On Tuesday 19 May 2009 12:54:31 Raúl Sánchez Siles wrote:
> Hello:
>
> This is my first try to implement the x16_as_x8 flash bank option. It is
> working for me as I would expect flash to work, but please consider this
> patchset as work in progress since it may still has some flaws.
>
> Al patches touch just src/flash/cfi.c file and should apply in this order
> to trunk.
>
> The patchset consists of 4 patches, whose interest areas I
> explain and comment below:
>
> 02-x16_as_x8-command_address
> · Creation of a command_address function intended as flash addresses
> arranger depending on the x16_as_x8 parameter existence or not. This is
> basically an override of flash_address function, only that takes into
> account the x16_as_x8 parameter. The other options for this functionality
> would be adding an additional parameter to flash_address function or, if it
> is shown that it is an equivalent of flash_address, include x16_as_x8
> functionality into flash_address.
>
--
Raúl Sánchez Siles
Departamento de Montaje
INFOGLOBAL, S. A.
* C/ Virgilio, 2. Ciudad de la Imagen.
28223 Pozuelo de Alarcón (Madrid), España
* T: +34 91 506 40 00
* F: +34 91 506 40 01
--- a/src/flash/cfi.c
+++ b/src/flash/cfi.c
@@ -127,6 +127,26 @@
}
+/* inline u32 command_address(flash_bank_t *bank, int sector, u32 offset) */
+static __inline__ u32 command_address(flash_bank_t *bank, int sector, u32 offset)
+{
+ cfi_flash_bank_t *cfi_info = bank->driver_priv;
+
+ /* while the sector list isn't built, only accesses to sector 0 work */
+ if (sector == 0)
+ return bank->base + (offset * bank->bus_width << cfi_info->x16_as_x8 );
+ else
+ {
+ if (!bank->sectors)
+ {
+ LOG_ERROR("BUG: sector list not yet built");
+ exit(-1);
+ }
+ return bank->base + bank->sectors[sector].offset + (offset * bank->bus_width << cfi_info->x16_as_x8 );
+ }
+
+}
+
static void cfi_command(flash_bank_t *bank, u8 cmd, u8 *cmd_buf)
{
int i;
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