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author | Aidan MacDonald <amachronic@protonmail.com> | 2024-03-30 15:02:22 +0000 |
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committer | Aidan MacDonald <amachronic@protonmail.com> | 2024-03-31 11:24:07 -0400 |
commit | b0a8cacd1dd11dbf6f8f7b46675d89e5b5b32920 (patch) | |
tree | 0284666ea01de50c01bbc1e43e8e7f8a96283131 /firmware/export/config/mpiohd200.h | |
parent | 7dc8d754a26c88f376d67e63b1da1adf5e770817 (diff) | |
download | rockbox-b0a8cacd1dd11dbf6f8f7b46675d89e5b5b32920.tar.gz rockbox-b0a8cacd1dd11dbf6f8f7b46675d89e5b5b32920.zip |
rolo: simplify parsing scramble header in load_firmware()
The standard load_firmware() function is used on targets which
use the "scramble -add" method for generating Rockbox binaries.
While it tries to be a bit more generic and allows the CRC/data
offsets to be placed anywhere in the file, there are no targets
which actually need this flexibility, because they are all using
plain old "scramble -add".
So we can actually simplify load_firmware() and remove defines
from the target headers. All the targets used CRC offset = 0 and
data offset = 8, except for a few which I assume never supported
ROLO or were never tested -- eg. samsungyh820: the CRC and data
offsets cannot both be 0.
The actual motivation for this is removing the calls to lseek(),
which can help make bootloaders a tiny bit smaller, as lseek is
typically not used anywhere else in bootloaders.
Change-Id: Ic2d01e5b75a32e88363f085e3e839146a0710bf4
Diffstat (limited to 'firmware/export/config/mpiohd200.h')
-rw-r--r-- | firmware/export/config/mpiohd200.h | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/firmware/export/config/mpiohd200.h b/firmware/export/config/mpiohd200.h index a770183946..bced50dfe7 100644 --- a/firmware/export/config/mpiohd200.h +++ b/firmware/export/config/mpiohd200.h | |||
@@ -152,15 +152,6 @@ | |||
152 | /* Define this if you have ATA power-off control */ | 152 | /* Define this if you have ATA power-off control */ |
153 | #define HAVE_ATA_POWER_OFF | 153 | #define HAVE_ATA_POWER_OFF |
154 | 154 | ||
155 | /* Offset ( in the firmware file's header ) to the file length */ | ||
156 | #define FIRMWARE_OFFSET_FILE_LENGTH 0 | ||
157 | |||
158 | /* Offset ( in the firmware file's header ) to the file CRC */ | ||
159 | #define FIRMWARE_OFFSET_FILE_CRC 0 | ||
160 | |||
161 | /* Offset ( in the firmware file's header ) to the real data */ | ||
162 | #define FIRMWARE_OFFSET_FILE_DATA 8 | ||
163 | |||
164 | /* Define this if you have adjustable CPU frequency */ | 155 | /* Define this if you have adjustable CPU frequency */ |
165 | #define HAVE_ADJUSTABLE_CPU_FREQ | 156 | #define HAVE_ADJUSTABLE_CPU_FREQ |
166 | 157 | ||