ppc4xx: Add AMCC Arches board support (dual 460GT)

The Arches Evaluation board is based on the AMCC 460GT SoC chip.
This board is a dual processor board with each processor providing
independent resources for Rapid IO, Gigabit Ethernet, and serial
communications. Each 460GT has it's own 512MB DDR2 memory, 32MB NOR
FLASH, UART, EEPROM and temperature sensor, along with a shared debug
port. The two 460GT's will communicate with each other via shared
memory, Gigabit Ethernet and x1 PCI-Express.

Signed-off-by: Adam Graham <agraham@amcc.com>
Signed-off-by: Victor Gallardo <vgallardo@amcc.com>
Signed-off-by: Stefan Roese <sr@denx.de>

1 files changed, 140 insertions, 0 deletions

diff --git a/board/amcc/canyonlands/canyonlands.c b/board/amcc/canyonlands/canyonlands.c
index e9186f8..2b74689 100644
--- a/board/amcc/canyonlands/canyonlands.c
+++ b/board/amcc/canyonlands/canyonlands.c
@@ -38,11 +38,52 @@ DECLARE_GLOBAL_DATA_PTR;
 #define BOARD_CANYONLANDS_PCIE	1
 #define BOARD_CANYONLANDS_SATA	2
 #define BOARD_GLACIER		3
+#define BOARD_ARCHES		4
+
+#if defined(CONFIG_ARCHES)
+/*
+ * FPGA read/write helper macros
+ */
+static inline int board_fpga_read(int offset)
+{
+	int data;
+
+	data = in_8((void *)(CONFIG_SYS_FPGA_BASE + offset));
+
+	return data;
+}
+
+static inline void board_fpga_write(int offset, int data)
+{
+	out_8((void *)(CONFIG_SYS_FPGA_BASE + offset), data);
+}
+
+/*
+ * CPLD read/write helper macros
+ */
+static inline int board_cpld_read(int offset)
+{
+	int data;
+
+	out_8((void *)(CONFIG_SYS_CPLD_ADDR), offset);
+	data = in_8((void *)(CONFIG_SYS_CPLD_DATA));
+
+	return data;
+}
+
+static inline void board_cpld_write(int offset, int data)
+{
+	out_8((void *)(CONFIG_SYS_CPLD_ADDR), offset);
+	out_8((void *)(CONFIG_SYS_CPLD_DATA), data);
+}
+#endif	/* defined(CONFIG_ARCHES) */
 
 int board_early_init_f(void)
 {
+#if !defined(CONFIG_ARCHES)
 	u32 sdr0_cust0;
 	u32 pvr = get_pvr();
+#endif
 
 	/*
 	 * Setup the interrupt controller polarities, triggers, etc.
@@ -79,6 +120,7 @@ int board_early_init_f(void)
 	mtdcr(uic3vr, 0x00000000);	/* int31 highest, base=0x000 */
 	mtdcr(uic3sr, 0xffffffff);	/* clear all */
 
+#if !defined(CONFIG_ARCHES)
 	/* SDR Setting - enable NDFC */
 	mfsdr(SDR0_CUST0, sdr0_cust0);
 	sdr0_cust0 = SDR0_CUST0_MUX_NDFC_SEL	|
@@ -88,6 +130,7 @@ int board_early_init_f(void)
 		SDR0_CUST0_NDFC_BAC_ENCODE(3)	|
 		(0x80000000 >> (28 + CONFIG_SYS_NAND_CS));
 	mtsdr(SDR0_CUST0, sdr0_cust0);
+#endif
 
 	/*
 	 * Configure PFC (Pin Function Control) registers
@@ -98,6 +141,7 @@ int board_early_init_f(void)
 	/* Enable PCI host functionality in SDR0_PCI0 */
 	mtsdr(SDR0_PCI0, 0xe0000000);
 
+#if !defined(CONFIG_ARCHES)
 	/* Enable ethernet and take out of reset */
 	out_8((void *)CONFIG_SYS_BCSR_BASE + 6, 0);
 
@@ -123,10 +167,12 @@ int board_early_init_f(void)
 		gpio_config(16, GPIO_OUT, GPIO_ALT1, GPIO_OUT_1);
 		gpio_config(19, GPIO_OUT, GPIO_ALT1, GPIO_OUT_1);
 	}
+#endif
 
 	return 0;
 }
 
+#if !defined(CONFIG_ARCHES)
 static void canyonlands_sata_init(int board_type)
 {
 	u32 reg;
@@ -147,7 +193,26 @@ static void canyonlands_sata_init(int board_type)
 		SDR_WRITE(SDR0_SRST1, 0x00000000);
 	}
 }
+#endif	/* !defined(CONFIG_ARCHES) */
+
+int get_cpu_num(void)
+{
+	int cpu = NA_OR_UNKNOWN_CPU;
+
+#if defined(CONFIG_ARCHES)
+	int cpu_num;
+
+	cpu_num = board_fpga_read(0x3);
+
+	/* sanity check; assume cpu numbering starts and increments from 0 */
+	if ((cpu_num >= 0) && (cpu_num < CONFIG_BD_NUM_CPUS))
+		cpu = cpu_num;
+#endif
+
+	return cpu;
+}
 
+#if !defined(CONFIG_ARCHES)
 int checkboard(void)
 {
 	char *s = getenv("serial#");
@@ -188,6 +253,39 @@ int checkboard(void)
 	return (0);
 }
 
+#else	/* defined(CONFIG_ARCHES) */
+
+int checkboard(void)
+{
+	char *s = getenv("serial#");
+
+	printf("Board: Arches - AMCC DUAL PPC460GT Reference Design\n");
+	printf("       Revision %02x.%02x ",
+				board_fpga_read(0x0), board_fpga_read(0x1));
+
+	gd->board_type = BOARD_ARCHES;
+
+	/* Only CPU0 has access to CPLD registers */
+	if (get_cpu_num() == 0) {
+		u8 cfg_sw = board_cpld_read(0x1);
+		printf("(FPGA=%02x, CPLD=%02x)\n",
+				board_fpga_read(0x2), board_cpld_read(0x0));
+		printf("       Configuration Switch %d%d%d%d\n",
+				((cfg_sw >> 3) & 0x01),
+				((cfg_sw >> 2) & 0x01),
+				((cfg_sw >> 1) & 0x01),
+				((cfg_sw >> 0) & 0x01));
+	} else
+		printf("(FPGA=%02x, CPLD=xx)\n", board_fpga_read(0x2));
+
+
+	if (s != NULL)
+		printf("       Serial# %s\n", s);
+
+	return 0;
+}
+#endif	/* !defined(CONFIG_ARCHES) */
+
 /*
  * Override the default functions in cpu/ppc4xx/44x_spd_ddr2.c with
  * board specific values.
@@ -389,6 +487,7 @@ int board_early_init_r (void)
 	return 0;
 }
 
+#if !defined(CONFIG_ARCHES)
 int misc_init_r(void)
 {
 	u32 sdr0_srst1 = 0;
@@ -434,6 +533,47 @@ int misc_init_r(void)
 	return 0;
 }
 
+#else	/* defined(CONFIG_ARCHES) */
+
+int misc_init_r(void)
+{
+	u32 eth_cfg = 0;
+	u32 eth_pll;
+	u32 reg;
+
+	/*
+	 * Set EMAC mode/configuration (GMII, SGMII, RGMII...).
+	 * This is board specific, so let's do it here.
+	 */
+
+	/* enable SGMII mode */
+	eth_cfg |= (SDR0_ETH_CFG_SGMII0_ENABLE |
+			SDR0_ETH_CFG_SGMII1_ENABLE |
+			SDR0_ETH_CFG_SGMII2_ENABLE);
+
+	/* Set EMAC for MDIO */
+	eth_cfg |= SDR0_ETH_CFG_MDIO_SEL_EMAC0;
+
+	/* bypass the TAHOE0/TAHOE1 cores for U-Boot */
+	eth_cfg |= (SDR0_ETH_CFG_TAHOE0_BYPASS | SDR0_ETH_CFG_TAHOE1_BYPASS);
+
+	mtsdr(SDR0_ETH_CFG, eth_cfg);
+
+	/* reset all SGMII interfaces */
+	mfsdr(SDR0_SRST1,   reg);
+	reg |= (SDR0_SRST1_SGMII0 | SDR0_SRST1_SGMII1 | SDR0_SRST1_SGMII2);
+	mtsdr(SDR0_SRST1, reg);
+	mtsdr(SDR0_ETH_STS, 0xFFFFFFFF);
+	mtsdr(SDR0_SRST1,   0x00000000);
+
+	do {
+		mfsdr(SDR0_ETH_PLL, eth_pll);
+	} while (!(eth_pll & SDR0_ETH_PLL_PLLLOCK));
+
+	return 0;
+}
+#endif	/* !defined(CONFIG_ARCHES) */
+
 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
 void ft_board_setup(void *blob, bd_t *bd)
 {