am33xx: Rework pinmux functions

- Move definition of the EEPROM contents to <asm/arch/sys_proto.h>
  - Make some defines a little less generic now.
- Pinmux must be done by done by SPL now.
- Create 3 pinmux functions, uart0, i2c0 and board.
- Add pinmux specific to Starter Kit EVM for MMC now.

Signed-off-by: Tom Rini <trini@ti.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-am33xx/sys_proto.h b/arch/arm/include/asm/arch-am33xx/sys_proto.h
index eef5573..8a4b248 100644
--- a/arch/arm/include/asm/arch-am33xx/sys_proto.h
+++ b/arch/arm/include/asm/arch-am33xx/sys_proto.h
@@ -19,6 +19,24 @@
 #ifndef _SYS_PROTO_H_
 #define _SYS_PROTO_H_
 
+/*
+ * AM335x parts define a system EEPROM that defines certain sub-fields.
+ * We use these fields to in turn see what board we are on, and what
+ * that might require us to set or not set.
+ */
+#define HDR_NO_OF_MAC_ADDR	3
+#define HDR_ETH_ALEN		6
+#define HDR_NAME_LEN		8
+
+struct am335x_baseboard_id {
+	unsigned int  magic;
+	char name[HDR_NAME_LEN];
+	char version[4];
+	char serial[12];
+	char config[32];
+	char mac_addr[HDR_NO_OF_MAC_ADDR][HDR_ETH_ALEN];
+};
+
 #define BOARD_REV_ID	0x0
 
 u32 get_cpu_rev(void);
@@ -31,4 +49,14 @@ int print_cpuinfo(void);
 u32 get_device_type(void);
 void setup_clocks_for_console(void);
 void ddr_pll_config(unsigned int ddrpll_M);
+
+/*
+ * We have three pin mux functions that must exist.  We must be able to enable
+ * uart0, for initial output and i2c0 to read the main EEPROM.  We then have a
+ * main pinmux function that can be overridden to enable all other pinmux that
+ * is required on the board.
+ */
+void enable_uart0_pin_mux(void);
+void enable_i2c0_pin_mux(void);
+void enable_board_pin_mux(struct am335x_baseboard_id *header);
 #endif