leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

powerpc/b4860qds: Add support to dump switch settings on b4860qds board

Browse Source 
This function is called by "qixis_reset switch" command
and switch settings are calculated from FPGA/qixis registers.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Shaveta Leekha <shaveta@freescale.com>
Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
This commit is contained in:
Shaveta Leekha 2012-12-23 19:25:42 +00:00 committed by Andy Fleming
parent c6cef92f63
commit 4354889b9b
1 changed files with 47 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
board/freescale/b4860qds/b4860qds.c
View File

@ -456,3 +456,50 @@ void ft_board_setup(void *blob, bd_t *bd)
fdt_fixup_board_enet(blob);
#endif
}
/*
* Dump board switch settings.
* The bits that cannot be read/sampled via some FPGA or some
* registers, they will be displayed as
* underscore in binary format. mask[] has those bits.
* Some bits are calculated differently than the actual switches
* if booting with overriding by FPGA.
*/
void qixis_dump_switch(void)
{
int i;
u8 sw[5];
/*
* Any bit with 1 means that bit cannot be reverse engineered.
* It will be displayed as _ in binary format.
*/
static const u8 mask[] = {0x07, 0, 0, 0xff, 0};
char buf[10];
u8 brdcfg[16], dutcfg[16];
for (i = 0; i < 16; i++) {
brdcfg[i] = qixis_read(offsetof(struct qixis, brdcfg[0]) + i);
dutcfg[i] = qixis_read(offsetof(struct qixis, dutcfg[0]) + i);
}
sw[0] = ((brdcfg[0] & 0x0f) << 4) | \
(brdcfg[9] & 0x08);
sw[1] = ((dutcfg[1] & 0x01) << 7) | \
((dutcfg[2] & 0x07) << 4) | \
((dutcfg[6] & 0x10) >> 1) | \
((dutcfg[6] & 0x80) >> 5) | \
((dutcfg[1] & 0x40) >> 5) | \
(dutcfg[6] & 0x01);
sw[2] = dutcfg[0];
sw[3] = 0;
sw[4] = ((brdcfg[1] & 0x30) << 2) | \
((brdcfg[1] & 0xc0) >> 2) | \
(brdcfg[1] & 0x0f);
puts("DIP switch settings:\n");
for (i = 0; i < 5; i++) {
printf("SW%d = 0b%s (0x%02x)\n",
i + 1, byte_to_binary_mask(sw[i], mask[i], buf), sw[i]);
}
}