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imx233: extend partition window support to be more generic

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The new code can select among several types of window (user, system, ...).
Furthermore, the type of partitions to use is selectable in config file.
Currently, two types are support: Freescale style MBR and Creative MBLK

Change-Id: I969d60a3d08f2c9448fb4b9c440051b7801b94cd
This commit is contained in:
Amaury Pouly 2013-10-22 00:03:04 +02:00
parent 5c7167c79c
commit 7d62a78af4
8 changed files with 153 additions and 23 deletions
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10
firmware/target/arm/imx233/sdmmc-imx233.c
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@ -664,12 +664,10 @@ static int init_drive(int drive)
/* compute window */
if((SDMMC_FLAGS(drive) & WINDOW) && imx233_partitions_is_window_enabled())
{
uint8_t mbr[512];
int ret = transfer_sectors(drive, 0, 1, mbr, true);
if(ret)
panicf("Cannot read MBR: %d", ret);
ret = imx233_partitions_compute_window(mbr, &window_start[drive],
&window_end[drive]);
/* NOTE: at this point the window shows the whole disk so raw disk
* accesses can be made to lookup partitions */
ret = imx233_partitions_compute_window(IF_MD(drive,) IMX233_PART_USER,
&window_start[drive], &window_end[drive]);
if(ret)
panicf("cannot compute partitions window: %d", ret);
SDMMC_INFO(drive).numblocks = window_end[drive] - window_start[drive];