From: Shaveta Leekha <shav...@freescale.com>
This function is called by "qixis_reset switch" command
and switch settings are calculated from FPGA/qixis registers.
Signed-off-by: York Sun <york...@freescale.com>
Signed-off-by: Shaveta Leekha <shav...@freescale.com>
Signed-off-by: Poonam Aggrwal <poonam.aggr...@freescale.com>
---
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]);
+ }
+}
--
1.6.5.6
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