x86: fsp: Add FSP2 base support

Add support for some important configuration options and FSP memory init.
The memory init uses swizzle tables from the device tree.

Support for the FSP_S binary is also included.

Bootstage timing is used for both FSP_M and FSP_S and memory-mapped SPI
reads.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

1 files changed, 54 insertions, 0 deletions

diff --git a/arch/x86/lib/fsp2/fsp_silicon_init.c b/arch/x86/lib/fsp2/fsp_silicon_init.c
new file mode 100644
index 00000000000..d7ce43e1eb2
--- /dev/null
+++ b/arch/x86/lib/fsp2/fsp_silicon_init.c
@@ -0,0 +1,54 @@
+// SPDX-License-Identifier: Intel
+/*
+ * Copyright (C) 2015-2016 Intel Corp.
+ * (Written by Andrey Petrov <andrey.petrov@intel.com> for Intel Corp.)
+ *
+ * Mostly taken from coreboot fsp2_0/silicon_init.c
+ */
+
+#define LOG_CATEGORY UCLASS_NORTHBRIDGE
+
+#include <common.h>
+#include <binman.h>
+#include <dm.h>
+#include <asm/arch/fsp/fsp_configs.h>
+#include <asm/arch/fsp/fsp_s_upd.h>
+#include <asm/fsp/fsp_infoheader.h>
+#include <asm/fsp2/fsp_internal.h>
+
+int fsp_silicon_init(bool s3wake, bool use_spi_flash)
+{
+	struct fsps_upd upd, *fsp_upd;
+	fsp_silicon_init_func func;
+	struct fsp_header *hdr;
+	struct binman_entry entry;
+	struct udevice *dev;
+	ulong rom_offset = 0;
+	int ret;
+
+	ret = fsp_locate_fsp(FSP_S, &entry, use_spi_flash, &dev, &hdr,
+			     &rom_offset);
+	if (ret)
+		return log_msg_ret("locate FSP", ret);
+	gd->arch.fsp_s_hdr = hdr;
+
+	/* Copy over the default config */
+	fsp_upd = (struct fsps_upd *)(hdr->img_base + hdr->cfg_region_off);
+	if (fsp_upd->header.signature != FSPS_UPD_SIGNATURE)
+		return log_msg_ret("Bad UPD signature", -EPERM);
+	memcpy(&upd, fsp_upd, sizeof(upd));
+
+	ret = fsps_update_config(dev, rom_offset, &upd);
+	if (ret)
+		return log_msg_ret("Could not setup config", ret);
+	log_debug("Silicon init...");
+	bootstage_start(BOOTSTATE_ID_ACCUM_FSP_S, "fsp-s");
+	func = (fsp_silicon_init_func)(hdr->img_base + hdr->fsp_silicon_init);
+	ret = func(&upd);
+	bootstage_accum(BOOTSTATE_ID_ACCUM_FSP_S);
+	if (ret)
+		return log_msg_ret("Silicon init fail\n", ret);
+	log_debug("done\n");
+
+	return 0;
+}