From: "Gerd Hoffmann" <kraxel@redhat.com>
To: devel@edk2.groups.io
Cc: oliver@redhat.com, Gerd Hoffmann <kraxel@redhat.com>,
Laszlo Ersek <lersek@redhat.com>
Subject: [edk2-devel] [PATCH v3 3/6] OvmfPkg/VirtNorFlashDxe: add a loop for NorFlashWriteBuffer calls.
Date: Tue, 16 Jan 2024 18:11:02 +0100 [thread overview]
Message-ID: <20240116171105.37831-4-kraxel@redhat.com> (raw)
In-Reply-To: <20240116171105.37831-1-kraxel@redhat.com>
Replace the two NorFlashWriteBuffer() calls with a loop containing a
single NorFlashWriteBuffer() call.
With the changes in place the code is able to handle updates larger
than two P30_MAX_BUFFER_SIZE_IN_BYTES blocks, even though the patch
does not actually change the size limit.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
---
OvmfPkg/VirtNorFlashDxe/VirtNorFlash.c | 21 ++++++++-------------
1 file changed, 8 insertions(+), 13 deletions(-)
diff --git a/OvmfPkg/VirtNorFlashDxe/VirtNorFlash.c b/OvmfPkg/VirtNorFlashDxe/VirtNorFlash.c
index 88a4d2c23fc0..3d1343b381bc 100644
--- a/OvmfPkg/VirtNorFlashDxe/VirtNorFlash.c
+++ b/OvmfPkg/VirtNorFlashDxe/VirtNorFlash.c
@@ -521,6 +521,7 @@ NorFlashWriteSingleBlock (
UINTN BlockAddress;
UINT8 *OrigData;
UINTN Start, End;
+ UINT32 Index, Count;
DEBUG ((DEBUG_BLKIO, "NorFlashWriteSingleBlock(Parameters: Lba=%ld, Offset=0x%x, *NumBytes=0x%x, Buffer @ 0x%08x)\n", Lba, Offset, *NumBytes, Buffer));
@@ -621,23 +622,17 @@ NorFlashWriteSingleBlock (
goto Exit;
}
- Status = NorFlashWriteBuffer (
- Instance,
- BlockAddress + Start,
- P30_MAX_BUFFER_SIZE_IN_BYTES,
- Instance->ShadowBuffer
- );
- if (EFI_ERROR (Status)) {
- goto Exit;
- }
-
- if ((End - Start) > P30_MAX_BUFFER_SIZE_IN_BYTES) {
+ Count = (End - Start) / P30_MAX_BUFFER_SIZE_IN_BYTES;
+ for (Index = 0; Index < Count; Index++) {
Status = NorFlashWriteBuffer (
Instance,
- BlockAddress + Start + P30_MAX_BUFFER_SIZE_IN_BYTES,
+ BlockAddress + Start + Index * P30_MAX_BUFFER_SIZE_IN_BYTES,
P30_MAX_BUFFER_SIZE_IN_BYTES,
- Instance->ShadowBuffer + P30_MAX_BUFFER_SIZE_IN_BYTES
+ Instance->ShadowBuffer + Index * P30_MAX_BUFFER_SIZE_IN_BYTES
);
+ if (EFI_ERROR (Status)) {
+ goto Exit;
+ }
}
Exit:
--
2.43.0
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next prev parent reply other threads:[~2024-01-16 17:11 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-16 17:10 [edk2-devel] [PATCH v3 0/6] OvmfPkg/VirtNorFlashDxe: fix corruption + misc small improvements Gerd Hoffmann
2024-01-16 17:11 ` [edk2-devel] [PATCH v3 1/6] OvmfPkg/VirtNorFlashDxe: add casts to UINTN and UINT32 Gerd Hoffmann
2024-01-16 17:11 ` [edk2-devel] [PATCH v3 2/6] OvmfPkg/VirtNorFlashDxe: clarify block write logic & fix shadowbuffer reads Gerd Hoffmann
2024-01-16 17:11 ` Gerd Hoffmann [this message]
2024-01-16 17:11 ` [edk2-devel] [PATCH v3 4/6] OvmfPkg/VirtNorFlashDxe: allow larger writes without block erase Gerd Hoffmann
2024-01-16 17:11 ` [edk2-devel] [PATCH v3 5/6] OvmfPkg/VirtNorFlashDxe: ValidateFvHeader: unwritten state is EOL too Gerd Hoffmann
2024-01-16 17:11 ` [edk2-devel] [PATCH v3 6/6] OvmfPkg/VirtNorFlashDxe: move DoErase code block into new function Gerd Hoffmann
2024-01-17 10:20 ` Laszlo Ersek
2024-01-18 20:28 ` [edk2-devel] [PATCH v3 0/6] OvmfPkg/VirtNorFlashDxe: fix corruption + misc small improvements Laszlo Ersek
2024-01-19 7:52 ` Ard Biesheuvel
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