Patrick Georgi (pgeorgi@google.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/13602
-gerrit
commit 9e00779908430bd58b7736bcb1cd62b2de06bb59 Author: Fang, Yang A yang.a.fang@intel.com Date: Thu Jan 28 16:52:33 2016 -0800
nhlt: add api to override oem_id and oem_table_id of acpi_header_t
This patch added nhlt_soc_serialize_oem_overrides and nhlt_serilalize_oem_overrides to be able to override oem_id and oem_table_id.board file can pass specific string by calling nhlt_soc_serialize_oem_overrides
kernel use these two fields to construct a topology binary name if the designate file is not found a default dfw_sst.bin will be used it is optional.
BUG=chrome-os-partner:49570 BRANCH=glados TEST=Build & Booted kunimitsu board. Verified that kernel can read new strings.
Change-Id: I00b64fb8bb63de601d3116e0b8941057c1efa230 Signed-off-by: Patrick Georgi pgeorgi@chromium.org Original-Commit-Id: 374ce08b2d8a2f4e5dd7f51eacb505dbb77fd171 Original-Change-Id: I03623c8ac81efb5a5ea3ec9c6cd604d2e9294022 Original-Signed-off-by: Fang, Yang A yang.a.fang@intel.com Original-Reviewed-on: https://chromium-review.googlesource.com/322860 Original-Commit-Ready: Yang Fang yang.a.fang@intel.com Original-Tested-by: Yang Fang yang.a.fang@intel.com Original-Reviewed-by: Aaron Durbin adurbin@chromium.org --- src/include/nhlt.h | 17 +++++++++++++++++ src/lib/nhlt.c | 22 ++++++++++++++++++++-- src/soc/intel/skylake/nhlt/nhlt.c | 9 ++++++++- 3 files changed, 45 insertions(+), 3 deletions(-)
diff --git a/src/include/nhlt.h b/src/include/nhlt.h index ca16693..f0b3b6f 100644 --- a/src/include/nhlt.h +++ b/src/include/nhlt.h @@ -125,12 +125,29 @@ void nhlt_next_instance(struct nhlt *nhlt, int link_type); uintptr_t nhlt_serialize(struct nhlt *nhlt, uintptr_t acpi_addr);
/* + * Serialize NHLT object to ACPI table. Take in the beginning address of where + * the table will reside oem_id and oem_table_id and return the address of the + * next ACPI table. On error 0 will be returned. The NHLT object is no longer + * valid after thisfunction is called. + */ +uintptr_t nhlt_serialize_oem_overrides(struct nhlt *nhlt, uintptr_t acpi_addr, + const char *oem_id, const char *oem_table_id); + +/* * While very similar to nhlt_serialize() the SoC specific function allows * the chipset to perform any needed accounting work such as updating ACPI * field references for the serialized structure. */ uintptr_t nhlt_soc_serialize(struct nhlt *nhlt, uintptr_t acpi_addr);
+/* + * While very similar to nhlt_serialize_oem_overrides() the SoC specific + * function allows the chipset to perform any needed accounting work such + * as updating ACPI field references for the serialized structure. + */ +uintptr_t nhlt_soc_serialize_oem_overrides(struct nhlt *nhlt, + uintptr_t acpi_addr, const char *oem_id, const char *oem_table_id); + /* Link and device types. */ enum { NHLT_LINK_HDA, diff --git a/src/lib/nhlt.c b/src/lib/nhlt.c index 4fa4a0c..11a397c 100644 --- a/src/lib/nhlt.c +++ b/src/lib/nhlt.c @@ -389,9 +389,17 @@ static void nhlt_serialize_endpoints(struct nhlt *nhlt, struct cursor *cur)
uintptr_t nhlt_serialize(struct nhlt *nhlt, uintptr_t acpi_addr) { + return nhlt_serialize_oem_overrides(nhlt, acpi_addr, NULL, NULL); +} + +uintptr_t nhlt_serialize_oem_overrides(struct nhlt *nhlt, + uintptr_t acpi_addr, const char *oem_id, const char *oem_table_id) +{ struct cursor cur; acpi_header_t *header; size_t sz; + size_t oem_id_len; + size_t oem_table_id_len;
printk(BIOS_DEBUG, "ACPI: * NHLT\n");
@@ -403,8 +411,18 @@ uintptr_t nhlt_serialize(struct nhlt *nhlt, uintptr_t acpi_addr) memcpy(header->signature, "NHLT", 4); write_le32(&header->length, sz); write_le8(&header->revision, 5); - memcpy(header->oem_id, OEM_ID, 6); - memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8); + + if (oem_id == NULL) + oem_id = OEM_ID; + + if (oem_table_id == NULL) + oem_table_id = ACPI_TABLE_CREATOR; + + oem_id_len = MIN(strlen(oem_id), 6); + oem_table_id_len = MIN(strlen(oem_table_id), 8); + + memcpy(header->oem_id, oem_id, oem_id_len); + memcpy(header->oem_table_id, oem_table_id, oem_table_id_len); memcpy(header->asl_compiler_id, ASLC, 4);
cur.buf = (void *)(acpi_addr + sizeof(acpi_header_t)); diff --git a/src/soc/intel/skylake/nhlt/nhlt.c b/src/soc/intel/skylake/nhlt/nhlt.c index 56e7d39..6ef906a 100644 --- a/src/soc/intel/skylake/nhlt/nhlt.c +++ b/src/soc/intel/skylake/nhlt/nhlt.c @@ -87,6 +87,12 @@ struct nhlt_endpoint *nhlt_soc_add_endpoint(struct nhlt *nhlt, int soc_hwintf,
uintptr_t nhlt_soc_serialize(struct nhlt *nhlt, uintptr_t acpi_addr) { + return nhlt_soc_serialize_oem_overrides(nhlt, acpi_addr, NULL, NULL); +} + +uintptr_t nhlt_soc_serialize_oem_overrides(struct nhlt *nhlt, + uintptr_t acpi_addr, const char *oem_id, const char *oem_table_id) +{ global_nvs_t *gnvs;
gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS); @@ -98,5 +104,6 @@ uintptr_t nhlt_soc_serialize(struct nhlt *nhlt, uintptr_t acpi_addr) gnvs->nhla = (uintptr_t)acpi_addr; gnvs->nhll = nhlt_current_size(nhlt);
- return nhlt_serialize(nhlt, acpi_addr); + return nhlt_serialize_oem_overrides(nhlt, acpi_addr, + oem_id, oem_table_id); }