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authorSoren Brinkmann <soren.brinkmann@xilinx.com>2016-09-29 11:44:41 -0700
committerMichal Simek <michal.simek@xilinx.com>2016-11-15 15:28:05 +0100
commit0cba6abbba5c0bd5c80e652c35d0bd74e644a49e (patch)
treee8f1197d4d81af1511dd360fa04bf5aa1ec8fac2 /board/xilinx/zynqmp
parent05c59d0bc83f28888e5f2cc11b679a721605a46b (diff)
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ARM64: zynqmp: Adjust to new SMC interface to get silicon version
The new FW interface returns the IDCODE and version register, leaving extracting bitfields to the caller. Cc: Michal Simek <michal.simek@xilinx.com> Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com> Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'board/xilinx/zynqmp')
-rw-r--r--board/xilinx/zynqmp/zynqmp.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c
index ba4dfbb..b0acaa5 100644
--- a/board/xilinx/zynqmp/zynqmp.c
+++ b/board/xilinx/zynqmp/zynqmp.c
@@ -86,6 +86,17 @@ static int chip_id(void)
smc_call(&regs);
+ /*
+ * SMC returns:
+ * regs[0][31:0] = status of the operation
+ * regs[0][63:32] = CSU.IDCODE register
+ * regs[1][31:0] = CSU.version register
+ */
+ regs.regs[0] = upper_32_bits(regs.regs[0]);
+ regs.regs[0] &= ZYNQMP_CSU_IDCODE_DEVICE_CODE_MASK |
+ ZYNQMP_CSU_IDCODE_SVD_MASK;
+ regs.regs[0] >>= ZYNQMP_CSU_IDCODE_SVD_SHIFT;
+
return regs.regs[0];
}