mirrors/u-boot
0
0
Fork 0
mirror of https://github.com/u-boot/u-boot.git synced 2024-12-11 21:53:29 +08:00
Code Issues Packages Projects Releases Wiki Activity

powerpc/t4240qds: Add support to dump switch settings on t4240qds board

Browse Source 
This function is called by "qixis_reset switch" command and
switch settings are calculated from qixis FPGA 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 19:25:50 +00:00 committed by Andy Fleming
parent 4354889b9b
commit 4457e3e678
1 changed files with 60 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

60
board/freescale/t4qds/t4qds.c
View File

@ -405,3 +405,63 @@ void ft_board_setup(void *blob, bd_t *bd)
fdt_fixup_board_enet(blob);
#endif
}
/*
* Reverse engineering switch settings.
* Some bits cannot be figured out. 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[9];
/*
* Any bit with 1 means that bit cannot be reverse engineered.
* It will be displayed as _ in binary format.
*/
static const u8 mask[] = {0, 0, 0, 0, 0, 0x1, 0xdf, 0x3f, 0x1f};
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] = dutcfg[0];
sw[1] = (dutcfg[1] << 0x07) | \
((dutcfg[12] & 0xC0) >> 1) | \
((dutcfg[11] & 0xE0) >> 3) | \
((dutcfg[6] & 0x80) >> 6) | \
((dutcfg[1] & 0x80) >> 7);
sw[2] = ((brdcfg[1] & 0x0f) << 4) | \
((brdcfg[1] & 0x30) >> 2) | \
((brdcfg[1] & 0x40) >> 5) | \
((brdcfg[1] & 0x80) >> 7);
sw[3] = brdcfg[2];
sw[4] = ((dutcfg[2] & 0x01) << 7) | \
((dutcfg[2] & 0x06) << 4) | \
((~QIXIS_READ(present)) & 0x10) | \
((brdcfg[3] & 0x80) >> 4) | \
((brdcfg[3] & 0x01) << 2) | \
((brdcfg[6] == 0x62) ? 3 : \
((brdcfg[6] == 0x5a) ? 2 : \
((brdcfg[6] == 0x5e) ? 1 : 0)));
sw[5] = ((brdcfg[0] & 0x0f) << 4) | \
((QIXIS_READ(rst_ctl) & 0x30) >> 2) | \
((brdcfg[0] & 0x40) >> 5);
sw[6] = (brdcfg[11] & 0x20);
sw[7] = (((~QIXIS_READ(rst_ctl)) & 0x40) << 1) | \
((brdcfg[5] & 0x10) << 2);
sw[8] = ((brdcfg[12] & 0x08) << 4) | \
((brdcfg[12] & 0x03) << 5);
puts("DIP switch (reverse-engineering)\n");
for (i = 0; i < 9; i++) {
printf("SW%d = 0b%s (0x%02x)\n",
i + 1, byte_to_binary_mask(sw[i], mask[i], buf), sw[i]);
}
}