mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 06:57:57 +00:00
1c48eee5b2
Refactoring of bcm47xx_nvram driver. It's used by bcm47xx and bcm53xx. Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
81 lines
2.5 KiB
Diff
81 lines
2.5 KiB
Diff
From fb009cbdd0693bd633f11e99526617b3d392cfad Mon Sep 17 00:00:00 2001
|
|
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
|
|
Date: Mon, 8 Mar 2021 10:03:16 +0100
|
|
Subject: [PATCH] firmware: bcm47xx_nvram: rename finding function and its
|
|
variables
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
1. Use "bcm47xx_" function name prefix for consistency
|
|
2. It takes flash start as argument so s/iobase/flash_start/
|
|
3. "off" was used for finding flash end so just call it "flash_size"
|
|
|
|
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
|
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
|
|
---
|
|
drivers/firmware/broadcom/bcm47xx_nvram.c | 24 ++++++++++++-----------
|
|
1 file changed, 13 insertions(+), 11 deletions(-)
|
|
|
|
--- a/drivers/firmware/broadcom/bcm47xx_nvram.c
|
|
+++ b/drivers/firmware/broadcom/bcm47xx_nvram.c
|
|
@@ -48,11 +48,13 @@ static u32 find_nvram_size(void __iomem
|
|
return 0;
|
|
}
|
|
|
|
-/* Probe for NVRAM header */
|
|
-static int nvram_find_and_copy(void __iomem *iobase, u32 lim)
|
|
+/**
|
|
+ * bcm47xx_nvram_find_and_copy - find NVRAM on flash mapping & copy it
|
|
+ */
|
|
+static int bcm47xx_nvram_find_and_copy(void __iomem *flash_start, size_t res_size)
|
|
{
|
|
struct nvram_header __iomem *header;
|
|
- u32 off;
|
|
+ size_t flash_size;
|
|
u32 size;
|
|
|
|
if (nvram_len) {
|
|
@@ -61,25 +63,25 @@ static int nvram_find_and_copy(void __io
|
|
}
|
|
|
|
/* TODO: when nvram is on nand flash check for bad blocks first. */
|
|
- off = FLASH_MIN;
|
|
- while (off <= lim) {
|
|
+ flash_size = FLASH_MIN;
|
|
+ while (flash_size <= res_size) {
|
|
/* Windowed flash access */
|
|
- size = find_nvram_size(iobase + off);
|
|
+ size = find_nvram_size(flash_start + flash_size);
|
|
if (size) {
|
|
- header = (struct nvram_header *)(iobase + off - size);
|
|
+ header = (struct nvram_header *)(flash_start + flash_size - size);
|
|
goto found;
|
|
}
|
|
- off <<= 1;
|
|
+ flash_size <<= 1;
|
|
}
|
|
|
|
/* Try embedded NVRAM at 4 KB and 1 KB as last resorts */
|
|
- header = (struct nvram_header *)(iobase + 4096);
|
|
+ header = (struct nvram_header *)(flash_start + 4096);
|
|
if (header->magic == NVRAM_MAGIC) {
|
|
size = NVRAM_SPACE;
|
|
goto found;
|
|
}
|
|
|
|
- header = (struct nvram_header *)(iobase + 1024);
|
|
+ header = (struct nvram_header *)(flash_start + 1024);
|
|
if (header->magic == NVRAM_MAGIC) {
|
|
size = NVRAM_SPACE;
|
|
goto found;
|
|
@@ -124,7 +126,7 @@ int bcm47xx_nvram_init_from_mem(u32 base
|
|
if (!iobase)
|
|
return -ENOMEM;
|
|
|
|
- err = nvram_find_and_copy(iobase, lim);
|
|
+ err = bcm47xx_nvram_find_and_copy(iobase, lim);
|
|
|
|
iounmap(iobase);
|
|
|