4 files changed, 491 insertions, 3 deletions

diff --git a/arch/arm/cpu/arm926ejs/mxs/mxs.c b/arch/arm/cpu/arm926ejs/mxs/mxs.c
index a5e388b..45667bd 100644
--- a/arch/arm/cpu/arm926ejs/mxs/mxs.c
+++ b/arch/arm/cpu/arm926ejs/mxs/mxs.c
@@ -76,13 +76,32 @@ void enable_caches(void)
 #endif
 }
 
+/*
+ * This function will craft a jumptable at 0x0 which will redirect interrupt
+ * vectoring to proper location of U-Boot in RAM.
+ *
+ * The structure of the jumptable will be as follows:
+ *  ldr pc, [pc, #0x18] ..... for each vector, thus repeated 8 times
+ *  <destination address> ... for each previous ldr, thus also repeated 8 times
+ *
+ * The "ldr pc, [pc, #0x18]" instruction above loads address from memory at
+ * offset 0x18 from current value of PC register. Note that PC is already
+ * incremented by 4 when computing the offset, so the effective offset is
+ * actually 0x20, this the associated <destination address>. Loading the PC
+ * register with an address performs a jump to that address.
+ */
 void mx28_fixup_vt(uint32_t start_addr)
 {
-	uint32_t *vt = (uint32_t *)0x20;
+	/* ldr pc, [pc, #0x18] */
+	const uint32_t ldr_pc = 0xe59ff018;
+	/* Jumptable location is 0x0 */
+	uint32_t *vt = (uint32_t *)0x0;
 	int i;
 
-	for (i = 0; i < 8; i++)
-		vt[i] = start_addr + (4 * i);
+	for (i = 0; i < 8; i++) {
+		vt[i] = ldr_pc;
+		vt[i + 8] = start_addr + (4 * i);
+	}
 }
 
 #ifdef	CONFIG_ARCH_MISC_INIT
diff --git a/arch/arm/cpu/armv7/vf610/Makefile b/arch/arm/cpu/armv7/vf610/Makefile
new file mode 100644
index 0000000..9232cd4
--- /dev/null
+++ b/arch/arm/cpu/armv7/vf610/Makefile
@@ -0,0 +1,42 @@
+#
+# Copyright 2013 Freescale Semiconductor, Inc.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(SOC).o
+
+COBJS	+= generic.o
+COBJS	+= timer.o
+
+SRCS	:= $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+
+all:	$(obj).depend $(LIB)
+
+$(LIB):	$(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/arch/arm/cpu/armv7/vf610/generic.c b/arch/arm/cpu/armv7/vf610/generic.c
new file mode 100644
index 0000000..87f2a86
--- /dev/null
+++ b/arch/arm/cpu/armv7/vf610/generic.c
@@ -0,0 +1,324 @@
+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/crm_regs.h>
+#include <netdev.h>
+#ifdef CONFIG_FSL_ESDHC
+#include <fsl_esdhc.h>
+#endif
+
+#ifdef CONFIG_FSL_ESDHC
+DECLARE_GLOBAL_DATA_PTR;
+#endif
+
+#ifdef CONFIG_MXC_OCOTP
+void enable_ocotp_clk(unsigned char enable)
+{
+	struct ccm_reg *ccm = (struct ccm_reg *)CCM_BASE_ADDR;
+	u32 reg;
+
+	reg = readl(&ccm->ccgr6);
+	if (enable)
+		reg |= CCM_CCGR6_OCOTP_CTRL_MASK;
+	else
+		reg &= ~CCM_CCGR6_OCOTP_CTRL_MASK;
+	writel(reg, &ccm->ccgr6);
+}
+#endif
+
+static u32 get_mcu_main_clk(void)
+{
+	struct ccm_reg *ccm = (struct ccm_reg *)CCM_BASE_ADDR;
+	u32 ccm_ccsr, ccm_cacrr, armclk_div;
+	u32 sysclk_sel, pll_pfd_sel = 0;
+	u32 freq = 0;
+
+	ccm_ccsr = readl(&ccm->ccsr);
+	sysclk_sel = ccm_ccsr & CCM_CCSR_SYS_CLK_SEL_MASK;
+	sysclk_sel >>= CCM_CCSR_SYS_CLK_SEL_OFFSET;
+
+	ccm_cacrr = readl(&ccm->cacrr);
+	armclk_div = ccm_cacrr & CCM_CACRR_ARM_CLK_DIV_MASK;
+	armclk_div >>= CCM_CACRR_ARM_CLK_DIV_OFFSET;
+	armclk_div += 1;
+
+	switch (sysclk_sel) {
+	case 0:
+		freq = FASE_CLK_FREQ;
+		break;
+	case 1:
+		freq = SLOW_CLK_FREQ;
+		break;
+	case 2:
+		pll_pfd_sel = ccm_ccsr & CCM_CCSR_PLL2_PFD_CLK_SEL_MASK;
+		pll_pfd_sel >>= CCM_CCSR_PLL2_PFD_CLK_SEL_OFFSET;
+		if (pll_pfd_sel == 0)
+			freq = PLL2_MAIN_FREQ;
+		else if (pll_pfd_sel == 1)
+			freq = PLL2_PFD1_FREQ;
+		else if (pll_pfd_sel == 2)
+			freq = PLL2_PFD2_FREQ;
+		else if (pll_pfd_sel == 3)
+			freq = PLL2_PFD3_FREQ;
+		else if (pll_pfd_sel == 4)
+			freq = PLL2_PFD4_FREQ;
+		break;
+	case 3:
+		freq = PLL2_MAIN_FREQ;
+		break;
+	case 4:
+		pll_pfd_sel = ccm_ccsr & CCM_CCSR_PLL1_PFD_CLK_SEL_MASK;
+		pll_pfd_sel >>= CCM_CCSR_PLL1_PFD_CLK_SEL_OFFSET;
+		if (pll_pfd_sel == 0)
+			freq = PLL1_MAIN_FREQ;
+		else if (pll_pfd_sel == 1)
+			freq = PLL1_PFD1_FREQ;
+		else if (pll_pfd_sel == 2)
+			freq = PLL1_PFD2_FREQ;
+		else if (pll_pfd_sel == 3)
+			freq = PLL1_PFD3_FREQ;
+		else if (pll_pfd_sel == 4)
+			freq = PLL1_PFD4_FREQ;
+		break;
+	case 5:
+		freq = PLL3_MAIN_FREQ;
+		break;
+	default:
+		printf("unsupported system clock select\n");
+	}
+
+	return freq / armclk_div;
+}
+
+static u32 get_bus_clk(void)
+{
+	struct ccm_reg *ccm = (struct ccm_reg *)CCM_BASE_ADDR;
+	u32 ccm_cacrr, busclk_div;
+
+	ccm_cacrr = readl(&ccm->cacrr);
+
+	busclk_div = ccm_cacrr & CCM_CACRR_BUS_CLK_DIV_MASK;
+	busclk_div >>= CCM_CACRR_BUS_CLK_DIV_OFFSET;
+	busclk_div += 1;
+
+	return get_mcu_main_clk() / busclk_div;
+}
+
+static u32 get_ipg_clk(void)
+{
+	struct ccm_reg *ccm = (struct ccm_reg *)CCM_BASE_ADDR;
+	u32 ccm_cacrr, ipgclk_div;
+
+	ccm_cacrr = readl(&ccm->cacrr);
+
+	ipgclk_div = ccm_cacrr & CCM_CACRR_IPG_CLK_DIV_MASK;
+	ipgclk_div >>= CCM_CACRR_IPG_CLK_DIV_OFFSET;
+	ipgclk_div += 1;
+
+	return get_bus_clk() / ipgclk_div;
+}
+
+static u32 get_uart_clk(void)
+{
+	return get_ipg_clk();
+}
+
+static u32 get_sdhc_clk(void)
+{
+	struct ccm_reg *ccm = (struct ccm_reg *)CCM_BASE_ADDR;
+	u32 ccm_cscmr1, ccm_cscdr2, sdhc_clk_sel, sdhc_clk_div;
+	u32 freq = 0;
+
+	ccm_cscmr1 = readl(&ccm->cscmr1);
+	sdhc_clk_sel = ccm_cscmr1 & CCM_CSCMR1_ESDHC1_CLK_SEL_MASK;
+	sdhc_clk_sel >>= CCM_CSCMR1_ESDHC1_CLK_SEL_OFFSET;
+
+	ccm_cscdr2 = readl(&ccm->cscdr2);
+	sdhc_clk_div = ccm_cscdr2 & CCM_CSCDR2_ESDHC1_CLK_DIV_MASK;
+	sdhc_clk_div >>= CCM_CSCDR2_ESDHC1_CLK_DIV_OFFSET;
+	sdhc_clk_div += 1;
+
+	switch (sdhc_clk_sel) {
+	case 0:
+		freq = PLL3_MAIN_FREQ;
+		break;
+	case 1:
+		freq = PLL3_PFD3_FREQ;
+		break;
+	case 2:
+		freq = PLL1_PFD3_FREQ;
+		break;
+	case 3:
+		freq = get_bus_clk();
+		break;
+	}
+
+	return freq / sdhc_clk_div;
+}
+
+u32 get_fec_clk(void)
+{
+	struct ccm_reg *ccm = (struct ccm_reg *)CCM_BASE_ADDR;
+	u32 ccm_cscmr2, rmii_clk_sel;
+	u32 freq = 0;
+
+	ccm_cscmr2 = readl(&ccm->cscmr2);
+	rmii_clk_sel = ccm_cscmr2 & CCM_CSCMR2_RMII_CLK_SEL_MASK;
+	rmii_clk_sel >>= CCM_CSCMR2_RMII_CLK_SEL_OFFSET;
+
+	switch (rmii_clk_sel) {
+	case 0:
+		freq = ENET_EXTERNAL_CLK;
+		break;
+	case 1:
+		freq = AUDIO_EXTERNAL_CLK;
+		break;
+	case 2:
+		freq = PLL5_MAIN_FREQ;
+		break;
+	case 3:
+		freq = PLL5_MAIN_FREQ / 2;
+		break;
+	}
+
+	return freq;
+}
+
+unsigned int mxc_get_clock(enum mxc_clock clk)
+{
+	switch (clk) {
+	case MXC_ARM_CLK:
+		return get_mcu_main_clk();
+	case MXC_BUS_CLK:
+		return get_bus_clk();
+	case MXC_IPG_CLK:
+		return get_ipg_clk();
+	case MXC_UART_CLK:
+		return get_uart_clk();
+	case MXC_ESDHC_CLK:
+		return get_sdhc_clk();
+	case MXC_FEC_CLK:
+		return get_fec_clk();
+	default:
+		break;
+	}
+	return -1;
+}
+
+/* Dump some core clocks */
+int do_vf610_showclocks(cmd_tbl_t *cmdtp, int flag, int argc,
+			 char * const argv[])
+{
+	printf("\n");
+	printf("cpu clock : %8d MHz\n", mxc_get_clock(MXC_ARM_CLK) / 1000000);
+	printf("bus clock : %8d MHz\n", mxc_get_clock(MXC_BUS_CLK) / 1000000);
+	printf("ipg clock : %8d MHz\n", mxc_get_clock(MXC_IPG_CLK) / 1000000);
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	clocks, CONFIG_SYS_MAXARGS, 1, do_vf610_showclocks,
+	"display clocks",
+	""
+);
+
+#ifdef CONFIG_FEC_MXC
+void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
+{
+	struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
+	struct fuse_bank *bank = &ocotp->bank[4];
+	struct fuse_bank4_regs *fuse =
+		(struct fuse_bank4_regs *)bank->fuse_regs;
+
+	u32 value = readl(&fuse->mac_addr0);
+	mac[0] = (value >> 8);
+	mac[1] = value;
+
+	value = readl(&fuse->mac_addr1);
+	mac[2] = value >> 24;
+	mac[3] = value >> 16;
+	mac[4] = value >> 8;
+	mac[5] = value;
+}
+#endif
+
+#if defined(CONFIG_DISPLAY_CPUINFO)
+static char *get_reset_cause(void)
+{
+	u32 cause;
+	struct src *src_regs = (struct src *)SRC_BASE_ADDR;
+
+	cause = readl(&src_regs->srsr);
+	writel(cause, &src_regs->srsr);
+	cause &= 0xff;
+
+	switch (cause) {
+	case 0x08:
+		return "WDOG";
+	case 0x20:
+		return "JTAG HIGH-Z";
+	case 0x80:
+		return "EXTERNAL RESET";
+	case 0xfd:
+		return "POR";
+	default:
+		return "unknown reset";
+	}
+}
+
+int print_cpuinfo(void)
+{
+	printf("CPU:   Freescale Vybrid VF610 at %d MHz\n",
+		mxc_get_clock(MXC_ARM_CLK) / 1000000);
+	printf("Reset cause: %s\n", get_reset_cause());
+
+	return 0;
+}
+#endif
+
+int cpu_eth_init(bd_t *bis)
+{
+	int rc = -ENODEV;
+
+#if defined(CONFIG_FEC_MXC)
+	rc = fecmxc_initialize(bis);
+#endif
+
+	return rc;
+}
+
+#ifdef CONFIG_FSL_ESDHC
+int cpu_mmc_init(bd_t *bis)
+{
+	return fsl_esdhc_mmc_init(bis);
+}
+#endif
+
+int get_clocks(void)
+{
+#ifdef CONFIG_FSL_ESDHC
+	gd->arch.sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
+#endif
+	return 0;
+}
diff --git a/arch/arm/cpu/armv7/vf610/timer.c b/arch/arm/cpu/armv7/vf610/timer.c
new file mode 100644
index 0000000..f8fbed7
--- /dev/null
+++ b/arch/arm/cpu/armv7/vf610/timer.c
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <div64.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/clock.h>
+
+static struct pit_reg *cur_pit = (struct pit_reg *)PIT_BASE_ADDR;
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define TIMER_LOAD_VAL	0xffffffff
+
+static inline unsigned long long tick_to_time(unsigned long long tick)
+{
+	tick *= CONFIG_SYS_HZ;
+	do_div(tick, mxc_get_clock(MXC_IPG_CLK));
+
+	return tick;
+}
+
+static inline unsigned long long us_to_tick(unsigned long long usec)
+{
+	usec = usec * mxc_get_clock(MXC_IPG_CLK)  + 999999;
+	do_div(usec, 1000000);
+
+	return usec;
+}
+
+int timer_init(void)
+{
+	__raw_writel(0, &cur_pit->mcr);
+
+	__raw_writel(TIMER_LOAD_VAL, &cur_pit->ldval1);
+	__raw_writel(0, &cur_pit->tctrl1);
+	__raw_writel(1, &cur_pit->tctrl1);
+
+	gd->arch.tbl = 0;
+	gd->arch.tbu = 0;
+
+	return 0;
+}
+
+unsigned long long get_ticks(void)
+{
+	ulong now = TIMER_LOAD_VAL - __raw_readl(&cur_pit->cval1);
+
+	/* increment tbu if tbl has rolled over */
+	if (now < gd->arch.tbl)
+		gd->arch.tbu++;
+	gd->arch.tbl = now;
+
+	return (((unsigned long long)gd->arch.tbu) << 32) | gd->arch.tbl;
+}
+
+ulong get_timer_masked(void)
+{
+	return tick_to_time(get_ticks());
+}
+
+ulong get_timer(ulong base)
+{
+	return get_timer_masked() - base;
+}
+
+/* delay x useconds AND preserve advance timstamp value */
+void __udelay(unsigned long usec)
+{
+	unsigned long long start;
+	ulong tmo;
+
+	start = get_ticks();			/* get current timestamp */
+	tmo = us_to_tick(usec);			/* convert usecs to ticks */
+	while ((get_ticks() - start) < tmo)
+		;				/* loop till time has passed */
+}
+
+/*
+ * This function is derived from PowerPC code (timebase clock frequency).
+ * On ARM it returns the number of timer ticks per second.
+ */
+ulong get_tbclk(void)
+{
+	return mxc_get_clock(MXC_IPG_CLK);
+}