soc/amd/common/vboot: Split transfer buffer methods into separate file

I want to reuse the transfer buffer methods in SMM, so I need to add
them into their own file. I renamed `setup_cbmem_console` to
`replay_transfer_buffer_cbmemc` so it has a more descriptive name. I
also fixed the comment on `verify_psp_transfer_buf`.

BUG=b:221231786
TEST=Boot guybrush to OS

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I4f3a8b414b91f601c3a9c3dc7af8f388286fe4da
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62348
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/soc/amd/sabrina/include/soc/psp_transfer.h b/src/soc/amd/sabrina/include/soc/psp_transfer.h
index 60555991ca..0fe204d2d3 100644
--- a/src/soc/amd/sabrina/include/soc/psp_transfer.h
+++ b/src/soc/amd/sabrina/include/soc/psp_transfer.h
@@ -50,9 +50,13 @@ _Static_assert(sizeof(struct transfer_info_struct) == TRANSFER_INFO_SIZE,
 		"TRANSFER_INFO_SIZE is incorrect");
 
 /* Make sure the PSP transferred information over to x86 side. */
+int transfer_buffer_valid(const struct transfer_info_struct *ptr);
+/* Verify vboot work buffer is valid in transfer buffer */
 void verify_psp_transfer_buf(void);
 /* Display the transfer block's PSP_info data */
 void show_psp_transfer_info(void);
+/* Replays the pre-x86 cbmem console into the x86 cbmem console */
+void replay_transfer_buffer_cbmemc(const struct transfer_info_struct *info);
 /* Called by bootblock_c_entry in the VBOOT_STARTS_BEFORE_BOOTBLOCK case */
 void boot_with_psp_timestamp(uint64_t base_timestamp);