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s390/ipl: provide uapi header for list directed IPL

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The IPL parameter block is used as an interface between Linux and
the machine to query and change the boot device and boot options.
To be able to create IPL parameter block in user space and pass it
as segment to kexec provide an uapi header with proper structure
definitions for the block.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2019-02-20 14:26:51 +01:00
parent 86c74d869d
commit 5f1207fbe7
5 changed files with 161 additions and 128 deletions
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10
arch/s390/boot/ipl_parm.c
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@@ -106,12 +106,12 @@ 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 (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, &ipl_block);
break;
case DIAG308_IPL_TYPE_FCP:
case IPL_PBT_FCP:
rc = ipl_block_get_ascii_scpdata(
parm, COMMAND_LINE_SIZE - len - 1, &ipl_block);
break;
@@ -238,8 +238,8 @@ void setup_memory_end(void)
{
#ifdef CONFIG_CRASH_DUMP
if (!OLDMEM_BASE && ipl_block_valid &&
ipl_block.hdr.pbt == DIAG308_IPL_TYPE_FCP &&
ipl_block.fcp.opt == DIAG308_IPL_OPT_DUMP) {
ipl_block.pb0_hdr.pbt == IPL_PBT_FCP &&
ipl_block.fcp.opt == IPL_PB0_FCP_OPT_DUMP) {
if (!sclp_early_get_hsa_size(&memory_end) && memory_end)
memory_end_set = 1;
}