GCOV_PROFILE := n
UBSAN_SANITIZE := n
-OBJECTS := $(addprefix $(objtree)/arch/s390/kernel/, head.o sclp.o ebcdic.o als.o)
+OBJECTS := $(addprefix $(objtree)/arch/s390/kernel/, head.o ebcdic.o als.o)
+OBJECTS += $(objtree)/drivers/s390/char/sclp_early_core.o
OBJECTS += $(obj)/head.o $(obj)/misc.o $(obj)/piggy.o
LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup -T
# Do not trace early setup code
CFLAGS_REMOVE_als.o = $(CC_FLAGS_FTRACE)
CFLAGS_REMOVE_early.o = $(CC_FLAGS_FTRACE)
-CFLAGS_REMOVE_sclp.o = $(CC_FLAGS_FTRACE)
endif
GCOV_PROFILE_als.o := n
GCOV_PROFILE_early.o := n
-GCOV_PROFILE_sclp.o := n
KCOV_INSTRUMENT_als.o := n
KCOV_INSTRUMENT_early.o := n
-KCOV_INSTRUMENT_sclp.o := n
UBSAN_SANITIZE_als.o := n
UBSAN_SANITIZE_early.o := n
-UBSAN_SANITIZE_sclp.o := n
#
-# Use -march=z900 for sclp.c and als.c to be able to print an error
+# Use -march=z900 for als.c to be able to print an error
# message if the kernel is started on a machine which is too old
#
ifneq ($(CC_FLAGS_MARCH),-march=z900)
CFLAGS_REMOVE_als.o += $(CC_FLAGS_MARCH)
CFLAGS_als.o += -march=z900
-CFLAGS_REMOVE_sclp.o += $(CC_FLAGS_MARCH)
-CFLAGS_sclp.o += -march=z900
AFLAGS_REMOVE_head.o += $(CC_FLAGS_MARCH)
AFLAGS_head.o += -march=z900
endif
obj-y := traps.o time.o process.o base.o early.o setup.o idle.o vtime.o
obj-y += processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o
-obj-y += debug.o irq.o ipl.o dis.o diag.o sclp.o vdso.o als.o
+obj-y += debug.o irq.o ipl.o dis.o diag.o vdso.o als.o
obj-y += sysinfo.o jump_label.o lgr.o os_info.o machine_kexec.o pgm_check.o
obj-y += runtime_instr.o cache.o fpu.o dumpstack.o
obj-y += entry.o reipl.o relocate_kernel.o
+++ /dev/null
-/*
- * Copyright IBM Corp. 2015
- * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
- */
-#include <linux/kernel.h>
-#include <asm/ebcdic.h>
-#include <asm/irq.h>
-#include <asm/lowcore.h>
-#include <asm/processor.h>
-#include <asm/sclp.h>
-
-#define EVTYP_VT220MSG_MASK 0x00000040
-#define EVTYP_MSG_MASK 0x40000000
-
-static char _sclp_work_area[4096] __aligned(PAGE_SIZE) __section(data);
-static bool have_vt220 __section(data);
-static bool have_linemode __section(data);
-
-static void _sclp_wait_int(void)
-{
- unsigned long psw_mask, addr, flags;
- psw_t psw_ext_save, psw_wait;
- union ctlreg0 cr0, cr0_new;
-
- raw_local_irq_save(flags);
- __ctl_store(cr0.val, 0, 0);
- cr0_new.val = cr0.val & ~CR0_IRQ_SUBCLASS_MASK;
- cr0_new.lap = 0;
- cr0_new.sssm = 1;
- __ctl_load(cr0_new.val, 0, 0);
-
- psw_ext_save = S390_lowcore.external_new_psw;
- psw_mask = __extract_psw();
- S390_lowcore.external_new_psw.mask = psw_mask;
- psw_wait.mask = psw_mask | PSW_MASK_EXT | PSW_MASK_WAIT;
- S390_lowcore.ext_int_code = 0;
-
- do {
- asm volatile(
- " larl %[addr],0f\n"
- " stg %[addr],%[psw_wait_addr]\n"
- " stg %[addr],%[psw_ext_addr]\n"
- " lpswe %[psw_wait]\n"
- "0:\n"
- : [addr] "=&d" (addr),
- [psw_wait_addr] "=Q" (psw_wait.addr),
- [psw_ext_addr] "=Q" (S390_lowcore.external_new_psw.addr)
- : [psw_wait] "Q" (psw_wait)
- : "cc", "memory");
- } while (S390_lowcore.ext_int_code != EXT_IRQ_SERVICE_SIG);
-
- S390_lowcore.external_new_psw = psw_ext_save;
- __ctl_load(cr0.val, 0, 0);
- raw_local_irq_restore(flags);
-}
-
-static int _sclp_servc(unsigned int cmd, char *sccb)
-{
- unsigned int cc;
-
- do {
- asm volatile(
- " .insn rre,0xb2200000,%1,%2\n"
- " ipm %0\n"
- : "=d" (cc) : "d" (cmd), "a" (sccb)
- : "cc", "memory");
- cc >>= 28;
- if (cc == 3)
- return -EINVAL;
- _sclp_wait_int();
- } while (cc != 0);
- return (*(unsigned short *)(sccb + 6) == 0x20) ? 0 : -EIO;
-}
-
-static int _sclp_setup(int disable)
-{
- static unsigned char init_sccb[] = {
- 0x00, 0x1c,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x04,
- 0x80, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x40,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
- };
- unsigned int *masks;
- int rc;
-
- memcpy(_sclp_work_area, init_sccb, 28);
- masks = (unsigned int *)(_sclp_work_area + 12);
- if (disable)
- memset(masks, 0, 16);
- /* SCLP write mask */
- rc = _sclp_servc(0x00780005, _sclp_work_area);
- if (rc)
- return rc;
- have_vt220 = masks[2] & EVTYP_VT220MSG_MASK;
- have_linemode = masks[2] & EVTYP_MSG_MASK;
- return 0;
-}
-
-/* Output multi-line text using SCLP Message interface. */
-static void _sclp_print_lm(const char *str, unsigned int len)
-{
- static unsigned char write_head[] = {
- /* sccb header */
- 0x00, 0x52, /* 0 */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 2 */
- /* evbuf */
- 0x00, 0x4a, /* 8 */
- 0x02, 0x00, 0x00, 0x00, /* 10 */
- /* mdb */
- 0x00, 0x44, /* 14 */
- 0x00, 0x01, /* 16 */
- 0xd4, 0xc4, 0xc2, 0x40, /* 18 */
- 0x00, 0x00, 0x00, 0x01, /* 22 */
- /* go */
- 0x00, 0x38, /* 26 */
- 0x00, 0x01, /* 28 */
- 0x00, 0x00, 0x00, 0x00, /* 30 */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 34 */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 42 */
- 0x00, 0x00, 0x00, 0x00, /* 50 */
- 0x00, 0x00, /* 54 */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 56 */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 64 */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 72 */
- 0x00, 0x00, /* 80 */
- };
- static unsigned char write_mto[] = {
- /* mto */
- 0x00, 0x0a, /* 0 */
- 0x00, 0x04, /* 2 */
- 0x10, 0x00, /* 4 */
- 0x00, 0x00, 0x00, 0x00 /* 6 */
- };
- unsigned char *ptr, *end_ptr, ch;
- unsigned int count, num;
-
- num = 0;
- memcpy(_sclp_work_area, write_head, sizeof(write_head));
- ptr = _sclp_work_area + sizeof(write_head);
- end_ptr = _sclp_work_area + sizeof(_sclp_work_area) - 1;
- do {
- if (ptr + sizeof(write_mto) > end_ptr)
- break;
- memcpy(ptr, write_mto, sizeof(write_mto));
- for (count = sizeof(write_mto); num < len; count++) {
- num++;
- ch = *str++;
- if (ch == 0x0a)
- break;
- if (ptr > end_ptr)
- break;
- ptr[count] = _ascebc[ch];
- }
- /* Update length fields in mto, mdb, evbuf and sccb */
- *(unsigned short *) ptr = count;
- *(unsigned short *)(_sclp_work_area + 14) += count;
- *(unsigned short *)(_sclp_work_area + 8) += count;
- *(unsigned short *)(_sclp_work_area + 0) += count;
- ptr += count;
- } while (num < len);
-
- /* SCLP write data */
- _sclp_servc(0x00760005, _sclp_work_area);
-}
-
-/* Output multi-line text (plus a newline) using SCLP VT220
- * interface.
- */
-static void _sclp_print_vt220(const char *str, unsigned int len)
-{
- static unsigned char const write_head[] = {
- /* sccb header */
- 0x00, 0x0e,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- /* evbuf header */
- 0x00, 0x06,
- 0x1a, 0x00, 0x00, 0x00,
- };
-
- if (sizeof(write_head) + len >= sizeof(_sclp_work_area))
- len = sizeof(_sclp_work_area) - sizeof(write_head) - 1;
-
- memcpy(_sclp_work_area, write_head, sizeof(write_head));
- memcpy(_sclp_work_area + sizeof(write_head), str, len);
- _sclp_work_area[sizeof(write_head) + len] = '\n';
-
- /* Update length fields in evbuf and sccb headers */
- *(unsigned short *)(_sclp_work_area + 8) += len + 1;
- *(unsigned short *)(_sclp_work_area + 0) += len + 1;
-
- /* SCLP write data */
- (void)_sclp_servc(0x00760005, _sclp_work_area);
-}
-
-/* Output one or more lines of text on the SCLP console (VT220 and /
- * or line-mode). All lines get terminated; no need for a trailing LF.
- */
-void __sclp_print_early(const char *str, unsigned int len)
-{
- if (_sclp_setup(0) != 0)
- return;
- if (have_linemode)
- _sclp_print_lm(str, len);
- if (have_vt220)
- _sclp_print_vt220(str, len);
- _sclp_setup(1);
-}
-
-void _sclp_print_early(const char *str)
-{
- __sclp_print_early(str, strlen(str));
-}
# S/390 character devices
#
+ifdef CONFIG_FUNCTION_TRACER
+# Do not trace early setup code
+CFLAGS_REMOVE_sclp_early_core.o = $(CC_FLAGS_FTRACE)
+endif
+
+GCOV_PROFILE_sclp_early_core.o := n
+KCOV_INSTRUMENT_sclp_early_core.o := n
+UBSAN_SANITIZE_sclp_early_core.o := n
+
+ifneq ($(CC_FLAGS_MARCH),-march=z900)
+CFLAGS_REMOVE_sclp_early_core.o += $(CC_FLAGS_MARCH)
+CFLAGS_sclp_early_core.o += -march=z900
+endif
+
obj-y += ctrlchar.o keyboard.o defkeymap.o sclp.o sclp_rw.o sclp_quiesce.o \
sclp_cmd.o sclp_config.o sclp_cpi_sys.o sclp_ocf.o sclp_ctl.o \
- sclp_early.o
+ sclp_early.o sclp_early_core.o
obj-$(CONFIG_TN3270) += raw3270.o
obj-$(CONFIG_TN3270_CONSOLE) += con3270.o
--- /dev/null
+/*
+ * Copyright IBM Corp. 2015
+ * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
+ */
+#include <linux/kernel.h>
+#include <asm/ebcdic.h>
+#include <asm/irq.h>
+#include <asm/lowcore.h>
+#include <asm/processor.h>
+#include <asm/sclp.h>
+
+#define EVTYP_VT220MSG_MASK 0x00000040
+#define EVTYP_MSG_MASK 0x40000000
+
+static char _sclp_work_area[4096] __aligned(PAGE_SIZE) __section(data);
+static bool have_vt220 __section(data);
+static bool have_linemode __section(data);
+
+static void _sclp_wait_int(void)
+{
+ unsigned long psw_mask, addr, flags;
+ psw_t psw_ext_save, psw_wait;
+ union ctlreg0 cr0, cr0_new;
+
+ raw_local_irq_save(flags);
+ __ctl_store(cr0.val, 0, 0);
+ cr0_new.val = cr0.val & ~CR0_IRQ_SUBCLASS_MASK;
+ cr0_new.lap = 0;
+ cr0_new.sssm = 1;
+ __ctl_load(cr0_new.val, 0, 0);
+
+ psw_ext_save = S390_lowcore.external_new_psw;
+ psw_mask = __extract_psw();
+ S390_lowcore.external_new_psw.mask = psw_mask;
+ psw_wait.mask = psw_mask | PSW_MASK_EXT | PSW_MASK_WAIT;
+ S390_lowcore.ext_int_code = 0;
+
+ do {
+ asm volatile(
+ " larl %[addr],0f\n"
+ " stg %[addr],%[psw_wait_addr]\n"
+ " stg %[addr],%[psw_ext_addr]\n"
+ " lpswe %[psw_wait]\n"
+ "0:\n"
+ : [addr] "=&d" (addr),
+ [psw_wait_addr] "=Q" (psw_wait.addr),
+ [psw_ext_addr] "=Q" (S390_lowcore.external_new_psw.addr)
+ : [psw_wait] "Q" (psw_wait)
+ : "cc", "memory");
+ } while (S390_lowcore.ext_int_code != EXT_IRQ_SERVICE_SIG);
+
+ S390_lowcore.external_new_psw = psw_ext_save;
+ __ctl_load(cr0.val, 0, 0);
+ raw_local_irq_restore(flags);
+}
+
+static int _sclp_servc(unsigned int cmd, char *sccb)
+{
+ unsigned int cc;
+
+ do {
+ asm volatile(
+ " .insn rre,0xb2200000,%1,%2\n"
+ " ipm %0\n"
+ : "=d" (cc) : "d" (cmd), "a" (sccb)
+ : "cc", "memory");
+ cc >>= 28;
+ if (cc == 3)
+ return -EINVAL;
+ _sclp_wait_int();
+ } while (cc != 0);
+ return (*(unsigned short *)(sccb + 6) == 0x20) ? 0 : -EIO;
+}
+
+static int _sclp_setup(int disable)
+{
+ static unsigned char init_sccb[] = {
+ 0x00, 0x1c,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x04,
+ 0x80, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x40,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+ };
+ unsigned int *masks;
+ int rc;
+
+ memcpy(_sclp_work_area, init_sccb, 28);
+ masks = (unsigned int *)(_sclp_work_area + 12);
+ if (disable)
+ memset(masks, 0, 16);
+ /* SCLP write mask */
+ rc = _sclp_servc(0x00780005, _sclp_work_area);
+ if (rc)
+ return rc;
+ have_vt220 = masks[2] & EVTYP_VT220MSG_MASK;
+ have_linemode = masks[2] & EVTYP_MSG_MASK;
+ return 0;
+}
+
+/* Output multi-line text using SCLP Message interface. */
+static void _sclp_print_lm(const char *str, unsigned int len)
+{
+ static unsigned char write_head[] = {
+ /* sccb header */
+ 0x00, 0x52, /* 0 */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 2 */
+ /* evbuf */
+ 0x00, 0x4a, /* 8 */
+ 0x02, 0x00, 0x00, 0x00, /* 10 */
+ /* mdb */
+ 0x00, 0x44, /* 14 */
+ 0x00, 0x01, /* 16 */
+ 0xd4, 0xc4, 0xc2, 0x40, /* 18 */
+ 0x00, 0x00, 0x00, 0x01, /* 22 */
+ /* go */
+ 0x00, 0x38, /* 26 */
+ 0x00, 0x01, /* 28 */
+ 0x00, 0x00, 0x00, 0x00, /* 30 */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 34 */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 42 */
+ 0x00, 0x00, 0x00, 0x00, /* 50 */
+ 0x00, 0x00, /* 54 */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 56 */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 64 */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 72 */
+ 0x00, 0x00, /* 80 */
+ };
+ static unsigned char write_mto[] = {
+ /* mto */
+ 0x00, 0x0a, /* 0 */
+ 0x00, 0x04, /* 2 */
+ 0x10, 0x00, /* 4 */
+ 0x00, 0x00, 0x00, 0x00 /* 6 */
+ };
+ unsigned char *ptr, *end_ptr, ch;
+ unsigned int count, num;
+
+ num = 0;
+ memcpy(_sclp_work_area, write_head, sizeof(write_head));
+ ptr = _sclp_work_area + sizeof(write_head);
+ end_ptr = _sclp_work_area + sizeof(_sclp_work_area) - 1;
+ do {
+ if (ptr + sizeof(write_mto) > end_ptr)
+ break;
+ memcpy(ptr, write_mto, sizeof(write_mto));
+ for (count = sizeof(write_mto); num < len; count++) {
+ num++;
+ ch = *str++;
+ if (ch == 0x0a)
+ break;
+ if (ptr > end_ptr)
+ break;
+ ptr[count] = _ascebc[ch];
+ }
+ /* Update length fields in mto, mdb, evbuf and sccb */
+ *(unsigned short *) ptr = count;
+ *(unsigned short *)(_sclp_work_area + 14) += count;
+ *(unsigned short *)(_sclp_work_area + 8) += count;
+ *(unsigned short *)(_sclp_work_area + 0) += count;
+ ptr += count;
+ } while (num < len);
+
+ /* SCLP write data */
+ _sclp_servc(0x00760005, _sclp_work_area);
+}
+
+/* Output multi-line text (plus a newline) using SCLP VT220
+ * interface.
+ */
+static void _sclp_print_vt220(const char *str, unsigned int len)
+{
+ static unsigned char const write_head[] = {
+ /* sccb header */
+ 0x00, 0x0e,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ /* evbuf header */
+ 0x00, 0x06,
+ 0x1a, 0x00, 0x00, 0x00,
+ };
+
+ if (sizeof(write_head) + len >= sizeof(_sclp_work_area))
+ len = sizeof(_sclp_work_area) - sizeof(write_head) - 1;
+
+ memcpy(_sclp_work_area, write_head, sizeof(write_head));
+ memcpy(_sclp_work_area + sizeof(write_head), str, len);
+ _sclp_work_area[sizeof(write_head) + len] = '\n';
+
+ /* Update length fields in evbuf and sccb headers */
+ *(unsigned short *)(_sclp_work_area + 8) += len + 1;
+ *(unsigned short *)(_sclp_work_area + 0) += len + 1;
+
+ /* SCLP write data */
+ (void)_sclp_servc(0x00760005, _sclp_work_area);
+}
+
+/* Output one or more lines of text on the SCLP console (VT220 and /
+ * or line-mode). All lines get terminated; no need for a trailing LF.
+ */
+void __sclp_print_early(const char *str, unsigned int len)
+{
+ if (_sclp_setup(0) != 0)
+ return;
+ if (have_linemode)
+ _sclp_print_lm(str, len);
+ if (have_vt220)
+ _sclp_print_vt220(str, len);
+ _sclp_setup(1);
+}
+
+void _sclp_print_early(const char *str)
+{
+ __sclp_print_early(str, strlen(str));
+}
projects / linux-2.6-block.git / commitdiff