From ede9bee7f22fd5d0e1bacb7689f1cac23992b70b Mon Sep 17 00:00:00 2001
From: Josh Rahm <joshuarahm@gmail.com>
Date: Fri, 15 Nov 2024 02:48:27 -0700
Subject: UART is working.

---
 fdl/ch573/gpio.fdl | 10 ++++++++--
 fdl/ch573/pwr.fdl  | 28 ++++++++++++++++++++++++++++
 fdl/ch573/uart.fdl | 11 ++++++++++-
 3 files changed, 46 insertions(+), 3 deletions(-)
 create mode 100644 fdl/ch573/pwr.fdl

(limited to 'fdl')

diff --git a/fdl/ch573/gpio.fdl b/fdl/ch573/gpio.fdl
index c54d956..bab481a 100644
--- a/fdl/ch573/gpio.fdl
+++ b/fdl/ch573/gpio.fdl
@@ -34,7 +34,10 @@ package ch573.gpio {
     };
 
     /** Pin input register. */
-    reg pin(32);
+    reg pin(32) : struct {
+      in : bit_t[16];
+      reserved(16);
+    };
 
     /** Pin output register. */
     reg (32) : struct {
@@ -46,7 +49,10 @@ package ch573.gpio {
     reg clr(32);
 
     /** Pull-up resistor configuration. */
-    reg pu(32);
+    reg (32) : struct {
+      pu : enable_t[16];
+      reserved(16);
+    };
 
     /** pull-down/drive configuration register. */
     reg (32) : struct {
diff --git a/fdl/ch573/pwr.fdl b/fdl/ch573/pwr.fdl
new file mode 100644
index 0000000..65f2dbb
--- /dev/null
+++ b/fdl/ch573/pwr.fdl
@@ -0,0 +1,28 @@
+import "ch573/common.fdl";
+
+/** Package for the system power control registers. */
+package ch573.pwr {
+  location pwr_base = 0x4000100C;
+
+  bits clock_source_status_t : enum(1) {
+    [[ c: unqualified ]]
+    CLK_SOURCE_ENABLED = 0,
+    [[ c: unqualified ]]
+    CLK_SOURCE_DISABLED = 1,
+  };
+
+  type pwr_mgmt_t : struct {
+    reg slp_clk_off_0(8) : struct {
+      tmr0 : clock_source_status_t;
+      tmr1 : clock_source_status_t;
+      tmr2 : clock_source_status_t;
+      tmr3 : clock_source_status_t;
+      uart0 : clock_source_status_t;
+      uart1 : clock_source_status_t;
+      uart2 : clock_source_status_t;
+      uart3 : clock_source_status_t;
+    };
+  };
+
+  instance pwr_mgmt at pwr_base : pwr_mgmt_t;
+};
diff --git a/fdl/ch573/uart.fdl b/fdl/ch573/uart.fdl
index bc2df2d..9a4f0c5 100644
--- a/fdl/ch573/uart.fdl
+++ b/fdl/ch573/uart.fdl
@@ -70,7 +70,16 @@ package ch573.uart {
     /** Line Control Register */
     reg lcr(8) : struct {
       /** UART word size (5-8 bits) */
-      word_sz   : (2);
+      word_sz   : enum(2) {
+         [[ c: unqualified ]]
+         WORD_SZ_5_BITS = 0b00,
+         [[ c: unqualified ]]
+         WORD_SZ_6_BITS = 0b01,
+         [[ c: unqualified ]]
+         WORD_SZ_7_BITS = 0b10,
+         [[ c: unqualified ]]
+         WORD_SZ_8_BITS = 0b11,
+      };
       /** Stop bit setting */
       stop_bit  : bit_t;
       /** Parity bit enable */
-- 
cgit