mips: mscc: luton+ocelot: Remove board config options, do probing

As we are moving to multi-dtb and board detection, remove static board
config options, and introduce board probing instead.

Luton: This add single-binary support for the two MSCC luton-based
reference boards - pcb090 and pcb091. The SoC chip ID is used to
determine the board type.

Ocelot: This add single-binary support for the two MSCC ocelot-based
reference boards - pcb120 and pcb123. The PHY ids on specific ports
are used to determine the board type.

Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com>

2 files changed, 88 insertions, 10 deletions

diff --git a/board/mscc/luton/luton.c b/board/mscc/luton/luton.c
index 41fc6d5..b509b6b 100644
--- a/board/mscc/luton/luton.c
+++ b/board/mscc/luton/luton.c
@@ -6,15 +6,18 @@
 #include <common.h>
 #include <asm/io.h>
 
-#define MSCC_GPIO_ALT0		0x88
-#define MSCC_GPIO_ALT1		0x8C
-
 DECLARE_GLOBAL_DATA_PTR;
 
+enum {
+	BOARD_TYPE_PCB090 = 0xAABBCD00,
+	BOARD_TYPE_PCB091,
+};
+
 void board_debug_uart_init(void)
 {
 	/* too early for the pinctrl driver, so configure the UART pins here */
-	setbits_le32(BASE_DEVCPU_GCB + MSCC_GPIO_ALT0, BIT(30) | BIT(31));
+	mscc_gpio_set_alternate(30, 1);
+	mscc_gpio_set_alternate(31, 1);
 }
 
 int board_early_init_r(void)
@@ -26,3 +29,38 @@ int board_early_init_r(void)
 	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE;
 	return 0;
 }
+
+static void do_board_detect(void)
+{
+	u32 chipid = (readl(BASE_DEVCPU_GCB + CHIP_ID) >> 12) & 0xFFFF;
+
+	if (chipid == 0x7428 || chipid == 0x7424)
+		gd->board_type = BOARD_TYPE_PCB091;    // Lu10
+	else
+		gd->board_type = BOARD_TYPE_PCB090;    // Lu26
+}
+
+#if defined(CONFIG_MULTI_DTB_FIT)
+int board_fit_config_name_match(const char *name)
+{
+	if (gd->board_type == BOARD_TYPE_PCB090 &&
+	    strcmp(name, "luton_pcb090") == 0)
+		return 0;
+
+	if (gd->board_type == BOARD_TYPE_PCB091 &&
+	    strcmp(name, "luton_pcb091") == 0)
+		return 0;
+
+	return -1;
+}
+#endif
+
+#if defined(CONFIG_DTB_RESELECT)
+int embedded_dtb_select(void)
+{
+	do_board_detect();
+	fdtdec_setup();
+
+	return 0;
+}
+#endif
diff --git a/board/mscc/ocelot/ocelot.c b/board/mscc/ocelot/ocelot.c
index d521a61..a557cac 100644
--- a/board/mscc/ocelot/ocelot.c
+++ b/board/mscc/ocelot/ocelot.c
@@ -12,16 +12,18 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#define MSCC_GPIO_ALT0		0x54
-#define MSCC_GPIO_ALT1		0x58
+enum {
+	BOARD_TYPE_PCB120 = 0xAABBCC00,
+	BOARD_TYPE_PCB123,
+};
 
 void external_cs_manage(struct udevice *dev, bool enable)
 {
 	u32 cs = spi_chip_select(dev);
 	/* IF_SI0_OWNER, select the owner of the SI interface
 	 * Encoding: 0: SI Slave
-	 *           1: SI Boot Master
-	 *           2: SI Master Controller
+	 *	     1: SI Boot Master
+	 *	     2: SI Master Controller
 	 */
 	if (!enable) {
 		writel(ICPU_SW_MODE_SW_PIN_CTRL_MODE |
@@ -40,8 +42,8 @@ void external_cs_manage(struct udevice *dev, bool enable)
 void board_debug_uart_init(void)
 {
 	/* too early for the pinctrl driver, so configure the UART pins here */
-	setbits_le32(BASE_DEVCPU_GCB + MSCC_GPIO_ALT0, BIT(6) | BIT(7));
-	clrbits_le32(BASE_DEVCPU_GCB + MSCC_GPIO_ALT1, BIT(6) | BIT(7));
+	mscc_gpio_set_alternate(6, 1);
+	mscc_gpio_set_alternate(7, 1);
 }
 
 int board_early_init_r(void)
@@ -56,3 +58,41 @@ int board_early_init_r(void)
 	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE;
 	return 0;
 }
+
+static void do_board_detect(void)
+{
+	u16 dummy = 0;
+
+	/* Enable MIIM */
+	mscc_gpio_set_alternate(14, 1);
+	mscc_gpio_set_alternate(15, 1);
+	if (mscc_phy_rd(1, 0, 0, &dummy) == 0)
+		gd->board_type = BOARD_TYPE_PCB120;
+	else
+		gd->board_type = BOARD_TYPE_PCB123;
+}
+
+#if defined(CONFIG_MULTI_DTB_FIT)
+int board_fit_config_name_match(const char *name)
+{
+	if (gd->board_type == BOARD_TYPE_PCB120 &&
+	    strcmp(name, "ocelot_pcb120") == 0)
+		return 0;
+
+	if (gd->board_type == BOARD_TYPE_PCB123 &&
+	    strcmp(name, "ocelot_pcb123") == 0)
+		return 0;
+
+	return -1;
+}
+#endif
+
+#if defined(CONFIG_DTB_RESELECT)
+int embedded_dtb_select(void)
+{
+	do_board_detect();
+	fdtdec_setup();
+
+	return 0;
+}
+#endif