hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

PPC64: Add support for instantiating SML from Open Firmware 

This patch instantiate Stored Measurement Log (SML) and put the
log address and size in the device tree.

Signed-off-by: Ashley Lai <adlai@us.ibm.com>
Signed-off-by: Kent Yoder <key@linux.vnet.ibm.com>
This commit is contained in:
Ashley Lai 2012-08-14 18:34:57 -05:00 committed by Kent Yoder
parent 132f762947
commit 4a727429ab
1 changed files with 62 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
arch/powerpc/kernel/prom_init.c
View File

@ -1623,6 +1623,63 @@ static void __init prom_instantiate_rtas(void)
}
#ifdef CONFIG_PPC64
/*
* Allocate room for and instantiate Stored Measurement Log (SML)
*/
static void __init prom_instantiate_sml(void)
{
phandle ibmvtpm_node;
ihandle ibmvtpm_inst;
u32 entry = 0, size = 0;
u64 base;
prom_debug("prom_instantiate_sml: start...\n");
ibmvtpm_node = call_prom("finddevice", 1, 1, ADDR("/ibm,vtpm"));
prom_debug("ibmvtpm_node: %x\n", ibmvtpm_node);
if (!PHANDLE_VALID(ibmvtpm_node))
return;
ibmvtpm_inst = call_prom("open", 1, 1, ADDR("/ibm,vtpm"));
if (!IHANDLE_VALID(ibmvtpm_inst)) {
prom_printf("opening vtpm package failed (%x)\n", ibmvtpm_inst);
return;
}
if (call_prom_ret("call-method", 2, 2, &size,
ADDR("sml-get-handover-size"),
ibmvtpm_inst) != 0 || size == 0) {
prom_printf("SML get handover size failed\n");
return;
}
base = alloc_down(size, PAGE_SIZE, 0);
if (base == 0)
prom_panic("Could not allocate memory for sml\n");
prom_printf("instantiating sml at 0x%x...", base);
if (call_prom_ret("call-method", 4, 2, &entry,
ADDR("sml-handover"),
ibmvtpm_inst, size, base) != 0 || entry == 0) {
prom_printf("SML handover failed\n");
return;
}
prom_printf(" done\n");
reserve_mem(base, size);
prom_setprop(ibmvtpm_node, "/ibm,vtpm", "linux,sml-base",
&base, sizeof(base));
prom_setprop(ibmvtpm_node, "/ibm,vtpm", "linux,sml-size",
&size, sizeof(size));
prom_debug("sml base = 0x%x\n", base);
prom_debug("sml size = 0x%x\n", (long)size);
prom_debug("prom_instantiate_sml: end...\n");
}
/*
* Allocate room for and initialize TCE tables
*/
@ -2916,6 +2973,11 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4,
prom_instantiate_opal();
#endif
#ifdef CONFIG_PPC64
/* instantiate sml */
prom_instantiate_sml();
#endif
/*
* On non-powermacs, put all CPUs in spin-loops.
*