Re: [tegrarcm PATCH v2 2/4] Add support for update pubkey and rsa-pss signatures

[Stephen Warren]

On 10/02/2015 02:56 PM, Jimmy Zhang wrote:
Create new configuration keywords:
    RsaKeyModulusFile: pubkey modulus
    RsaPssSigBlFile:   bootloader rsa pss signature
    RsaPssSigBctFile:  bct rsa pss signature
Sample Configuration file update_bl_sig.cfg
    RsaKeyModulusFile = pubkey.mod;
    RsaPssSigBlFile = bl.sig;

where pubkey.mod and bl.sig are files that contain the public key
modulus and bootloader's rsa-pss signature respectively.

public key modulus and signature are created through utilities
outside cbootimage.

Command line example:
  $ cbootimage -s tegra210 -u update_bl_sig.cfg image.bin image.bin-bl-signed

Above three new keywords added in this CL are only implemented support
for T210.

diff --git a/src/set.c b/src/set.c

+set_rsa_param(build_image_context *context, parse_token token,
+               char *filename)

+       file_type rsa_filetype = file_type_bin;
+
+        /* Read the image into memory. */
+       result = read_from_image(filename,
+                               0,
+                               ARSE_RSA_PARAM_MAX_BYTES,
+                               &rsa_storage,
+                               &actual_size,
+                               rsa_filetype);

Why do we need a variable "ras_filetype"? Why not just pass 
file_type_bin directly as the function parameter?
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