[PATCH v7 09/24] efi: Add a few comments to the stub

Simon Glass sjg at chromium.org
Sat Dec 18 19:28:35 CET 2021


Comment some functions that need more information.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

(no changes since v6)

Changes in v6:
- Fix comment style in setup_info_table()

 lib/efi/efi_stub.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/lib/efi/efi_stub.c b/lib/efi/efi_stub.c
index b3393e47fae..e8a594cb2aa 100644
--- a/lib/efi/efi_stub.c
+++ b/lib/efi/efi_stub.c
@@ -225,6 +225,22 @@ static int get_codeseg32(void)
 	return cs32;
 }
 
+/**
+ * setup_info_table() - sets up a table containing information from EFI
+ *
+ * We must call exit_boot_services() before jumping out of the stub into U-Boot
+ * proper, so that U-Boot has full control of peripherals, memory, etc.
+ *
+ * Once we do this, we cannot call any boot-services functions so we must find
+ * out everything we need to before doing that.
+ *
+ * Set up a struct efi_info_hdr table which can hold various records (e.g.
+ * struct efi_entry_memmap) with information obtained from EFI.
+ *
+ * @priv: Pointer to our private information which contains the list
+ * @size: Size of the table to allocate
+ * Return: 0 if OK, non-zero on error
+ */
 static int setup_info_table(struct efi_priv *priv, int size)
 {
 	struct efi_info_hdr *info;
@@ -248,6 +264,12 @@ static int setup_info_table(struct efi_priv *priv, int size)
 	return 0;
 }
 
+/**
+ * add_entry_addr() - Add a new entry to the efi_info list
+ *
+ * @priv: Pointer to our private information which contains the list
+ *
+ */
 static void add_entry_addr(struct efi_priv *priv, enum efi_entry_t type,
 			   void *ptr1, int size1, void *ptr2, int size2)
 {
-- 
2.34.1.173.g76aa8bc2d0-goog



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