lpc32xx: add support for board work_92105

Work_92105 from Work Microwave is an LPC3250-
based board with the following features:
- 64MB or 128MB SDR DRAM
- 1 GB SLC NAND, managed through MLC controller.
- Ethernet
- Ethernet + PHY SMSC8710
- I2C:
  - EEPROM (24M01-compatible)
  - RTC (DS1374-compatible)
  - Temperature sensor (DS620)
  - DACs (2 x MAX518)
- SPI (through SSP interface)
  - Port expander MAX6957
- LCD display (HD44780-compatible), controlled
  through the port expander and DACs

This board has SPL support, and uses the LPC32XX boot
image format.

Signed-off-by: Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>

1 files changed, 85 insertions, 0 deletions

diff --git a/board/work-microwave/work_92105/work_92105_spl.c b/board/work-microwave/work_92105/work_92105_spl.c
new file mode 100644
index 0000000..282a6dd
--- /dev/null
+++ b/board/work-microwave/work_92105/work_92105_spl.c
@@ -0,0 +1,85 @@
+/*
+ * WORK Microwave work_92105 board support
+ *
+ * (C) Copyright 2014  DENX Software Engineering GmbH
+ * Written-by: Albert ARIBAUD <albert.aribaud@3adev.fr>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/emc.h>
+#include <asm/gpio.h>
+#include <spl.h>
+#include "work_92105_display.h"
+
+struct emc_dram_settings dram_64mb = {
+	.cmddelay = 0x0001C000,
+	.config0 = 0x00005682,
+	.rascas0 = 0x00000302,
+	.rdconfig = 0x00000011,
+	.trp = 52631578,
+	.tras = 20833333,
+	.tsrex = 12500000,
+	.twr = 66666666,
+	.trc = 13888888,
+	.trfc = 10256410,
+	.txsr = 12500000,
+	.trrd = 1,
+	.tmrd = 1,
+	.tcdlr = 0,
+	.refresh = 128000,
+	.mode = 0x00018000,
+	.emode = 0x02000000
+};
+
+const struct emc_dram_settings dram_128mb = {
+	.cmddelay = 0x0001C000,
+	.config0 = 0x00005882,
+	.rascas0 = 0x00000302,
+	.rdconfig = 0x00000011,
+	.trp = 52631578,
+	.tras = 22222222,
+	.tsrex = 8333333,
+	.twr = 66666666,
+	.trc = 14814814,
+	.trfc = 10256410,
+	.txsr = 8333333,
+	.trrd = 1,
+	.tmrd = 1,
+	.tcdlr = 0,
+	.refresh = 128000,
+	.mode = 0x00030000,
+	.emode = 0x02000000
+};
+
+void spl_board_init(void)
+{
+	/* initialize serial port for console */
+	lpc32xx_uart_init(CONFIG_SYS_LPC32XX_UART);
+	/* initialize console */
+	preloader_console_init();
+	/* init DDR and NAND to chainload U-Boot */
+	ddr_init(&dram_128mb);
+	/*
+	 * If this is actually a 64MB module, then the highest column
+	 * bit in any address will be ignored, and thus address 0x80000000
+	 * should be mirrored at address 0x80000800. Test this.
+	 */
+	writel(0x31415926, 0x80000000); /* write Pi at 0x80000000 */
+	writel(0x16180339, 0x80000800); /* write Phi at 0x80000800 */
+	if (readl(0x80000000) == 0x16180339) /* check 0x80000000 */ {
+		/* actually 64MB mirrored: reconfigure controller */
+		ddr_init(&dram_64mb);
+	}
+	/* initialize NAND controller to load U-Boot from NAND */
+	lpc32xx_mlc_nand_init();
+}
+
+u32 spl_boot_device(void)
+{
+	return BOOT_DEVICE_NAND;
+}