From 88067d3a3e67317ac6deee027f17916e1d59351b Mon Sep 17 00:00:00 2001
From: logicog <git@logicog.de>
Date: Sun, 15 Jun 2025 18:19:43 +0200
Subject: [PATCH] Add command byte macros and NIC SFRs

---
 rtl837x_sfr.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/rtl837x_sfr.h b/rtl837x_sfr.h
index 70eb6e1..1301a36 100644
--- a/rtl837x_sfr.h
+++ b/rtl837x_sfr.h
@@ -8,6 +8,13 @@ __sfr __at(0xa5) SFR_DATA_16;
 __sfr __at(0xa6) SFR_DATA_8;
 __sfr __at(0xa7) SFR_DATA_0;
 
+// Command bytes to write to SFR_EXEC_GO
+#define SFR_EXEC_READ_REG 1
+#define SFR_EXEC_WRITE_REG 3
+#define SFR_EXEC_READ_SDS 5
+#define SFR_EXEC_WRITE_SDS 7
+#define SFR_EXEC_READ_SMI 9
+#define SFR_EXEC_WRITE_SMI 11
 
 /* SFR control registers for phy access via SMI/MDIO */
 __sfr __at(0xc2) SFR_SMI_REG_H;
@@ -71,3 +78,13 @@ __sfr __at(0xac) SFR_FLASH_DATA0;
 __sfr __at(0xab) SFR_FLASH_ADDR16;
 __sfr __at(0xaa) SFR_FLASH_ADDR8;
 __sfr __at(0xa9) SFR_FLASH_ADDR0;
+
+/*
+ * NIC Interface
+ */
+
+__sfr __at(0xb7) SFR_NIC_CTRL;
+__sfr __at(0xb3) SFR_NIC_DATA_H;
+__sfr __at(0xb4) SFR_NIC_DATA_L;
+__sfr __at(0xb5) SFR_NIC_DATA_X;
+__sfr __at(0xb5) SFR_NIC_DATA_Y;