New patch to review for coreboot: fsp1_1: fsp_relocate: use struct region_device and struct prog

[Aaron Durbin]

Aaron Durbin ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/11193

-gerrit

commit f8407a9806f1821bd032542123e5b0bd9c792035
Author: Aaron Durbin 
Date:   Wed Aug 5 10:17:33 2015 -0500

fsp1_1: fsp_relocate: use struct region_device and struct prog

Using struct prog and struct region_device allows for the
    caller to be none-the-wiser about where FSP gets placed. It
    also allows for the source location to be abstracted away
    such that it doesn't require a large mapping up front to
    do the relocation. Lastly, it allows for simplifying the
    intel/commmon FSP support in that it can pass around a
    struct prog.

BUG=chrome-os-partner:43636
    BRANCH=None
    TEST=Built, booted, suspended, and resumed on glados.

Original-Change-Id: I034b04ab2b7e9e01f5ee14fcc190f04b90517d30
    Original-Signed-off-by: Aaron Durbin 
    Original-Reviewed-on: https://chromium-review.googlesource.com/290830
    Original-Tested-by: Aaron Durbin 
    Original-Reviewed-by: Leroy P Leahy 
    Original-Reviewed-by: Duncan Laurie 
    Original-Commit-Queue: Aaron Durbin

Change-Id: Ibe1f206a9541902103551afaf212418fcc90e73c
    Signed-off-by: Aaron Durbin 
---
 src/drivers/intel/fsp1_1/fsp_relocate.c | 28 +++++++++++++++++++++++-----
 src/drivers/intel/fsp1_1/fsp_util.h     |  9 ++++++---
 src/soc/intel/common/fsp_ramstage.c     | 20 +++++++++++---------
 3 files changed, 40 insertions(+), 17 deletions(-)

diff --git a/src/drivers/intel/fsp1_1/fsp_relocate.c b/src/drivers/intel/fsp1_1/fsp_relocate.c
index 08e1eb8..3e52608 100644
--- a/src/drivers/intel/fsp1_1/fsp_relocate.c
+++ b/src/drivers/intel/fsp1_1/fsp_relocate.c
@@ -482,15 +482,33 @@ static FSP_INFO_HEADER *fsp_relocate_in_place(void *fsp, size_t size)
    return relocate_remaining_items(fsp, size, fih_offset);
 }

-FSP_INFO_HEADER *fsp_relocate(void *fsp_src, size_t size)
+int fsp_relocate(struct prog *fsp_relocd, const struct region_device *fsp_src)
 {
    void *new_loc;
+	void *fih;
+	size_t size = region_device_sz(fsp_src);

new_loc = cbmem_add(CBMEM_ID_REFCODE, size);
+
    if (new_loc == NULL) {
-		printk(BIOS_ERR, "Unable to load FSP into memory.\n");
-		return NULL;
+		printk(BIOS_ERR, "ERROR: Unable to load FSP into memory.\n");
+		return -1;
    }
-	memcpy(new_loc, fsp_src, size);
-	return fsp_relocate_in_place(new_loc, size);
+
+	if (rdev_readat(fsp_src, new_loc, 0, size) != size) {
+		printk(BIOS_ERR, "ERROR: Can't read FSP's region device.\n");
+		return -1;
+	}
+
+	fih = fsp_relocate_in_place(new_loc, size);
+
+	if (fih == NULL) {
+		printk(BIOS_ERR, "ERROR: FSP relocation faiulre.\n");
+		return -1;
+	}
+
+	prog_set_area(fsp_relocd, new_loc, size);
+	prog_set_entry(fsp_relocd, fih, NULL);
+
+	return 0;
 }
diff --git a/src/drivers/intel/fsp1_1/fsp_util.h b/src/drivers/intel/fsp1_1/fsp_util.h
index 618317b..fba9116 100644
--- a/src/drivers/intel/fsp1_1/fsp_util.h
+++ b/src/drivers/intel/fsp1_1/fsp_util.h
@@ -24,6 +24,8 @@
 #include <types.h>
 #include <arch/cpu.h>
 #include <fsp_gop.h>
+#include <program_loading.h>
+#include <region.h>

/*
  * The following are functions with prototypes defined in the EDK2 headers. The
@@ -63,10 +65,11 @@ void *get_next_type_guid_hob(UINT16 type, const EFI_GUID *guid,
 void *get_next_resource_hob(const EFI_GUID *guid, const void *hob_start);
 void *get_first_resource_hob(const EFI_GUID *guid);
 /*
- * Relocate FSP entire binary into ram. Returns NULL on error. Otherwise the
- * FSP_INFO_HEADER pointer to the relocated FSP.
+ * Relocate FSP entire binary into ram. Returns < 0 on error, 0 on success.
+ * The FSP source is pointed to by region_device and the relocation information
+ * is encoded in a struct prog with its entry point set to the FSP info header.
  */
-FSP_INFO_HEADER *fsp_relocate(void *fsp_src, size_t size);
+int fsp_relocate(struct prog *fsp_relocd, const struct region_device *fsp_src);

/* Additional HOB types not included in the FSP:
  * #define EFI_HOB_TYPE_HANDOFF 0x0001
diff --git a/src/soc/intel/common/fsp_ramstage.c b/src/soc/intel/common/fsp_ramstage.c
index 5ccc4ee..1c3c38a 100644
--- a/src/soc/intel/common/fsp_ramstage.c
+++ b/src/soc/intel/common/fsp_ramstage.c
@@ -286,20 +286,22 @@ static void fsp_cache_save(void)

static int fsp_find_and_relocate(void)
 {
-	void *fih;
-	void *data;
-	size_t length;
+	struct prog fsp_prog = PROG_INIT(ASSET_REFCODE, "fsp.bin");
+	struct region_device fsp_rdev;
+	uint32_t type = CBFS_TYPE_FSP;

-	data = cbfs_boot_map_with_leak("fsp.bin", CBFS_TYPE_FSP, &length);
-
-	if (data == NULL) {
-		printk(BIOS_ERR, "Couldn't find fsp.bin in CBFS.\n");
+	if (cbfs_boot_locate(&fsp_rdev, prog_name(&fsp_prog), &type)) {
+		printk(BIOS_ERR, "ERROR: Couldn't find fsp.bin in CBFS.\n");
    	return -1;
    }

-	fih = fsp_relocate(data, length);
+	if (fsp_relocate(&fsp_prog, &fsp_rdev)) {
+		printk(BIOS_ERR, "ERROR: FSP relocation failed.\n");
+		return -1;
+	}

-	fsp_update_fih(fih);
+	/* FSP_INFO_HEADER is set as the program entry. */
+	fsp_update_fih(prog_entry(&fsp_prog));

return 0;
 }