| From 4c249de0915750b328e456c34f18546f92850afd Mon Sep 17 00:00:00 2001 |
| From: Vishnu Banavath <vishnu.banavath@arm.com> |
| Date: Fri, 10 Dec 2021 20:03:35 +0000 |
| Subject: [PATCH 15/24] efi_capsule: corstone1000: pass interface id and buffer |
| event id using register w4 |
| |
| Initially the interface/event IDs are passed to the SP using register |
| w3 and w5. |
| |
| Now the SE proxy SP requires this arguments to be in register w4. |
| |
| This change is to pass interface ID(31:16) and event ID(15:0) |
| to SE proxy SP to trigger an event to secure enclave about |
| firmware update. |
| |
| Signed-off-by: Vishnu Banavath <vishnu.banavath@arm.com> |
| Signed-off-by: Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com> |
| Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org> |
| --- |
| include/configs/corstone1000.h | 6 ++++++ |
| lib/efi_loader/efi_capsule.c | 11 +++++++---- |
| 2 files changed, 13 insertions(+), 4 deletions(-) |
| |
| diff --git a/include/configs/corstone1000.h b/include/configs/corstone1000.h |
| index db0f91335cef..a7445e61348b 100644 |
| --- a/include/configs/corstone1000.h |
| +++ b/include/configs/corstone1000.h |
| @@ -24,6 +24,12 @@ |
| #define CORSTONE1000_BUFFER_READY_EVT (0x1) |
| #define CORSTONE1000_KERNEL_STARTED_EVT (0x2) |
| |
| +#define PREP_SEPROXY_SVC_ID_MASK GENMASK(31, 16) |
| +#define PREP_SEPROXY_SVC_ID(x) (FIELD_PREP(PREP_SEPROXY_SVC_ID_MASK, (x))) |
| + |
| +#define PREP_SEPROXY_EVT_MASK GENMASK(15, 0) |
| +#define PREP_SEPROXY_EVT(x) (FIELD_PREP(PREP_SEPROXY_EVT_MASK, (x))) |
| + |
| /* Size in 4KB pages of the EFI capsule buffer */ |
| #define CORSTONE1000_CAPSULE_BUFFER_SIZE (8192) /* 32 MB */ |
| |
| diff --git a/lib/efi_loader/efi_capsule.c b/lib/efi_loader/efi_capsule.c |
| index a0689ba912fc..e08e97cf3fb7 100644 |
| --- a/lib/efi_loader/efi_capsule.c |
| +++ b/lib/efi_loader/efi_capsule.c |
| @@ -28,6 +28,8 @@ |
| #ifdef CONFIG_TARGET_CORSTONE1000 |
| #include <arm_ffa_helper.h> |
| #include <cpu_func.h> |
| +#include <linux/bitfield.h> |
| +#include <linux/bitops.h> |
| |
| void *__efi_runtime_data corstone1000_capsule_buf; /* capsule shared buffer virtual address */ |
| efi_guid_t corstone1000_capsule_guid = EFI_CORSTONE1000_CAPSULE_ID_GUID; |
| @@ -590,11 +592,12 @@ static int __efi_runtime efi_corstone1000_buffer_ready_event(u32 capsule_image_s |
| func_data.data0 = &part_id; |
| |
| /* |
| - * setting the buffer ready event arguments |
| + * setting the buffer ready event arguments in register w4: |
| + * - capsule update interface ID (31:16) |
| + * - the buffer ready event ID (15:0) |
| */ |
| - msg.a3 = CORSTONE1000_SEPROXY_UPDATE_SVC_ID; |
| - msg.a4 = capsule_image_size; |
| - msg.a5 = CORSTONE1000_BUFFER_READY_EVT; |
| + msg.a4 = PREP_SEPROXY_SVC_ID(CORSTONE1000_SEPROXY_UPDATE_SVC_ID) | |
| + PREP_SEPROXY_EVT(CORSTONE1000_BUFFER_READY_EVT); |
| |
| func_data.data1_size = sizeof(msg); |
| func_data.data1 = &msg; |
| -- |
| 2.37.1 |
| |