1 files changed, 83 insertions, 0 deletions
diff --git a/src/northbridge/amd/agesa/oem_s3.c b/src/northbridge/amd/agesa/oem_s3.c
new file mode 100644
index 0000000..c196be2
--- /dev/null
+++ b/src/northbridge/amd/agesa/oem_s3.c
@@ -0,0 +1,83 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Advanced Micro Devices, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc.
+ */
+
+#include <spi-generic.h>
+#include <spi_flash.h>
+#include <string.h>
+#include <cpu/amd/agesa/s3_resume.h>
+
+/* The size needs to be 4k aligned, which is the sector size of most flashes. */
+#define S3_DATA_VOLATILE_SIZE		0x6000
+#define S3_DATA_MTRR_SIZE			0x1000
+#define S3_DATA_NONVOLATILE_SIZE	0x1000
+
+#if IS_ENABLED(CONFIG_HAVE_ACPI_RESUME) && \
+	(S3_DATA_VOLATILE_SIZE + S3_DATA_MTRR_SIZE + S3_DATA_NONVOLATILE_SIZE) > CONFIG_S3_DATA_SIZE
+#error "Please increase the value of S3_DATA_SIZE"
+#endif
+
+void get_s3nv_data(S3_DATA_TYPE S3DataType, u32 *pos, u32 *len)
+{
+	/* FIXME: Find file from CBFS. */
+	u32 s3_data = CONFIG_S3_DATA_POS;
+
+	switch (S3DataType) {
+	case S3DataTypeVolatile:
+		*pos = s3_data;
+		*len = S3_DATA_VOLATILE_SIZE;
+		break;
+	case S3DataTypeMTRR:
+		*pos = s3_data + S3_DATA_VOLATILE_SIZE;
+		*len = S3_DATA_MTRR_SIZE;
+		break;
+	case S3DataTypeNonVolatile:
+		*pos = s3_data + S3_DATA_VOLATILE_SIZE + S3_DATA_MTRR_SIZE;
+		*len = S3_DATA_NONVOLATILE_SIZE;
+		break;
+	default:
+		*pos = 0;
+		*len = 0;
+		break;
+	}
+}
+
+int spi_SaveS3info(u32 pos, u32 size, u8 *buf, u32 len)
+{
+#if IS_ENABLED(CONFIG_SPI_FLASH)
+	struct spi_flash *flash;
+
+	spi_init();
+	flash = spi_flash_probe(0, 0);
+	if (!flash)
+		return -1;
+
+	flash->spi->rw = SPI_WRITE_FLAG;
+	spi_claim_bus(flash->spi);
+
+	flash->erase(flash, pos, size);
+	flash->write(flash, pos, sizeof(len), &len);
+	flash->write(flash, pos + sizeof(len), len, buf);
+
+	flash->spi->rw = SPI_WRITE_FLAG;
+	spi_release_bus(flash->spi);
+	return 0;
+#else
+	return -1;
+#endif
+}