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| author | Shaveta Leekha <shaveta@freescale.com> | 2012-12-23 19:25:42 +0000 |
|---|---|---|
| committer | Andy Fleming <afleming@freescale.com> | 2013-01-30 11:25:11 -0600 |
| commit | 4354889b9b62e8c42b424edef36b14c178f32e37 (patch) | |
| tree | c2e9fe1c6f0137118987677d25b4aab9aa8492b3 | |
| parent | c6cef92f6397b26a541867f32beb0286a70d8e05 (diff) | |
| download | u-boot-imx-4354889b9b62e8c42b424edef36b14c178f32e37.zip u-boot-imx-4354889b9b62e8c42b424edef36b14c178f32e37.tar.gz u-boot-imx-4354889b9b62e8c42b424edef36b14c178f32e37.tar.bz2 | |
powerpc/b4860qds: Add support to dump switch settings on b4860qds board
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>
| -rw-r--r-- | board/freescale/b4860qds/b4860qds.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/board/freescale/b4860qds/b4860qds.c b/board/freescale/b4860qds/b4860qds.c index 88bdc1f..3c470db 100644 --- a/board/freescale/b4860qds/b4860qds.c +++ b/board/freescale/b4860qds/b4860qds.c @@ -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]); + } +} |