[Skiboot] [PATCH v4 4/6] hdata: Enable SPIRA-H
Vasant Hegde
hegdevasant at linux.vnet.ibm.com
Tue Mar 22 16:48:56 AEDT 2016
Update the SPIRA-H pointer in the NACA so that the FSP can build and pass
the SPIRA-S structure to OPAL instead of the legacy SPIRA. Older systems
(which does not support SPIRA-H) ignores SPIRA-H pointer and continue to
pass legacy SPIRA.
"spira" is a global structure and referred everywhere inside hdata dir. Once
we enable SPIRA-H we get data in SPIRA-S area, not in legacy spira. Hence
fixup spira structure, so that we don't break building device tree.
Signed-off-by: Vasant Hegde <hegdevasant at linux.vnet.ibm.com>
---
asm/head.S | 2 +-
hdata/spira.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
hdata/spira.h | 2 ++
3 files changed, 51 insertions(+), 1 deletion(-)
diff --git a/asm/head.S b/asm/head.S
index 192de55..5335846 100644
--- a/asm/head.S
+++ b/asm/head.S
@@ -737,7 +737,7 @@ init_replicated_sprs:
. = 0x4000
.global naca
naca:
- .llong 0 /* 0x0000 : Reserved */
+ .llong spirah /* 0x0000 : SPIRA-H */
.llong 0 /* 0x0008 : Reserved */
.llong 0 /* 0x0010 : Reserved */
.llong hv_release_data /* 0x0018 : HV release data */
diff --git a/hdata/spira.c b/hdata/spira.c
index b8ef0b0..bff6d71 100644
--- a/hdata/spira.c
+++ b/hdata/spira.c
@@ -193,6 +193,9 @@ __section(".spirah.data") struct spirah spirah = {
},
};
+/* The service processor SPIRA-S structure */
+struct spiras *spiras;
+
/* Overridden for testing. */
#ifndef spira_check_ptr
bool spira_check_ptr(const void *ptr, const char *file, unsigned int line)
@@ -1039,12 +1042,57 @@ static void hostservices_parse(void)
hservices_from_hdat(dt_blob, size);
}
+/*
+ * Legacy SPIRA is being deprecated and we have new SPIRA-H/S structures.
+ * But on older system (p7?) we will continue to get legacy SPIRA.
+ *
+ * SPIRA-S is initialized and provided by FSP. We use SPIRA-S signature
+ * to identify supported format. Also if required adjust spira pointer.
+ */
+static void fixup_spira(void)
+{
+#if !defined(TEST)
+ spiras = (struct spiras *)CPU_TO_BE64(SPIRA_HEAP_BASE);
+#endif
+
+ /* Validate SPIRA-S signature */
+ if (!spiras)
+ return;
+ if (!HDIF_check(&spiras->hdr, SPIRAS_HDIF_SIG))
+ return;
+
+ prlog(PR_NOTICE, "SPIRA-S found.\n");
+
+ spira.ntuples.sp_subsys = spiras->ntuples.sp_subsys;
+ spira.ntuples.ipl_parms = spiras->ntuples.ipl_parms;
+ spira.ntuples.nt_enclosure_vpd = spiras->ntuples.nt_enclosure_vpd;
+ spira.ntuples.slca = spiras->ntuples.slca;
+ spira.ntuples.backplane_vpd = spiras->ntuples.backplane_vpd;
+ spira.ntuples.system_vpd = spiras->ntuples.system_vpd;
+ spira.ntuples.proc_init = spirah.ntuples.proc_init;
+ spira.ntuples.clock_vpd = spiras->ntuples.clock_vpd;
+ spira.ntuples.anchor_vpd = spiras->ntuples.anchor_vpd;
+ spira.ntuples.op_panel_vpd = spiras->ntuples.op_panel_vpd;
+ spira.ntuples.misc_cec_fru_vpd = spiras->ntuples.misc_cec_fru_vpd;
+ spira.ntuples.ms_vpd = spiras->ntuples.ms_vpd;
+ spira.ntuples.cec_iohub_fru = spiras->ntuples.cec_iohub_fru;
+ spira.ntuples.cpu_ctrl = spirah.ntuples.cpu_ctrl;
+ spira.ntuples.mdump_src = spirah.ntuples.mdump_src;
+ spira.ntuples.mdump_dst = spirah.ntuples.mdump_dst;
+ spira.ntuples.mdump_res = spirah.ntuples.mdump_res;
+ spira.ntuples.pcia = spiras->ntuples.pcia;
+ spira.ntuples.proc_chip = spiras->ntuples.proc_chip;
+ spira.ntuples.hs_data = spiras->ntuples.hs_data;
+}
+
void parse_hdat(bool is_opal, uint32_t master_cpu)
{
cpu_type = PVR_TYPE(mfspr(SPR_PVR));
prlog(PR_DEBUG, "Parsing HDAT...\n");
+ fixup_spira();
+
dt_root = dt_new_root("");
/*
diff --git a/hdata/spira.h b/hdata/spira.h
index ba3cef1..f283969 100644
--- a/hdata/spira.h
+++ b/hdata/spira.h
@@ -146,6 +146,8 @@ struct spiras {
u8 reserved[0x1c0];
} __packed __align(0x100);
+extern struct spiras *spiras;
+
/* This macro can be used to check the validity of a pointer returned
* by one of the HDIF API functions. It returns true if the pointer
--
2.5.0
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