talos-skiboot/libc/include, branch 04-16-2019

libc: add strnlen()

2017-09-15T07:49:27+00:00

Sometimes handy. Signed-off-by: Oliver O'Halloran Signed-off-by: Stewart Smith

libc: Add labs() to stdlib

2017-05-31T06:58:05+00:00

Signed-off-by: Shilpasri G Bhat Acked-by: Balbir Singh Signed-off-by: Stewart Smith

stdio: Fix default definition of pr_fmt

2017-01-05T04:27:43+00:00

And change include order in libpore to avoid a compile failure due to the default definition Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Stewart Smith

libc/string: add memcpy_from_ci()

2016-10-05T03:42:26+00:00

This adds memcpy_from_ci, a cache inhibited version of memcpy, required by secure boot. The secure boot verification code is stored in a secure ROM and the logic that contains the ROM within the processor is implemented in a way that it only responds to CI (cache inhibited) operations. Due to performance issues we copy the verification code from the secure ROM to RAM and we use memcpy_ci for that. What makes memcpy_ci vs ordinary memcpy? memcpy copies data like in the example below and the compiler translates that to load instructions that are not cache inhibited (e.g. lbzx - load byte and zero indexed). In other words, the data is cached. a[i] = b[i] memcpy_ci copies data using the cache inhibited version of load instructions: in_8() and in_be32(), both defined in include/io.h. These functions use lbzcix and lwzcix assembly instructions, respectively. In this case, the data is not cached as required by the logic that contains the ROM. *((uint8_t*) destp) = in_8((uint8_t*)srcp); *((uint32_t*) destp) = in_be32((uint32_t*)srcp) Signed-off-by: Claudio Carvalho Signed-off-by: Stewart Smith

Add "ffs" inline function

2016-07-06T09:30:48+00:00

Signed-off-by: Benjamin Herrenschmidt Acked-by: Michael Neuling Signed-off-by: Stewart Smith

Move FSP specific abort() code to platform layer

2015-09-09T05:43:50+00:00

Presently abort() call sets up HID0, triggers attention and finally calls infinite for loop. FSP takes care of collecting required logs and reboots the system. This sequence is specific to FSP machine and it will not work on BMC based machine. Hence move FSP specific code to hw/fsp/fsp-attn.c. Note that this patch adds new parameter to abort call. Hence replaced _abort() by abort() in exception.c so that we can capture file info as well. Signed-off-by: Vasant Hegde Signed-off-by: Stewart Smith

libflash/blocklevel: Extend the block level to be able to do ecc

2015-06-23T03:38:42+00:00

At the moment ECC reads and writes are still being handled by the low level core of libflash. ECC should be none of libflashes concern, it is primarily a hardware access backend. It makes sense for blocklevel to take care of ECC but currently it has no way of knowing. With some simple modifications (which are rudimentary at the moment and will need a performance improvement) blocklevel can handle ECC, and with a little more effort this can be extended to provide read and write protection in blocklevel. Reviewed-By: Alistair Popple Signed-off-by: Cyril Bur Signed-off-by: Stewart Smith

Remove unused struct tm elements

2015-06-15T01:39:36+00:00

Better to error out than suddenly have places use uninitalized data. Signed-off-by: Stewart Smith

Add pr_fmt to do printf/prlog prefixing automagically

2015-05-12T02:09:13+00:00

Signed-off-by: Stewart Smith

sparse: fix libc declarations

2015-02-26T07:33:07+00:00

Signed-off-by: Cédric Le Goater Signed-off-by: Stewart Smith