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authorH. Peter Anvin <hpa@zytor.com>2010-03-06 11:55:57 -0800
committerH. Peter Anvin <hpa@zytor.com>2010-03-06 11:55:57 -0800
commite375515ddc712f1f69ee21337db2a3267caa5d49 (patch)
tree234cecab51fe9bfb341289ce0d0620543f77f047 /doc/comboot.txt
parentead9bc6ff2fdfffc2f0974bb8de02f54a7671922 (diff)
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Add 32-bit versions of open file/close file
Add 32-bit API calls for open file and close file. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'doc/comboot.txt')
-rw-r--r--doc/comboot.txt16
1 files changed, 16 insertions, 0 deletions
diff --git a/doc/comboot.txt b/doc/comboot.txt
index b970b281..8adff330 100644
--- a/doc/comboot.txt
+++ b/doc/comboot.txt
@@ -320,6 +320,16 @@ AX=0006h [2.08] Open file
In 3.70 or later, EAX can contain -1 indicating that the file
length is unknown.
+ 32-BIT VERSION:
+
+ int cs_pm->open_file(const char *filename, struct com32_filedata *data)
+
+ filename - null-terminated filename
+ data - pointer to a file data buffer
+
+ Returns the file handle, or -1 on failure.
+ The file data buffer contains block size and file size.
+
AX=0007h [2.08] Read file
@@ -373,6 +383,12 @@ AX=0008h [2.08] Close file
WARNING: Calling this function with an invalid file handle
will probably crash the system.
+ 32-BIT VERSION:
+
+ void cs_pm->close_file(uint16_t handle)
+
+ handle - file handle to close
+
AX=0009h [2.00] Call PXE Stack [PXELINUX ONLY]