[PATCH u-boot-mvebu v2 17/41] tools: kwbimage: Add support for DATA command also for v1 images

["Marek Behún" <marek.behun@nic.cz>]

From: Pali Rohár <pali@kernel.org>

The DATA command is already supported by mkimage for v0 images, but not
for v1 images.

BootROM code which executes v1 images also supports DATA command via an
optional extended v1 header OPT_HDR_V1_REGISTER_TYPE.

Implement support for DATA command for v1 images.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Chris Packham <judge.packham@gmail.com>
Tested-by: Chris Packham <judge.packham@gmail.com>
---
 tools/kwbimage.c | 32 +++++++++++++++++++++++++++++++-
 tools/kwbimage.h | 27 +++++++++++++++++++++++++++
 2 files changed, 58 insertions(+), 1 deletion(-)

diff --git a/tools/kwbimage.c b/tools/kwbimage.c
index 74a77412d7..b585f49180 100644
--- a/tools/kwbimage.c
+++ b/tools/kwbimage.c
@@ -933,6 +933,7 @@ static void *image_create_v0(size_t *imagesz, struct image_tool_params *params,
 static size_t image_headersz_v1(int *hasext)
 {
 	struct image_cfg_element *binarye;
+	unsigned int count;
 	size_t headersz;
 	int cfgi;
 
@@ -942,6 +943,10 @@ static size_t image_headersz_v1(int *hasext)
 	 */
 	headersz = sizeof(struct main_hdr_v1);
 
+	count = image_count_options(IMAGE_CFG_DATA);
+	if (count > 0)
+		headersz += sizeof(struct register_set_hdr_v1) + 8 * count + 4;
+
 	for (cfgi = 0; cfgi < cfgn; cfgi++) {
 		int ret;
 		struct stat s;
@@ -1188,6 +1193,7 @@ static void *image_create_v1(size_t *imagesz, struct image_tool_params *params,
 {
 	struct image_cfg_element *e;
 	struct main_hdr_v1 *main_hdr;
+	struct register_set_hdr_v1 *register_set_hdr;
 #if defined(CONFIG_KWB_SECURE)
 	struct secure_hdr_v1 *secure_hdr = NULL;
 #endif
@@ -1195,7 +1201,7 @@ static void *image_create_v1(size_t *imagesz, struct image_tool_params *params,
 	uint8_t *image, *cur;
 	int hasext = 0;
 	uint8_t *next_ext = NULL;
-	int cfgi;
+	int cfgi, datai, size;
 
 	/*
 	 * Calculate the size of the header and the size of the
@@ -1279,6 +1285,30 @@ static void *image_create_v1(size_t *imagesz, struct image_tool_params *params,
 	}
 #endif
 
+	datai = 0;
+	register_set_hdr = (struct register_set_hdr_v1 *)cur;
+	for (cfgi = 0; cfgi < cfgn; cfgi++) {
+		e = &image_cfg[cfgi];
+		if (e->type != IMAGE_CFG_DATA)
+			continue;
+		register_set_hdr->data[datai].entry.address =
+			cpu_to_le32(e->regdata.raddr);
+		register_set_hdr->data[datai].entry.value =
+			cpu_to_le32(e->regdata.rdata);
+		datai++;
+	}
+	if (datai != 0) {
+		size = sizeof(struct register_set_hdr_v1) + 8 * datai + 4;
+		register_set_hdr->headertype = OPT_HDR_V1_REGISTER_TYPE;
+		register_set_hdr->headersz_lsb = cpu_to_le16(size & 0xFFFF);
+		register_set_hdr->headersz_msb = size >> 16;
+		/* Set delay to the smallest possible value 1ms. */
+		register_set_hdr->data[datai].last_entry.delay = 1;
+		cur += size;
+		*next_ext = 1;
+		next_ext = &register_set_hdr->data[datai].last_entry.next;
+	}
+
 	for (cfgi = 0; cfgi < cfgn; cfgi++) {
 		e = &image_cfg[cfgi];
 		if (e->type != IMAGE_CFG_BINARY)
diff --git a/tools/kwbimage.h b/tools/kwbimage.h
index cab3d95d13..9f86da46e8 100644
--- a/tools/kwbimage.h
+++ b/tools/kwbimage.h
@@ -148,6 +148,33 @@ struct secure_hdr_v1 {
 	uint16_t reserved5;		/* 0x25E2 - 0x25E3 */
 };
 
+/*
+ * Structure of register set
+ */
+struct register_set_hdr_v1 {
+	uint8_t  headertype;		/* 0x0 */
+	uint8_t  headersz_msb;		/* 0x1 */
+	uint16_t headersz_lsb;		/* 0x2 - 0x3 */
+	union {
+		struct {
+			uint32_t address;	/* 0x4+8*N - 0x7+8*N */
+			uint32_t value;		/* 0x8+8*N - 0xB+8*N */
+		} entry;
+		struct {
+			uint8_t  next;		/* 0xC+8*N */
+			uint8_t  delay;		/* 0xD+8*N */
+			uint16_t reserved;	/* 0xE+8*N - 0xF+8*N */
+		} last_entry;
+	} data[];
+};
+
+/*
+ * Value 0 in register_set_hdr_v1 delay field is special.
+ * Instead of delay it setup SDRAM Controller.
+ */
+#define REGISTER_SET_HDR_OPT_DELAY_SDRAM_SETUP 0
+#define REGISTER_SET_HDR_OPT_DELAY_MS(val) ((val) ?: 1)
+
 /*
  * Various values for the opt_hdr_v1->headertype field, describing the
  * different types of optional headers. The "secure" header contains
-- 
2.31.1