diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-12 08:15:27 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-12 08:15:27 +0200 |
| commit | 14d34d2dbbe2d9144a65bae1549202d1717062e2 (patch) | |
| tree | 8d8a84be09fa898bdfdf14e7783cd6b42d6bb0ed /drivers/remoteproc/pru_rproc.c | |
| parent | 3db53374405fbf7a474086ed984189f65b6f0008 (diff) | |
| parent | d434405aaab7d0ebc516b68a8fc4100922d7f5ef (diff) | |
| download | linux-14d34d2dbbe2d9144a65bae1549202d1717062e2.tar.bz2 | |
Merge 5.12-rc7 into usb-next
We need the USB fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/remoteproc/pru_rproc.c')
| -rw-r--r-- | drivers/remoteproc/pru_rproc.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c index 2667919d76b3..dcb380e868df 100644 --- a/drivers/remoteproc/pru_rproc.c +++ b/drivers/remoteproc/pru_rproc.c @@ -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) { |