2016-09-27 22:41 GMT-07:00 Mike Looijmans mike.looijmans@topic.nl:
The Zynq/ZynqMP boot.bin file contains a region for register initialization data. Filling in proper values in this table can reduce boot time (e.g. about 50ms faster on QSPI boot) and also reduce the size of the SPL binary.
The table is a simple text file with register+data on each line. Other lines are simply skipped. The file can be passed to mkimage using the "-R" parameter.
It is recommended to add reg init file to board folder. For example: CONFIG_BOOT_INIT_FILE="board/xilinx/zynqmp/xilinx_zynqmp_zcu102/reg.int
Signed-off-by: Mike Looijmans mike.looijmans@topic.nl Signed-off-by: Michal Simek michal.simek@xilinx.com
v2: Add ${srctree} to initialisation path to fix out-of-tree builds
arch/arm/cpu/armv8/zynqmp/Kconfig | 7 +++++++ arch/arm/mach-zynq/Kconfig | 7 +++++++ scripts/Makefile.spl | 4 ++-- tools/zynqimage.c | 28 ++++++++++++++++++++++++++++ tools/zynqmpimage.c | 28 ++++++++++++++++++++++++++++ 5 files changed, 72 insertions(+), 2 deletions(-)
diff --git a/arch/arm/cpu/armv8/zynqmp/Kconfig b/arch/arm/cpu/armv8/zynqmp/Kconfig index 1eedb39..a3baae4 100644 --- a/arch/arm/cpu/armv8/zynqmp/Kconfig +++ b/arch/arm/cpu/armv8/zynqmp/Kconfig @@ -41,6 +41,13 @@ config SYS_CONFIG_NAME Based on this option include/configs/<CONFIG_SYS_CONFIG_NAME>.h header will be used for board configuration.
+config BOOT_INIT_FILE
string "boot.bin init register filename"default ""helpAdd register writes to boot.bin format (max 256 pairs).Expect a table of register-value pairs, e.g. "0x12345678 0x4321"config ZYNQMP_USB bool "Configure ZynqMP USB"
diff --git a/arch/arm/mach-zynq/Kconfig b/arch/arm/mach-zynq/Kconfig index a1175ee..44e16af 100644 --- a/arch/arm/mach-zynq/Kconfig +++ b/arch/arm/mach-zynq/Kconfig @@ -44,4 +44,11 @@ config SYS_CONFIG_NAME config SYS_MALLOC_F_LEN default 0x600
+config BOOT_INIT_FILE
string "boot.bin init register filename"default ""helpAdd register writes to boot.bin format (max 256 pairs).Expect a table of register-value pairs, e.g. "0x12345678 0x4321"endif diff --git a/scripts/Makefile.spl b/scripts/Makefile.spl index 5a7f79c..18436b9 100644 --- a/scripts/Makefile.spl +++ b/scripts/Makefile.spl @@ -142,10 +142,10 @@ boot.bin: $(obj)/u-boot-spl.bin FORCE $(call if_changed,mkimage) else ifdef CONFIG_ARCH_ZYNQ -MKIMAGEFLAGS_boot.bin = -T zynqimage +MKIMAGEFLAGS_boot.bin = -T zynqimage -R $(srctree)/$(CONFIG_BOOT_INIT_ FILE) endif ifdef CONFIG_ARCH_ZYNQMP -MKIMAGEFLAGS_boot.bin = -T zynqmpimage +MKIMAGEFLAGS_boot.bin = -T zynqmpimage -R $(srctree)/$(CONFIG_BOOT_INIT_ FILE) endif
spl/boot.bin: $(obj)/u-boot-spl.bin FORCE diff --git a/tools/zynqimage.c b/tools/zynqimage.c index c43bd5d..43876e7 100644 --- a/tools/zynqimage.c +++ b/tools/zynqimage.c @@ -222,6 +222,30 @@ static int zynqimage_check_image_types(uint8_t type) return EXIT_FAILURE; }
+static void zynqimage_parse_initparams(struct zynq_header *zynqhdr,
const char *filename)+{
/* Expect a table of register-value pairs, e.g. "0x123456780x4321" */
FILE *fp = fopen(filename, "r");struct zynq_reginit reginit;unsigned int reg_count = 0;int r;if (!fp) {fprintf(stderr, "Cannot open initparams file: %s\n",filename);
exit(1);}do {r = fscanf(fp, "%x %x", ®init.address, ®init.data);if (r == 2) {zynqhdr->register_init[reg_count] = reginit;++reg_count;}r = fscanf(fp, "%*[^\n]\n"); /* Skip to next line */} while ((r != EOF) && (reg_count < HEADER_REGINITS));fclose(fp);+}
static void zynqimage_set_header(void *ptr, struct stat *sbuf, int ifd, struct image_tool_params *params) { @@ -237,6 +261,10 @@ static void zynqimage_set_header(void *ptr, struct stat *sbuf, int ifd, if (params->eflag) zynqhdr->image_load = cpu_to_le32((uint32_t)params->ep);
/* User can pass in text file with init list */if (strlen(params->imagename2))zynqimage_parse_initparams(zynqhdr, params->imagename2);zynqhdr->checksum = zynqimage_checksum(zynqhdr);}
diff --git a/tools/zynqmpimage.c b/tools/zynqmpimage.c index 3f28eb4..d08144c 100644 --- a/tools/zynqmpimage.c +++ b/tools/zynqmpimage.c @@ -234,6 +234,30 @@ static int zynqmpimage_check_image_types(uint8_t type) return EXIT_FAILURE; }
+static void zynqmpimage_parse_initparams(struct zynqmp_header *zynqhdr,
const char *filename)+{
/* Expect a table of register-value pairs, e.g. "0x123456780x4321" */
FILE *fp = fopen(filename, "r");struct zynqmp_reginit reginit;unsigned int reg_count = 0;int r;if (!fp) {fprintf(stderr, "Cannot open initparams file: %s\n",filename);
exit(1);}do {r = fscanf(fp, "%x %x", ®init.address, ®init.data);if (r == 2) {zynqhdr->register_init[reg_count] = reginit;++reg_count;}r = fscanf(fp, "%*[^\n]\n"); /* Skip to next line */} while ((r != EOF) && (reg_count < HEADER_REGINITS));fclose(fp);+}
static void zynqmpimage_set_header(void *ptr, struct stat *sbuf, int ifd, struct image_tool_params *params) { @@ -250,6 +274,10 @@ static void zynqmpimage_set_header(void *ptr, struct stat *sbuf, int ifd, if (params->eflag) zynqhdr->image_load = cpu_to_le32((uint32_t)params->ep);
/* User can pass in text file with init list */if (strlen(params->imagename2))zynqmpimage_parse_initparams(zynqhdr, params->imagename2);zynqhdr->checksum = zynqmpimage_checksum(zynqhdr);}
-- 1.9.1
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Applied.
Thanks, Michal