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-rw-r--r--include/ns16550.h130
1 files changed, 37 insertions, 93 deletions
diff --git a/include/ns16550.h b/include/ns16550.h
index 87624bf422..ce606b5738 100644
--- a/include/ns16550.h
+++ b/include/ns16550.h
@@ -16,102 +16,46 @@
* by Richard Danter (richard.danter@windriver.com), (C) 2005 Wind River Systems
*/
-#if (CONFIG_SYS_NS16550_REG_SIZE == 1)
-struct NS16550 {
- unsigned char rbr; /* 0 */
- unsigned char ier; /* 1 */
- unsigned char fcr; /* 2 */
- unsigned char lcr; /* 3 */
- unsigned char mcr; /* 4 */
- unsigned char lsr; /* 5 */
- unsigned char msr; /* 6 */
- unsigned char scr; /* 7 */
-#if defined(CONFIG_OMAP730)
- unsigned char mdr1; /* 8 */
- unsigned char reg9; /* 9 */
- unsigned char regA; /* A */
- unsigned char regB; /* B */
- unsigned char regC; /* C */
- unsigned char regD; /* D */
- unsigned char regE; /* E */
- unsigned char regF; /* F */
- unsigned char reg10; /* 10 */
- unsigned char ssr; /* 11*/
-#endif
-} __attribute__ ((packed));
-#elif (CONFIG_SYS_NS16550_REG_SIZE == 2)
-struct NS16550 {
- unsigned short rbr; /* 0 */
- unsigned short ier; /* 1 */
- unsigned short fcr; /* 2 */
- unsigned short lcr; /* 3 */
- unsigned short mcr; /* 4 */
- unsigned short lsr; /* 5 */
- unsigned short msr; /* 6 */
- unsigned short scr; /* 7 */
-} __attribute__ ((packed));
-#elif (CONFIG_SYS_NS16550_REG_SIZE == 4)
-struct NS16550 {
- unsigned long rbr; /* 0 r */
- unsigned long ier; /* 1 rw */
- unsigned long fcr; /* 2 w */
- unsigned long lcr; /* 3 rw */
- unsigned long mcr; /* 4 rw */
- unsigned long lsr; /* 5 r */
- unsigned long msr; /* 6 r */
- unsigned long scr; /* 7 rw */
-}; /* No need to pack an already aligned struct */
-#elif (CONFIG_SYS_NS16550_REG_SIZE == -4)
-struct NS16550 {
- unsigned char rbr; /* 0 */
- int pad1:24;
- unsigned char ier; /* 1 */
- int pad2:24;
- unsigned char fcr; /* 2 */
- int pad3:24;
- unsigned char lcr; /* 3 */
- int pad4:24;
- unsigned char mcr; /* 4 */
- int pad5:24;
- unsigned char lsr; /* 5 */
- int pad6:24;
- unsigned char msr; /* 6 */
- int pad7:24;
- unsigned char scr; /* 7 */
- int pad8:24;
-#if defined(CONFIG_OMAP)
- unsigned char mdr1; /* mode select reset TL16C750*/
-#endif
-#ifdef CONFIG_OMAP1510
- int pad9:24;
- unsigned long pad[10];
- unsigned char osc_12m_sel;
- int pad10:24;
-#endif
-} __attribute__ ((packed));
-#elif (CONFIG_SYS_NS16550_REG_SIZE == -8)
-struct NS16550 {
- unsigned char rbr; /* 0 */
- unsigned char pad0[7];
- unsigned char ier; /* 1 */
- unsigned char pad1[7];
- unsigned char fcr; /* 2 */
- unsigned char pad2[7];
- unsigned char lcr; /* 3 */
- unsigned char pad3[7];
- unsigned char mcr; /* 4 */
- unsigned char pad4[7];
- unsigned char lsr; /* 5 */
- unsigned char pad5[7];
- unsigned char msr; /* 6 */
- unsigned char pad6[7];
- unsigned char scr; /* 7 */
- unsigned char pad7[7];
-} __attribute__ ((packed));
-#else
+/*
+ * Note that the following macro magic uses the fact that the compiler
+ * will not allocate storage for arrays of size 0
+ */
+
+#if !defined(CONFIG_SYS_NS16550_REG_SIZE) || (CONFIG_SYS_NS16550_REG_SIZE == 0)
#error "Please define NS16550 registers size."
+#elif (CONFIG_SYS_NS16550_REG_SIZE > 0)
+#define UART_REG(x) \
+ unsigned char prepad_##x[CONFIG_SYS_NS16550_REG_SIZE - 1]; \
+ unsigned char x;
+#elif (CONFIG_SYS_NS16550_REG_SIZE < 0)
+#define UART_REG(x) \
+ unsigned char x; \
+ unsigned char postpad_##x[-CONFIG_SYS_NS16550_REG_SIZE - 1];
#endif
+struct NS16550 {
+ UART_REG(rbr); /* 0 */
+ UART_REG(ier); /* 1 */
+ UART_REG(fcr); /* 2 */
+ UART_REG(lcr); /* 3 */
+ UART_REG(mcr); /* 4 */
+ UART_REG(lsr); /* 5 */
+ UART_REG(msr); /* 6 */
+ UART_REG(spr); /* 7 */
+ UART_REG(mdr1); /* 8 */
+ UART_REG(reg9); /* 9 */
+ UART_REG(regA); /* A */
+ UART_REG(regB); /* B */
+ UART_REG(regC); /* C */
+ UART_REG(regD); /* D */
+ UART_REG(regE); /* E */
+ UART_REG(uasr); /* F */
+ UART_REG(scr); /* 10*/
+ UART_REG(ssr); /* 11*/
+ UART_REG(reg12); /* 12*/
+ UART_REG(osc_12m_sel); /* 13*/
+};
+
#define thr rbr
#define iir fcr
#define dll rbr