1 files changed, 33 insertions, 21 deletions

diff --git a/arch/s390/boot/ipl_parm.c b/arch/s390/boot/ipl_parm.c
index 36beb56de021..3c49bde8aa5e 100644
--- a/arch/s390/boot/ipl_parm.c
+++ b/arch/s390/boot/ipl_parm.c
@@ -7,16 +7,19 @@
 #include <asm/sections.h>
 #include <asm/boot_data.h>
 #include <asm/facility.h>
+#include <asm/uv.h>
 #include "boot.h"
 
 char __bootdata(early_command_line)[COMMAND_LINE_SIZE];
-struct ipl_parameter_block __bootdata(early_ipl_block);
-int __bootdata(early_ipl_block_valid);
+struct ipl_parameter_block __bootdata_preserved(ipl_block);
+int __bootdata_preserved(ipl_block_valid);
 
 unsigned long __bootdata(memory_end);
 int __bootdata(memory_end_set);
 int __bootdata(noexec_disabled);
 
+int kaslr_enabled __section(.data);
+
 static inline int __diag308(unsigned long subcode, void *addr)
 {
 	register unsigned long _addr asm("0") = (unsigned long)addr;
@@ -45,13 +48,15 @@ void store_ipl_parmblock(void)
 {
 	int rc;
 
-	rc = __diag308(DIAG308_STORE, &early_ipl_block);
+	uv_set_shared(__pa(&ipl_block));
+	rc = __diag308(DIAG308_STORE, &ipl_block);
+	uv_remove_shared(__pa(&ipl_block));
 	if (rc == DIAG308_RC_OK &&
-	    early_ipl_block.hdr.version <= IPL_MAX_SUPPORTED_VERSION)
-		early_ipl_block_valid = 1;
+	    ipl_block.hdr.version <= IPL_MAX_SUPPORTED_VERSION)
+		ipl_block_valid = 1;
 }
 
-static size_t scpdata_length(const char *buf, size_t count)
+static size_t scpdata_length(const u8 *buf, size_t count)
 {
 	while (count) {
 		if (buf[count - 1] != '\0' && buf[count - 1] != ' ')
@@ -68,26 +73,26 @@ static size_t ipl_block_get_ascii_scpdata(char *dest, size_t size,
 	size_t i;
 	int has_lowercase;
 
-	count = min(size - 1, scpdata_length(ipb->ipl_info.fcp.scp_data,
-					     ipb->ipl_info.fcp.scp_data_len));
+	count = min(size - 1, scpdata_length(ipb->fcp.scp_data,
+					     ipb->fcp.scp_data_len));
 	if (!count)
 		goto out;
 
 	has_lowercase = 0;
 	for (i = 0; i < count; i++) {
-		if (!isascii(ipb->ipl_info.fcp.scp_data[i])) {
+		if (!isascii(ipb->fcp.scp_data[i])) {
 			count = 0;
 			goto out;
 		}
-		if (!has_lowercase && islower(ipb->ipl_info.fcp.scp_data[i]))
+		if (!has_lowercase && islower(ipb->fcp.scp_data[i]))
 			has_lowercase = 1;
 	}
 
 	if (has_lowercase)
-		memcpy(dest, ipb->ipl_info.fcp.scp_data, count);
+		memcpy(dest, ipb->fcp.scp_data, count);
 	else
 		for (i = 0; i < count; i++)
-			dest[i] = tolower(ipb->ipl_info.fcp.scp_data[i]);
+			dest[i] = tolower(ipb->fcp.scp_data[i]);
 out:
 	dest[count] = '\0';
 	return count;
@@ -103,14 +108,14 @@ static void append_ipl_block_parm(void)
 	delim = early_command_line + len;    /* '\0' character position */
 	parm = early_command_line + len + 1; /* append right after '\0' */
 
-	switch (early_ipl_block.hdr.pbt) {
-	case DIAG308_IPL_TYPE_CCW:
+	switch (ipl_block.pb0_hdr.pbt) {
+	case IPL_PBT_CCW:
 		rc = ipl_block_get_ascii_vmparm(
-			parm, COMMAND_LINE_SIZE - len - 1, &early_ipl_block);
+			parm, COMMAND_LINE_SIZE - len - 1, &ipl_block);
 		break;
-	case DIAG308_IPL_TYPE_FCP:
+	case IPL_PBT_FCP:
 		rc = ipl_block_get_ascii_scpdata(
-			parm, COMMAND_LINE_SIZE - len - 1, &early_ipl_block);
+			parm, COMMAND_LINE_SIZE - len - 1, &ipl_block);
 		break;
 	}
 	if (rc) {
@@ -141,7 +146,7 @@ void setup_boot_command_line(void)
 	strcpy(early_command_line, strim(COMMAND_LINE));
 
 	/* append IPL PARM data to the boot command line */
-	if (early_ipl_block_valid)
+	if (!is_prot_virt_guest() && ipl_block_valid)
 		append_ipl_block_parm();
 }
 
@@ -211,6 +216,7 @@ void parse_boot_command_line(void)
 	char *args;
 	int rc;
 
+	kaslr_enabled = IS_ENABLED(CONFIG_RANDOMIZE_BASE);
 	args = strcpy(command_line_buf, early_command_line);
 	while (*args) {
 		args = next_arg(args, &param, &val);
@@ -228,15 +234,21 @@ void parse_boot_command_line(void)
 
 		if (!strcmp(param, "facilities"))
 			modify_fac_list(val);
+
+		if (!strcmp(param, "nokaslr"))
+			kaslr_enabled = 0;
 	}
 }
 
 void setup_memory_end(void)
 {
 #ifdef CONFIG_CRASH_DUMP
-	if (!OLDMEM_BASE && early_ipl_block_valid &&
-	    early_ipl_block.hdr.pbt == DIAG308_IPL_TYPE_FCP &&
-	    early_ipl_block.ipl_info.fcp.opt == DIAG308_IPL_OPT_DUMP) {
+	if (OLDMEM_BASE) {
+		kaslr_enabled = 0;
+	} else if (ipl_block_valid &&
+		   ipl_block.pb0_hdr.pbt == IPL_PBT_FCP &&
+		   ipl_block.fcp.opt == IPL_PB0_FCP_OPT_DUMP) {
+		kaslr_enabled = 0;
 		if (!sclp_early_get_hsa_size(&memory_end) && memory_end)
 			memory_end_set = 1;
 	}