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SubjectRe: [PATCH v7 2/4] remoteproc: qcom: refactor mss fw image loading sequence
On Fri 21 Jul 03:49 PDT 2017, Avaneesh Kumar Dwivedi wrote:

> This patch refactor code to first load all firmware blobs
> and then update modem proc to authenticate and boot fw.
>

Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>

Regards,
Bjorn

> Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@codeaurora.org>
> ---
> drivers/remoteproc/qcom_q6v5_pil.c | 19 ++++++++-----------
> 1 file changed, 8 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/remoteproc/qcom_q6v5_pil.c b/drivers/remoteproc/qcom_q6v5_pil.c
> index 8fd697a..f5f8850 100644
> --- a/drivers/remoteproc/qcom_q6v5_pil.c
> +++ b/drivers/remoteproc/qcom_q6v5_pil.c
> @@ -503,7 +503,7 @@ static int q6v5_mpss_load(struct q6v5 *qproc)
> bool relocate = false;
> char seg_name[10];
> ssize_t offset;
> - size_t size;
> + size_t size = 0;
> void *ptr;
> int ret;
> int i;
> @@ -541,7 +541,7 @@ static int q6v5_mpss_load(struct q6v5 *qproc)
> }
>
> mpss_reloc = relocate ? min_addr : qproc->mpss_phys;
> -
> + /* Load firmware segments */
> for (i = 0; i < ehdr->e_phnum; i++) {
> phdr = &phdrs[i];
>
> @@ -574,18 +574,15 @@ static int q6v5_mpss_load(struct q6v5 *qproc)
> memset(ptr + phdr->p_filesz, 0,
> phdr->p_memsz - phdr->p_filesz);
> }
> -
> - size = readl(qproc->rmb_base + RMB_PMI_CODE_LENGTH_REG);
> - if (!size) {
> - boot_addr = relocate ? qproc->mpss_phys : min_addr;
> - writel(boot_addr, qproc->rmb_base + RMB_PMI_CODE_START_REG);
> - writel(RMB_CMD_LOAD_READY, qproc->rmb_base + RMB_MBA_COMMAND_REG);
> - }
> -
> size += phdr->p_memsz;
> - writel(size, qproc->rmb_base + RMB_PMI_CODE_LENGTH_REG);
> }
>
> + /* Transfer ownership of modem ddr region with q6*/
> + boot_addr = relocate ? qproc->mpss_phys : min_addr;
> + writel(boot_addr, qproc->rmb_base + RMB_PMI_CODE_START_REG);
> + writel(RMB_CMD_LOAD_READY, qproc->rmb_base + RMB_MBA_COMMAND_REG);
> + writel(size, qproc->rmb_base + RMB_PMI_CODE_LENGTH_REG);
> +
> ret = q6v5_rmb_mba_wait(qproc, RMB_MBA_AUTH_COMPLETE, 10000);
> if (ret == -ETIMEDOUT)
> dev_err(qproc->dev, "MPSS authentication timed out\n");
> --
> Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project.
>

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