armv8/ls1043ardb: Add LS1043ARDB board support

LS1043ARDB Specification:
-------------------------
Memory subsystem:
 * 2GByte DDR4 SDRAM (32bit bus)
 * 128 Mbyte NOR flash single-chip memory
 * 512 Mbyte NAND flash
 * 16 Mbyte high-speed SPI flash
 * SD connector to interface with the SD memory card

Ethernet:
 * XFI 10G port
 * QSGMII with 4x 1G ports
 * Two RGMII ports

PCIe:
 * PCIe2 (Lanes C) to mini-PCIe slot
 * PCIe3 (Lanes D) to PCIe slot

USB 3.0: two super speed USB 3.0 type A ports

UART: supports two UARTs up to 115200 bps for console

Signed-off-by: Hou Zhiqiang <B48286@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Mingkai Hu <Mingkai.Hu@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Gong Qianyu <Qianyu.Gong@freescale.com>

1 files changed, 115 insertions, 0 deletions

diff --git a/board/freescale/ls1043ardb/cpld.c b/board/freescale/ls1043ardb/cpld.c
new file mode 100644
index 0000000000..3f1101ed7c
--- /dev/null
+++ b/board/freescale/ls1043ardb/cpld.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2015 Freescale Semiconductor
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ * Freescale LS1043ARDB board-specific CPLD controlling supports.
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/io.h>
+#include "cpld.h"
+
+u8 cpld_read(unsigned int reg)
+{
+	void *p = (void *)CONFIG_SYS_CPLD_BASE;
+
+	return in_8(p + reg);
+}
+
+void cpld_write(unsigned int reg, u8 value)
+{
+	void *p = (void *)CONFIG_SYS_CPLD_BASE;
+
+	out_8(p + reg, value);
+}
+
+/* Set the boot bank to the alternate bank */
+void cpld_set_altbank(void)
+{
+	u8 reg4 = CPLD_READ(soft_mux_on);
+	u8 reg7 = CPLD_READ(vbank);
+
+	CPLD_WRITE(soft_mux_on, reg4 | CPLD_SW_MUX_BANK_SEL);
+
+	reg7 = (reg7 & ~CPLD_BANK_SEL_MASK) | CPLD_BANK_SEL_ALTBANK;
+	CPLD_WRITE(vbank, reg7);
+
+	CPLD_WRITE(system_rst, 1);
+}
+
+/* Set the boot bank to the default bank */
+void cpld_set_defbank(void)
+{
+	CPLD_WRITE(global_rst, 1);
+}
+
+#ifdef DEBUG
+static void cpld_dump_regs(void)
+{
+	printf("cpld_ver	= %x\n", CPLD_READ(cpld_ver));
+	printf("cpld_ver_sub	= %x\n", CPLD_READ(cpld_ver_sub));
+	printf("pcba_ver	= %x\n", CPLD_READ(pcba_ver));
+	printf("soft_mux_on	= %x\n", CPLD_READ(soft_mux_on));
+	printf("cfg_rcw_src1	= %x\n", CPLD_READ(cfg_rcw_src1));
+	printf("cfg_rcw_src2	= %x\n", CPLD_READ(cfg_rcw_src2));
+	printf("vbank		= %x\n", CPLD_READ(vbank));
+	printf("sysclk_sel	= %x\n", CPLD_READ(sysclk_sel));
+	printf("uart_sel	= %x\n", CPLD_READ(uart_sel));
+	printf("sd1refclk_sel	= %x\n", CPLD_READ(sd1refclk_sel));
+	printf("tdmclk_mux_sel	= %x\n", CPLD_READ(tdmclk_mux_sel));
+	printf("sdhc_spics_sel	= %x\n", CPLD_READ(sdhc_spics_sel));
+	printf("status_led	= %x\n", CPLD_READ(status_led));
+	putc('\n');
+}
+#endif
+
+void cpld_rev_bit(unsigned char *value)
+{
+	u8 rev_val, val;
+	int i;
+
+	val = *value;
+	rev_val = val & 1;
+	for (i = 1; i <= 7; i++) {
+		val >>= 1;
+		rev_val <<= 1;
+		rev_val |= val & 1;
+	}
+
+	*value = rev_val;
+}
+
+int do_cpld(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	int rc = 0;
+
+	if (argc <= 1)
+		return cmd_usage(cmdtp);
+
+	if (strcmp(argv[1], "reset") == 0) {
+		if (strcmp(argv[2], "altbank") == 0)
+			cpld_set_altbank();
+		else
+			cpld_set_defbank();
+#ifdef DEBUG
+	} else if (strcmp(argv[1], "dump") == 0) {
+		cpld_dump_regs();
+#endif
+	} else {
+		rc = cmd_usage(cmdtp);
+	}
+
+	return rc;
+}
+
+U_BOOT_CMD(
+	cpld, CONFIG_SYS_MAXARGS, 1, do_cpld,
+	"Reset the board or alternate bank",
+	"reset: reset to default bank\n"
+	"cpld reset altbank: reset to alternate bank\n"
+#ifdef DEBUG
+	"cpld dump - display the CPLD registers\n"
+#endif
+);