Confirm if sys driver and sOS are already been loaded through sOS
sign register, skip loading sys driver and sOS if finding the sign.
Signed-off-by: Xiangliang Yu <xiangliang...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/psp_v3_1.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v3_1.c
b/drivers/gpu/drm/amd/amdgpu/psp_v3_1.c
index 49c3844..5191c45 100644
--- a/drivers/gpu/drm/amd/amdgpu/psp_v3_1.c
+++ b/drivers/gpu/drm/amd/amdgpu/psp_v3_1.c
@@ -170,7 +170,14 @@ int psp_v3_1_bootloader_load_sysdrv(struct psp_context
*psp)
void *psp_sysdrv_virt = NULL;
uint64_t psp_sysdrv_mem;
struct amdgpu_device *adev = psp->adev;
- uint32_t size;
+ uint32_t size, sol_reg;
+
+ /* Check sOS sign of life register to confirm sys driver and sOS
+ * are already been loaded.
+ */
+ sol_reg = RREG32(SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_81));
+ if (sol_reg)
+ return 0;
/* Wait for bootloader to signify that is ready having bit 31 of
C2PMSG_35 set to 1 */
ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_35),
@@ -222,7 +229,14 @@ int psp_v3_1_bootloader_load_sos(struct psp_context *psp)
void *psp_sos_virt = NULL;
uint64_t psp_sos_mem;
struct amdgpu_device *adev = psp->adev;
- uint32_t size;
+ uint32_t size, sol_reg;
+
+ /* Check sOS sign of life register to confirm sys driver and sOS
+ * are already been loaded.
+ */
+ sol_reg = RREG32(SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_81));
+ if (sol_reg)
+ return 0;
/* Wait for bootloader to signify that is ready having bit 31 of
C2PMSG_35 set to 1 */
ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_35),
--
2.7.4
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