apf27: add support for the armadeus APF27 board

Signed-off-by: Philippe Reynes <tremyfr@yahoo.fr>
Signed-off-by: Eric Jarrige <eric.jarrige@armadeus.org>
Signed-off-by: Nicolas Colombain <nicolas.colombain@armadeus.com>

MAINTAINERS

@@ -724,6 +724,11 @@ Ilko Iliev <iliev@ronetix.at>
 	PM9263		AT91SAM9263
 	PM9G45		ARM926EJS (AT91SAM9G45 SoC)
 
+Eric Jarrige <eric.jarrige@armadeus.org>
+Philippe Reynes <tremyfr@yahoo.fr>
+
+	apf27		ARM926EJS (i.MX27 SoC)
+
 Michael Jones <michael.jones@matrix-vision.de>
 
 	omap3_mvblx	ARM ARMV7 (OMAP3xx SoC)

board/armadeus/apf27/Makefile

+#
+# (C) Copyright 2000-2004
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+# (C) Copyright 2012-2013
+# Eric Jarrige <eric.jarrige@armadeus.org>
+#
+# SPDX-License-Identifier:    GPL-2.0+
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(BOARD).o
+
+COBJS	:= apf27.o
+SOBJS	:= lowlevel_init.o
+
+SRCS	:= $(COBJS:.o=.c) $(SOBJS:.o=.S)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
+	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
+
+#########################################################################
+
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################

board/armadeus/apf27/apf27.c

+/*
+ * Copyright (C) 2008-2013 Eric Jarrige <eric.jarrige@armadeus.org>
+ *
+ * based on the files by
+ * Sascha Hauer, Pengutronix
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <environment.h>
+#include <jffs2/jffs2.h>
+#include <nand.h>
+#include <netdev.h>
+#include <asm/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/gpio.h>
+#include <asm/gpio.h>
+#include <asm/errno.h>
+#include "apf27.h"
+#include "crc.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Fuse bank 1 row 8 is "reserved for future use" and therefore available for
+ * customer use. The APF27 board uses this fuse to store the board revision:
+ * 0: initial board revision
+ * 1: first revision - Presence of the second RAM chip on the board is blown in
+ *     fuse bank 1 row 9  bit 0 - No hardware change
+ * N: to be defined
+ */
+static u32 get_board_rev(void)
+{
+	struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
+
+	return readl(&iim->bank[1].fuse_regs[8]);
+}
+
+/*
+ * Fuse bank 1 row 9 is "reserved for future use" and therefore available for
+ * customer use. The APF27 board revision 1 uses the bit 0 to permanently store
+ * the presence of the second RAM chip
+ * 0: AFP27 with 1 RAM of 64 MiB
+ * 1: AFP27 with 2 RAM chips of 64 MiB each (128MB)
+ */
+static int get_num_ram_bank(void)
+{
+	struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
+	int nr_dram_banks = 1;
+
+	if ((get_board_rev() > 0) && (CONFIG_NR_DRAM_BANKS > 1))
+		nr_dram_banks += readl(&iim->bank[1].fuse_regs[9]) & 0x01;
+	else
+		nr_dram_banks = CONFIG_NR_DRAM_POPULATED;
+
+	return nr_dram_banks;
+}
+
+static void apf27_port_init(int port, u32 gpio_dr, u32 ocr1, u32 ocr2,
+			    u32 iconfa1, u32 iconfa2, u32 iconfb1, u32 iconfb2,
+			    u32 icr1, u32 icr2, u32 imr, u32 gpio_dir, u32 gpr,
+			    u32 puen, u32 gius)
+{
+	struct gpio_port_regs *regs = (struct gpio_port_regs *)IMX_GPIO_BASE;
+
+	writel(gpio_dr,   &regs->port[port].gpio_dr);
+	writel(ocr1,      &regs->port[port].ocr1);
+	writel(ocr2,      &regs->port[port].ocr2);
+	writel(iconfa1,   &regs->port[port].iconfa1);
+	writel(iconfa2,   &regs->port[port].iconfa2);
+	writel(iconfb1,   &regs->port[port].iconfb1);
+	writel(iconfb2,   &regs->port[port].iconfb2);
+	writel(icr1,      &regs->port[port].icr1);
+	writel(icr2,      &regs->port[port].icr2);
+	writel(imr,       &regs->port[port].imr);
+	writel(gpio_dir,  &regs->port[port].gpio_dir);
+	writel(gpr,       &regs->port[port].gpr);
+	writel(puen,      &regs->port[port].puen);
+	writel(gius,      &regs->port[port].gius);
+}
+
+#define APF27_PORT_INIT(n) apf27_port_init(PORT##n, ACFG_DR_##n##_VAL,	  \
+	ACFG_OCR1_##n##_VAL, ACFG_OCR2_##n##_VAL, ACFG_ICFA1_##n##_VAL,	  \
+	ACFG_ICFA2_##n##_VAL, ACFG_ICFB1_##n##_VAL, ACFG_ICFB2_##n##_VAL, \
+	ACFG_ICR1_##n##_VAL, ACFG_ICR2_##n##_VAL, ACFG_IMR_##n##_VAL,	  \
+	ACFG_DDIR_##n##_VAL, ACFG_GPR_##n##_VAL, ACFG_PUEN_##n##_VAL,	  \
+	ACFG_GIUS_##n##_VAL)
+
+static void apf27_iomux_init(void)
+{
+	APF27_PORT_INIT(A);
+	APF27_PORT_INIT(B);
+	APF27_PORT_INIT(C);
+	APF27_PORT_INIT(D);
+	APF27_PORT_INIT(E);
+	APF27_PORT_INIT(F);
+}
+
+static int apf27_devices_init(void)
+{
+	int i;
+	unsigned int mode[] = {
+		PC5_PF_I2C2_DATA,
+		PC6_PF_I2C2_CLK,
+		PD17_PF_I2C_DATA,
+		PD18_PF_I2C_CLK,
+	};
+
+	for (i = 0; i < ARRAY_SIZE(mode); i++)
+		imx_gpio_mode(mode[i]);
+
+#ifdef CONFIG_MXC_UART
+	mx27_uart1_init_pins();
+#endif
+
+#ifdef CONFIG_FEC_MXC
+	mx27_fec_init_pins();
+#endif
+
+#ifdef CONFIG_MXC_MMC
+	mx27_sd2_init_pins();
+	imx_gpio_mode((GPIO_PORTF | GPIO_OUT | GPIO_PUEN | GPIO_GPIO | 16));
+	gpio_request(PC_PWRON, "pc_pwron");
+	gpio_set_value(PC_PWRON, 1);
+#endif
+	return 0;
+}
+
+static void apf27_setup_csx(void)
+{
+	struct weim_regs *weim = (struct weim_regs *)IMX_WEIM_BASE;
+
+	writel(ACFG_CS0U_VAL, &weim->cs0u);
+	writel(ACFG_CS0L_VAL, &weim->cs0l);
+	writel(ACFG_CS0A_VAL, &weim->cs0a);
+
+	writel(ACFG_CS1U_VAL, &weim->cs1u);
+	writel(ACFG_CS1L_VAL, &weim->cs1l);
+	writel(ACFG_CS1A_VAL, &weim->cs1a);
+
+	writel(ACFG_CS2U_VAL, &weim->cs2u);
+	writel(ACFG_CS2L_VAL, &weim->cs2l);
+	writel(ACFG_CS2A_VAL, &weim->cs2a);
+
+	writel(ACFG_CS3U_VAL, &weim->cs3u);
+	writel(ACFG_CS3L_VAL, &weim->cs3l);
+	writel(ACFG_CS3A_VAL, &weim->cs3a);
+
+	writel(ACFG_CS4U_VAL, &weim->cs4u);
+	writel(ACFG_CS4L_VAL, &weim->cs4l);
+	writel(ACFG_CS4A_VAL, &weim->cs4a);
+
+	writel(ACFG_CS5U_VAL, &weim->cs5u);
+	writel(ACFG_CS5L_VAL, &weim->cs5l);
+	writel(ACFG_CS5A_VAL, &weim->cs5a);
+
+	writel(ACFG_EIM_VAL, &weim->eim);
+}
+
+static void apf27_setup_port(void)
+{
+	struct system_control_regs *system =
+		(struct system_control_regs *)IMX_SYSTEM_CTL_BASE;
+
+	writel(ACFG_FMCR_VAL, &system->fmcr);
+}
+
+int board_init(void)
+{
+	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
+
+	apf27_setup_csx();
+	apf27_setup_port();
+	apf27_iomux_init();
+	apf27_devices_init();
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	gd->ram_size = get_ram_size((void *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
+	if (get_num_ram_bank() > 1)
+		gd->ram_size += get_ram_size((void *)PHYS_SDRAM_2,
+					     PHYS_SDRAM_2_SIZE);
+
+	return 0;
+}
+
+void dram_init_banksize(void)
+{
+	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+	gd->bd->bi_dram[0].size  = get_ram_size((void *)PHYS_SDRAM_1,
+						PHYS_SDRAM_1_SIZE);
+	gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
+	if (get_num_ram_bank() > 1)
+		gd->bd->bi_dram[1].size = get_ram_size((void *)PHYS_SDRAM_2,
+					     PHYS_SDRAM_2_SIZE);
+	else
+		gd->bd->bi_dram[1].size = 0;
+}
+
+ulong board_get_usable_ram_top(ulong total_size)
+{
+	ulong ramtop;
+
+	if (get_num_ram_bank() > 1)
+		ramtop = PHYS_SDRAM_2 + get_ram_size((void *)PHYS_SDRAM_2,
+						     PHYS_SDRAM_2_SIZE);
+	else
+		ramtop = PHYS_SDRAM_1 + get_ram_size((void *)PHYS_SDRAM_1,
+						     PHYS_SDRAM_1_SIZE);
+
+	return ramtop;
+}
+
+int checkboard(void)
+{
+	printf("Board: Armadeus APF27 revision %d\n", get_board_rev());
+	return 0;
+}
+
+#ifdef CONFIG_SPL_BUILD
+inline void hang(void)
+{
+	for (;;)
+		;
+}
+
+void board_init_f(ulong bootflag)
+{
+	/*
+	 * copy ourselves from where we are running to where we were
+	 * linked at. Use ulong pointers as all addresses involved
+	 * are 4-byte-aligned.
+	 */
+	ulong *start_ptr, *end_ptr, *link_ptr, *run_ptr, *dst;
+	asm volatile ("ldr %0, =_start" : "=r"(start_ptr));
+	asm volatile ("ldr %0, =_end" : "=r"(end_ptr));
+	asm volatile ("ldr %0, =board_init_f" : "=r"(link_ptr));
+	asm volatile ("adr %0, board_init_f" : "=r"(run_ptr));
+	for (dst = start_ptr; dst < end_ptr; dst++)
+		*dst = *(dst+(run_ptr-link_ptr));
+
+	/*
+	 * branch to nand_boot's link-time address.
+	 */
+	asm volatile("ldr pc, =nand_boot");
+}
+#endif /* CONFIG_SPL_BUILD */

board/armadeus/apf27/lowlevel_init.S

+/*
+ * (C) Copyright 2013 Philippe Reynes <tremyfr@yahoo.fr>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <config.h>
+#include <generated/asm-offsets.h>
+#include <version.h>
+#include <asm/macro.h>
+#include <asm/arch/imx-regs.h>
+#include "apf27.h"
+
+	.macro init_aipi
+	/*
+	 * setup AIPI1 and AIPI2
+	 */
+	write32 AIPI1_PSR0, ACFG_AIPI1_PSR0_VAL
+	write32 AIPI1_PSR1, ACFG_AIPI1_PSR1_VAL
+	write32 AIPI2_PSR0, ACFG_AIPI2_PSR0_VAL
+	write32 AIPI2_PSR1, ACFG_AIPI2_PSR1_VAL
+
+	/* Change SDRAM signal strengh */
+	ldr r0, =GPCR
+	ldr r1, =ACFG_GPCR_VAL
+	ldr r5, [r0]
+	orr r5, r5, r1
+	str r5, [r0]
+
+	.endm /* init_aipi */
+
+	.macro init_clock
+	ldr r0, =CSCR
+	/* disable MPLL/SPLL first */
+	ldr r1, [r0]
+	bic r1, r1, #(CSCR_MPEN|CSCR_SPEN)
+	str r1, [r0]
+
+ 	/*
+	 * pll clock initialization predefined in apf27.h
+	 */
+	write32 MPCTL0, ACFG_MPCTL0_VAL
+	write32 SPCTL0, ACFG_SPCTL0_VAL
+
+	write32 CSCR, ACFG_CSCR_VAL|CSCR_MPLL_RESTART|CSCR_SPLL_RESTART
+
+	/*
+	 * add some delay here
+	 */
+	mov r1, #0x1000
+	1:  subs r1, r1, #0x1
+	bne 1b
+
+	/* peripheral clock divider */
+	write32 PCDR0, ACFG_PCDR0_VAL
+	write32 PCDR1, ACFG_PCDR1_VAL
+
+	/* Configure PCCR0 and PCCR1 */
+	write32 PCCR0, ACFG_PCCR0_VAL
+	write32 PCCR1, ACFG_PCCR1_VAL
+
+	.endm /* init_clock */
+
+	.macro init_ddr
+	/* wait for SDRAM/LPDDR ready (SDRAMRDY) */
+	ldr		r0, =IMX_ESD_BASE
+	ldr		r4, =ESDMISC_SDRAM_RDY
+2:	ldr		r1, [r0, #ESDMISC_ROF]
+	ands		r1, r1, r4
+	bpl		2b
+
+	/* LPDDR Soft Reset Mobile/Low Power DDR SDRAM. */
+	ldr		r0, =IMX_ESD_BASE
+	ldr		r4, =ACFG_ESDMISC_VAL
+	orr		r1, r4, #ESDMISC_MDDR_DL_RST
+	str		r1, [r0, #ESDMISC_ROF]
+
+	/* Hold for more than 200ns */
+	ldr		r1, =0x10000
+1:	subs		r1, r1, #0x1
+	bne		1b
+
+	str		r4, [r0]
+
+	ldr		r0, =IMX_ESD_BASE
+	ldr		r1, =ACFG_SDRAM_ESDCFG_REGISTER_VAL
+	str		r1, [r0, #ESDCFG0_ROF]
+
+	ldr		r0, =IMX_ESD_BASE
+	ldr		r1, =ACFG_PRECHARGE_CMD
+	str		r1, [r0, #ESDCTL0_ROF]
+
+	/* write8(0xA0001000, any value) */
+	ldr		r1, =PHYS_SDRAM_1+ACFG_SDRAM_PRECHARGE_ALL_VAL
+	strb		r2, [r1]
+
+	ldr		r1, =ACFG_AUTOREFRESH_CMD
+	str		r1, [r0, #ESDCTL0_ROF]
+
+	ldr 		r4, =PHYS_SDRAM_1	/* CSD0 base address	*/
+
+	ldr 		r6,=0x7		/* load loop counter	*/
+1:	str 		r5,[r4]		/* run auto-refresh cycle to array 0 */
+	subs 		r6,r6,#1
+	bne 1b
+
+	ldr		r1, =ACFG_SET_MODE_REG_CMD
+	str		r1, [r0, #ESDCTL0_ROF]
+
+	/* set standard mode register */
+	ldr		r4, = PHYS_SDRAM_1+ACFG_SDRAM_MODE_REGISTER_VAL
+	strb		r2, [r4]
+
+	/* set extended mode register */
+	ldr		r4, =PHYS_SDRAM_1+ACFG_SDRAM_EXT_MODE_REGISTER_VAL
+	strb		r5, [r4]
+
+	ldr		r1, =ACFG_NORMAL_RW_CMD
+	str		r1, [r0, #ESDCTL0_ROF]
+
+	/* 2nd sdram */
+	ldr		r0, =IMX_ESD_BASE
+	ldr		r1, =ACFG_SDRAM_ESDCFG_REGISTER_VAL
+	str		r1, [r0, #ESDCFG1_ROF]
+
+	ldr		r0, =IMX_ESD_BASE
+	ldr		r1, =ACFG_PRECHARGE_CMD
+	str		r1, [r0, #ESDCTL1_ROF]
+
+	/* write8(0xB0001000, any value) */
+	ldr		r1, =PHYS_SDRAM_2+ACFG_SDRAM_PRECHARGE_ALL_VAL
+	strb		r2, [r1]
+
+	ldr		r1, =ACFG_AUTOREFRESH_CMD
+	str		r1, [r0, #ESDCTL1_ROF]
+
+	ldr 		r4, =PHYS_SDRAM_2	/* CSD1 base address */
+
+	ldr 		r6,=0x7		/* load loop counter */
+1:	str 		r5,[r4]		/* run auto-refresh cycle to array 0 */
+	subs 		r6,r6,#1
+	bne 1b
+
+	ldr		r1, =ACFG_SET_MODE_REG_CMD
+	str		r1, [r0, #ESDCTL1_ROF]
+
+	/* set standard mode register */
+	ldr		r4, =PHYS_SDRAM_2+ACFG_SDRAM_MODE_REGISTER_VAL
+	strb		r2, [r4]
+
+	/* set extended mode register */
+	ldr		r4, =PHYS_SDRAM_2+ACFG_SDRAM_EXT_MODE_REGISTER_VAL
+	strb		r2, [r4]
+
+	ldr		r1, =ACFG_NORMAL_RW_CMD
+	str		r1, [r0, #ESDCTL1_ROF]
+	.endm /* init_ddr */
+
+.globl lowlevel_init
+lowlevel_init:
+
+	init_aipi
+	init_clock
+#ifdef CONFIG_SPL_BUILD
+	init_ddr
+#endif
+
+	mov	pc, lr

boards.cfg

@@ -196,6 +196,7 @@ jadecpu                      arm         arm926ejs   jadecpu             syteco
 mx25pdk                      arm         arm926ejs   mx25pdk             freescale      mx25		mx25pdk:IMX_CONFIG=board/freescale/mx25pdk/imximage.cfg
 tx25                         arm         arm926ejs   tx25                karo           mx25
 zmx25                        arm         arm926ejs   zmx25               syteco         mx25
+apf27                        arm         arm926ejs   apf27               armadeus       mx27
 imx27lite                    arm         arm926ejs   imx27lite           logicpd        mx27
 magnesium                    arm         arm926ejs   imx27lite           logicpd        mx27
 apx4devkit                   arm         arm926ejs   apx4devkit          bluegiga       mxs		apx4devkit