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remoteproc fixes for v5.12

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This fixes an issue with firmware loading on the TI K3 PRU, fixes
 compatibility with GNU binutils for the same and resolves link error
 due to a 64-bit division in the Qualcomm PIL info.
 
 It also recognizes Mathieu Poirier as co-maintainer of the remoteproc
 and rpmsg subsystems.
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Merge tag 'rproc-v5.12-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc

Pull remoteproc fixes from Bjorn Andersson:
 "This fixes an issue with firmware loading on the TI K3 PRU, fixes
  compatibility with GNU binutils for the same and resolves link error
  due to a 64-bit division in the Qualcomm PIL info.

  It also recognizes Mathieu Poirier as co-maintainer of the remoteproc
  and rpmsg subsystems"

* tag 'rproc-v5.12-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc:
  remoteproc: pru: Fix firmware loading crashes on K3 SoCs
  remoteproc: pru: Fix loading of GNU Binutils ELF
  MAINTAINERS: Add co-maintainer for remoteproc/RPMSG subsystems
  remoteproc: qcom: pil_info: avoid 64-bit division
This commit is contained in:
Linus Torvalds 2021-04-09 10:05:25 -07:00
commit 3766fcf5d3
3 changed files with 22 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
MAINTAINERS
View file

@ -15199,6 +15199,7 @@ F: fs/reiserfs/
REMOTE PROCESSOR (REMOTEPROC) SUBSYSTEM
M: Ohad Ben-Cohen <ohad@wizery.com>
M: Bjorn Andersson <bjorn.andersson@linaro.org>
M: Mathieu Poirier <mathieu.poirier@linaro.org>
L: linux-remoteproc@vger.kernel.org
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc.git rproc-next
@ -15212,6 +15213,7 @@ F: include/linux/remoteproc/
REMOTE PROCESSOR MESSAGING (RPMSG) SUBSYSTEM
M: Ohad Ben-Cohen <ohad@wizery.com>
M: Bjorn Andersson <bjorn.andersson@linaro.org>
M: Mathieu Poirier <mathieu.poirier@linaro.org>
L: linux-remoteproc@vger.kernel.org
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc.git rpmsg-next

20
drivers/remoteproc/pru_rproc.c
View file

@ -450,6 +450,24 @@ static void *pru_i_da_to_va(struct pru_rproc *pru, u32 da, size_t len)
if (len == 0)
return NULL;
/*
* GNU binutils do not support multiple address spaces. The GNU
* linker's default linker script places IRAM at an arbitrary high
* offset, in order to differentiate it from DRAM. Hence we need to
* strip the artificial offset in the IRAM addresses coming from the
* ELF file.
*
* The TI proprietary linker would never set those higher IRAM address
* bits anyway. PRU architecture limits the program counter to 16-bit
* word-address range. This in turn corresponds to 18-bit IRAM
* byte-address range for ELF.
*
* Two more bits are added just in case to make the final 20-bit mask.
* Idea is to have a safeguard in case TI decides to add banking
* in future SoCs.
*/
da &= 0xfffff;
if (da >= PRU_IRAM_DA &&
da + len <= PRU_IRAM_DA + pru->mem_regions[PRU_IOMEM_IRAM].size) {
offset = da - PRU_IRAM_DA;
@ -585,7 +603,7 @@ pru_rproc_load_elf_segments(struct rproc *rproc, const struct firmware *fw)
break;
}
if (pru->data->is_k3 && is_iram) {
if (pru->data->is_k3) {
ret = pru_rproc_memcpy(ptr, elf_data + phdr->p_offset,
filesz);
if (ret) {

2
drivers/remoteproc/qcom_pil_info.c
View file

@ -56,7 +56,7 @@ static int qcom_pil_info_init(void)
memset_io(base, 0, resource_size(&imem));
_reloc.base = base;
_reloc.num_entries = resource_size(&imem) / PIL_RELOC_ENTRY_SIZE;
_reloc.num_entries = (u32)resource_size(&imem) / PIL_RELOC_ENTRY_SIZE;
return 0;
}