remoteproc: qcom: refactor mss fw image loading sequence

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

Tested-and-acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

diff --git a/drivers/remoteproc/qcom_q6v5_pil.c b/drivers/remoteproc/qcom_q6v5_pil.c
index 2d3d5ac..39b9ee4 100644 (file)
--- a/drivers/remoteproc/qcom_q6v5_pil.c
+++ b/drivers/remoteproc/qcom_q6v5_pil.c
@@ -504,7 +504,7 @@ 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;
@@ -542,7 +542,7 @@ 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];
 
@@ -575,18 +575,15 @@ 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");