Hello Ahmad,
thanks for the fast review. I'll make the suggested changes and post a
V2 (most likely) tomorrow.
Best regards
Christian
On 13/07/2020 15:36, Ahmad Fatoum wrote:
> Hello Christian,
>
> On 7/13/20 2:03 PM, Christian Mauderer wrote:
>> According to the U-Boot documentation for the FIT file format, the load
>> and entry have to be allways defined for a "kernel" or "standalone".
>> But Barebox ignored the parameters. That changes with this patch.
>>
>> For backward compatibility the default address is still used for images
>> without `load` or `entry`.
>> ---
>> arch/arm/mach-layerscape/ppa.c | 3 +-
>> common/bootm.c | 7 ++--
>> common/image-fit.c | 61 +++++++++++++++++++++++++++++++++-
>> include/image-fit.h | 3 +-
>> 4 files changed, 68 insertions(+), 6 deletions(-)
>>
>> diff --git a/arch/arm/mach-layerscape/ppa.c b/arch/arm/mach-layerscape/ppa.c
>> index 477e89478..3eb7ab641 100644
>> --- a/arch/arm/mach-layerscape/ppa.c
>> +++ b/arch/arm/mach-layerscape/ppa.c
>> @@ -82,7 +82,8 @@ static int ppa_init(void *ppa, size_t ppa_size, void
>> *sec_firmware_addr)
>> }
>>
>>
>> - ret = fit_open_image(fit, conf, "firmware", &buf, &firmware_size);
>> + ret = fit_open_image(fit, conf, "firmware", &buf, &firmware_size,
>> + NULL, NULL);
>> if (ret) {
>> pr_err("Cannot open firmware image in ppa FIT image: %s\n",
>> strerror(-ret));
>> diff --git a/common/bootm.c b/common/bootm.c
>> index 366f31455..94600cae3 100644
>> --- a/common/bootm.c
>> +++ b/common/bootm.c
>> @@ -222,7 +222,7 @@ int bootm_load_initrd(struct image_data *data, unsigned
>> long load_address)
>> unsigned long initrd_size;
>>
>> ret = fit_open_image(data->os_fit, data->fit_config, "ramdisk",
>> - &initrd, &initrd_size);
>> + &initrd, &initrd_size, NULL, NULL);
>>
>> data->initrd_res = request_sdram_region("initrd",
>> load_address,
>> @@ -348,7 +348,7 @@ void *bootm_get_devicetree(struct image_data *data)
>> unsigned long of_size;
>>
>> ret = fit_open_image(data->os_fit, data->fit_config, "fdt",
>> - &of_tree, &of_size);
>> + &of_tree, &of_size, NULL, NULL);
>> if (ret)
>> return ERR_PTR(ret);
>>
>> @@ -622,7 +622,8 @@ int bootm_boot(struct bootm_data *bootm_data)
>> }
>>
>> ret = fit_open_image(data->os_fit, data->fit_config, "kernel",
>> - &data->fit_kernel, &data->fit_kernel_size);
>> + &data->fit_kernel, &data->fit_kernel_size,
>> + &data->os_address, &data->os_entry);
>> if (ret)
>> goto err_out;
>> }
>> diff --git a/common/image-fit.c b/common/image-fit.c
>> index 2681d62a9..40ee6d0d8 100644
>> --- a/common/image-fit.c
>> +++ b/common/image-fit.c
>> @@ -517,12 +517,43 @@ int fit_has_image(struct fit_handle *handle, void
>> *configuration,
>> return 1;
>> }
>>
>> +static int fit_get_address(struct device_node *image, const char *property,
>> + unsigned long *addr)
>> +{
>> + int ret = 0;
>> + uint64_t value64;
>> + uint32_t value32;
>> +
>> + if (sizeof(*addr) == sizeof(value64)) {
>> + ret = of_property_read_u64(image, property, &value64);
>> + if (ret == 0) {
>> + *addr = value64;
>> + } else if (ret == -EOVERFLOW) {
>> + ret = of_property_read_u32(image, property, &value32);
>> + if (ret == 0) {
>> + *addr = value32;
>> + }
>> + }
>> + } else if (sizeof(*addr) == sizeof(value32)) {
>> + ret = of_property_read_u32(image, property, &value32);
>> + if (ret == 0) {
>> + *addr = value32;
>> + }
>> + } else {
>> + ret = -ENOTSUPP;
>> + }
>> +
>> + return ret;
>
> You can make this more concise by calling of_read_number yourself:
>
> const __be32 *cell;
> int len = 0;
>
> cell = of_get_property(image, property, &len);
> if (!cell)
> return -EINVAL;
> if (len > sizeof(unsigned long))
> return -ENOTSUPP;
>
> *addr = (unsigned long)of_read_number(cell, len / sizeof(*cell));
> return 0;
>
>> +}
>> +
>> /**
>> * fit_open_image - Open an image in a FIT image
>> * @handle: The FIT image handle
>> * @name: The name of the image to open
>> * @outdata: The returned image
>> * @outsize: Size of the returned image
>> + * @load: The load address given by the image
>> + * @entry: The entry address given by the image
>> *
>> * Open an image in a FIT image. The returned image is freed during
>> fit_close().
>> * @configuration holds the cookie returned from fit_open_configuration() if
>> @@ -532,11 +563,16 @@ int fit_has_image(struct fit_handle *handle, void
>> *configuration,
>> * then only the hash is checked (because opening the configuration already
>> * checks the RSA signature of all involved nodes).
>> *
>> + * The load address and entry point of the image description in the FIT
>> will be
>> + * parsed if they exist and if the @load and @entry parameters are not NULL.
>> + * Otherwise @load and @entry won't be changed.
>> + *
>> * Return: 0 for success, negative error code otherwise
>> */
>> int fit_open_image(struct fit_handle *handle, void *configuration,
>> const char *name, const void **outdata,
>> - unsigned long *outsize)
>> + unsigned long *outsize, unsigned long *load,
>> + unsigned long *entry)
>> {
>> struct device_node *image;
>> const char *unit, *type = NULL, *desc= "(no description)";
>> @@ -573,6 +609,29 @@ int fit_open_image(struct fit_handle *handle, void
>> *configuration,
>> return -EINVAL;
>> }
>>
>> + if (load) {
>> + ret = fit_get_address(image, "load", load);
>> + if (ret < 0) {
>> + pr_info("Couldn't get load address in %s. Use
>> default.\n", image->full_name);
>> + ret = 0;
>> + } else {
>> + pr_info("load: 0x%08lx\n", *load);
>
> Fold this pr_info and the next into the already existing one?
> That way, we don't print 3 separate lines every time.
>
>> + }
>> + }
>> +
>> + if (load && entry) {
>> + ret = fit_get_address(image, "entry", entry);
>> + if (ret < 0) {
>> + pr_info("Couldn't get entry point in %s. Use
>> default.\n", image->full_name);
>> + ret = 0;
>> + } else {
>> + /* Barebox uses an entry relative to load but the FIT
>> + * images assume an absolute entry. */
>> + *entry -= *load;
>> + pr_info("entry: 0x%08lx\n", *entry);
>> + }
>> + }
>> +
>> if (conf_node)
>> ret = fit_verify_hash(handle, image, data, data_len);
>> else
>> diff --git a/include/image-fit.h b/include/image-fit.h
>> index 27c9e8351..038732d0d 100644
>> --- a/include/image-fit.h
>> +++ b/include/image-fit.h
>> @@ -31,7 +31,8 @@ int fit_has_image(struct fit_handle *handle, void
>> *configuration,
>> const char *name);
>> int fit_open_image(struct fit_handle *handle, void *configuration,
>> const char *name, const void **outdata,
>> - unsigned long *outsize);
>> + unsigned long *outsize, unsigned long *load,
>> + unsigned long *entry);
>>
>> void fit_close(struct fit_handle *handle);
>>
>>
>
--
--------------------------------------------
embedded brains GmbH
Herr Christian Mauderer
Dornierstr. 4
D-82178 Puchheim
Germany
email: [email protected]
Phone: +49-89-18 94 741 - 18
Fax: +49-89-18 94 741 - 08
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