From 55d99488f8cd1ba926316cecb8ba1c502529822a Mon Sep 17 00:00:00 2001 From: Vasant Hegde Date: Thu, 31 Jul 2014 00:21:33 +0530 Subject: MDST: Add OPAL interface to unregister dump region Add OPAL interface to remove host memory region from SYSDUMP. Signed-off-by: Vasant Hegde Signed-off-by: Benjamin Herrenschmidt --- hw/fsp/fsp-mdst-table.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) (limited to 'hw') diff --git a/hw/fsp/fsp-mdst-table.c b/hw/fsp/fsp-mdst-table.c index f0808f9a..5629cc12 100644 --- a/hw/fsp/fsp-mdst-table.c +++ b/hw/fsp/fsp-mdst-table.c @@ -310,6 +310,36 @@ static int64_t fsp_opal_register_dump_region(uint32_t id, return rc; } +static int64_t fsp_opal_unregister_dump_region(uint32_t id) +{ + int rc = OPAL_SUCCESS; + + if (!fsp_present()) + return rc; + + if (!fsp_mdst_supported()) { + printf("MDST: Not supported\n"); + return rc; + } + + /* Validate memory region id */ + if (id < DUMP_REGION_HOST_START || id > DUMP_REGION_HOST_END) { + prerror("MDST: Invalid dump region id : 0x%x\n", id); + return OPAL_PARAMETER; + } + + rc = dump_region_del_entry(id); + if (rc) { + prerror("MDST: dump region id : 0x%x not found\n", id); + return OPAL_PARAMETER; + } + + /* Send updated MDST to FSP */ + rc = fsp_update_mdst_table(); + + return rc; +} + /* TCE mapping */ static inline void mdst_table_tce_map(void) { @@ -374,6 +404,8 @@ void fsp_mdst_table_init(void) /* OPAL interface */ opal_register(OPAL_REGISTER_DUMP_REGION, fsp_opal_register_dump_region, 3); + opal_register(OPAL_UNREGISTER_DUMP_REGION, + fsp_opal_unregister_dump_region, 1); if (!fsp_mdst_supported()) return; -- cgit v1.2.1