From 4354889b9b62e8c42b424edef36b14c178f32e37 Mon Sep 17 00:00:00 2001 From: Shaveta Leekha Date: Sun, 23 Dec 2012 19:25:42 +0000 Subject: [PATCH] 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 Signed-off-by: Shaveta Leekha Signed-off-by: Poonam Aggrwal Signed-off-by: Andy Fleming --- board/freescale/b4860qds/b4860qds.c | 47 +++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/board/freescale/b4860qds/b4860qds.c b/board/freescale/b4860qds/b4860qds.c index 88bdc1f65f..3c470db9f6 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]); + } +} -- 2.25.1