "S390EP"
#define PARMAREA 0x10400
-#define EARLY_SCCB_OFFSET 0x11000
-#define HEAD_END (EARLY_SCCB_OFFSET + EXT_SCCB_READ_SCP)
+#define HEAD_END 0x11000
/*
* Machine features detected in early.c
static struct read_info_sccb __bootdata(sclp_info_sccb);
static int __bootdata(sclp_info_sccb_valid);
-char *sclp_early_sccb = (char *) EARLY_SCCB_OFFSET;
+char *__bootdata(sclp_early_sccb);
int sclp_init_state = sclp_init_state_uninitialized;
/*
* Used to keep track of the size of the event masks. Qemu until version 2.11
return rc;
}
+void sclp_early_set_buffer(void *sccb)
+{
+ sclp_early_sccb = sccb;
+}
+
/*
* Output one or more lines of text on the SCLP console (VT220 and /
* or line-mode).