7a61a006de
JEP106 encodes JEDEC-assigned manufacture code as: a) a sequence of zero or more escape codes 0x7f; b) an odd-parity bit of the next 7 bits; c) 7 bits. The same code is often represented as a single value composed by the logical OR between: - the number of escape codes in a), shifted left by 7 positions; - the 7 bits in c). This is the preferred packed representation used by this change. Currently there are only two uses of JEP106 in openocd to get the manufacturer name: - to decode the JTAG IDCODE of each TAP, where the JEP106 code is already packed as in the preferred representation above in bits IDCODE[11:1]; - to decode the ARM CoreSight PIDR register, where the JEP106 code is split in 3 parts: = PIDR3[3:0], corresponding to bits [10:7] of the packed code; = PIDR2[2:0], corresponding to bits [6:4] of the packed code; = PIDR1[7:4], corresponding to bits [3:0] of the packed code. Wrap the existing JEP106 decode function in a simpler API using the packed code. Simplify the callers by skipping the bit unpacking. Change the manufacturer code in CoreSight table dap_partnums[] to match the packed representation, by removing the always-one bit 7 erroneously taken from PIDR bit JEDEC and included in the former table. Change-Id: I63eb4da9e6801fab25e330f1f6b792d2fd619493 Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com> Reviewed-on: https://review.openocd.org/c/openocd/+/6418 Tested-by: jenkins |
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flash | ||
helper | ||
jtag | ||
pld | ||
rtos | ||
rtt | ||
server | ||
svf | ||
target | ||
transport | ||
xsvf | ||
hello.c | ||
hello.h | ||
main.c | ||
Makefile.am | ||
openocd.c | ||
openocd.h |