* Copyright (C) 2011
* Heiko Schocher, DENX Software Engineering, hs@denx.de.
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <nand.h>
#include <post.h>
#include <asm/arch/da850_lowlevel.h>
#include <asm/arch/hardware.h>
+#include <asm/arch/davinci_misc.h>
#include <asm/arch/ddr2_defs.h>
#include <asm/arch/emif_defs.h>
+#include <asm/arch/pll_defs.h>
+
+void davinci_enable_uart0(void)
+{
+ lpsc_on(DAVINCI_LPSC_UART0);
+
+ /* Bringup UART0 out of reset */
+ REG(UART0_PWREMU_MGMT) = 0x00006001;
+}
-void da850_waitloop(unsigned long loopcnt)
+#if defined(CONFIG_SYS_DA850_PLL_INIT)
+static void da850_waitloop(unsigned long loopcnt)
{
unsigned long i;
asm(" NOP");
}
-int da850_pll_init(struct davinci_pllc_regs *reg, unsigned long pllmult)
+static int da850_pll_init(struct davinci_pllc_regs *reg, unsigned long pllmult)
{
if (reg == davinci_pllc0_regs)
/* Unlock PLL registers. */
- clrbits_le32(&davinci_syscfg_regs->cfgchip0, 0x00000010);
+ clrbits_le32(&davinci_syscfg_regs->cfgchip0, PLL_MASTER_LOCK);
/*
* Set PLLENSRC '0',bit 5, PLL Enable(PLLEN) selection is controlled
* through MMR
*/
- clrbits_le32(®->pllctl, 0x00000020);
+ clrbits_le32(®->pllctl, PLLCTL_PLLENSRC);
/* PLLCTL.EXTCLKSRC bit 9 should be left at 0 for Freon */
- clrbits_le32(®->pllctl, 0x00000200);
+ clrbits_le32(®->pllctl, PLLCTL_EXTCLKSRC);
/* Set PLLEN=0 => PLL BYPASS MODE */
- clrbits_le32(®->pllctl, 0x00000001);
+ clrbits_le32(®->pllctl, PLLCTL_PLLEN);
da850_waitloop(150);
* Select the Clock Mode bit 8 as External Clock or On Chip
* Oscilator
*/
- dv_maskbits(®->pllctl, 0xFFFFFEFF);
- setbits_le32(®->pllctl, (CONFIG_SYS_DV_CLKMODE << 8));
+ dv_maskbits(®->pllctl, ~PLLCTL_RES_9);
+ setbits_le32(®->pllctl,
+ (CONFIG_SYS_DV_CLKMODE << PLLCTL_CLOCK_MODE_SHIFT));
}
/* Clear PLLRST bit to reset the PLL */
- clrbits_le32(®->pllctl, 0x00000008);
+ clrbits_le32(®->pllctl, PLLCTL_PLLRST);
/* Disable the PLL output */
- setbits_le32(®->pllctl, 0x00000010);
+ setbits_le32(®->pllctl, PLLCTL_PLLDIS);
/* PLL initialization sequence */
/*
* Power up the PLL- PWRDN bit set to 0 to bring the PLL out of
* power down bit
*/
- clrbits_le32(®->pllctl, 0x00000002);
+ clrbits_le32(®->pllctl, PLLCTL_PLLPWRDN);
/* Enable the PLL from Disable Mode PLLDIS bit to 0 */
- clrbits_le32(®->pllctl, 0x00000010);
+ clrbits_le32(®->pllctl, PLLCTL_PLLDIS);
+
+#if defined(CONFIG_SYS_DA850_PLL0_PREDIV)
+ /* program the prediv */
+ if (reg == davinci_pllc0_regs && CONFIG_SYS_DA850_PLL0_PREDIV)
+ writel((PLL_DIVEN | CONFIG_SYS_DA850_PLL0_PREDIV),
+ ®->prediv);
+#endif
/* Program the required multiplier value in PLLM */
writel(pllmult, ®->pllm);
/* program the postdiv */
if (reg == davinci_pllc0_regs)
- writel((0x8000 | CONFIG_SYS_DA850_PLL0_POSTDIV),
+ writel((PLL_POSTDEN | CONFIG_SYS_DA850_PLL0_POSTDIV),
®->postdiv);
else
- writel((0x8000 | CONFIG_SYS_DA850_PLL1_POSTDIV),
+ writel((PLL_POSTDEN | CONFIG_SYS_DA850_PLL1_POSTDIV),
®->postdiv);
/*
* Check for the GOSTAT bit in PLLSTAT to clear to 0 to indicate that
* no GO operation is currently in progress
*/
- while ((readl(®->pllstat) & 0x1) == 1)
+ while ((readl(®->pllstat) & PLLCMD_GOSTAT) == PLLCMD_GOSTAT)
;
if (reg == davinci_pllc0_regs) {
* Set the GOSET bit in PLLCMD to 1 to initiate a new divider
* transition.
*/
- setbits_le32(®->pllcmd, 0x01);
+ setbits_le32(®->pllcmd, PLLCMD_GOSTAT);
/*
* Wait for the GOSTAT bit in PLLSTAT to clear to 0
* (completion of phase alignment).
*/
- while ((readl(®->pllstat) & 0x1) == 1)
+ while ((readl(®->pllstat) & PLLCMD_GOSTAT) == PLLCMD_GOSTAT)
;
/* Wait for PLL to reset properly. See PLL spec for PLL reset time */
da850_waitloop(200);
/* Set the PLLRST bit in PLLCTL to 1 to bring the PLL out of reset */
- setbits_le32(®->pllctl, 0x00000008);
+ setbits_le32(®->pllctl, PLLCTL_PLLRST);
/* Wait for PLL to lock. See PLL spec for PLL lock time */
da850_waitloop(2400);
* Set the PLLEN bit in PLLCTL to 1 to remove the PLL from bypass
* mode
*/
- setbits_le32(®->pllctl, 0x00000001);
+ setbits_le32(®->pllctl, PLLCTL_PLLEN);
/*
* run off SYSCLK
*/
if (reg == davinci_pllc0_regs)
- dv_maskbits(&davinci_syscfg_regs->cfgchip3, 0xFFFFFFF8);
+ dv_maskbits(&davinci_syscfg_regs->cfgchip3,
+ ~(PLL_SCSCFG3_DIV45PENA | PLL_SCSCFG3_EMA_CLKSRC));
return 0;
}
+#endif /* CONFIG_SYS_DA850_PLL_INIT */
-int da850_ddr_setup(unsigned int freq)
+#if defined(CONFIG_SYS_DA850_DDR_INIT)
+static int da850_ddr_setup(void)
{
unsigned long tmp;
setbits_le32(&davinci_syscfg1_regs->vtpio_ctl, VTP_LOCK);
setbits_le32(&davinci_syscfg1_regs->vtpio_ctl, VTP_POWERDWN);
-
- setbits_le32(&davinci_syscfg1_regs->vtpio_ctl, VTP_IOPWRDWN);
}
-
+ setbits_le32(&davinci_syscfg1_regs->vtpio_ctl, VTP_IOPWRDWN);
writel(CONFIG_SYS_DA850_DDR2_DDRPHYCR, &dv_ddr2_regs_ctrl->ddrphycr);
- clrbits_le32(&davinci_syscfg1_regs->ddr_slew,
- (1 << DDR_SLEW_CMOSEN_BIT));
- setbits_le32(&dv_ddr2_regs_ctrl->sdbcr, DV_DDR_BOOTUNLOCK);
+ if (CONFIG_SYS_DA850_DDR2_SDBCR & (1 << DV_DDR_SDCR_DDR2EN_SHIFT)) {
+ /* DDR2 */
+ clrbits_le32(&davinci_syscfg1_regs->ddr_slew,
+ (1 << DDR_SLEW_DDR_PDENA_BIT) |
+ (1 << DDR_SLEW_CMOSEN_BIT));
+ } else {
+ /* MOBILE DDR */
+ setbits_le32(&davinci_syscfg1_regs->ddr_slew,
+ (1 << DDR_SLEW_DDR_PDENA_BIT) |
+ (1 << DDR_SLEW_CMOSEN_BIT));
+ }
- writel((CONFIG_SYS_DA850_DDR2_SDBCR & ~0xf0000000) |
- (readl(&dv_ddr2_regs_ctrl->sdbcr) & 0xf0000000), /*rsv Bytes*/
- &dv_ddr2_regs_ctrl->sdbcr);
- writel(CONFIG_SYS_DA850_DDR2_SDBCR2, &dv_ddr2_regs_ctrl->sdbcr2);
+ /*
+ * SDRAM Configuration Register (SDCR):
+ * First set the BOOTUNLOCK bit to make configuration bits
+ * writeable.
+ */
+ setbits_le32(&dv_ddr2_regs_ctrl->sdbcr, DV_DDR_BOOTUNLOCK);
+ /*
+ * Write the new value of these bits and clear BOOTUNLOCK.
+ * At the same time, set the TIMUNLOCK bit to allow changing
+ * the timing registers
+ */
+ tmp = CONFIG_SYS_DA850_DDR2_SDBCR;
+ tmp &= ~DV_DDR_BOOTUNLOCK;
+ tmp |= DV_DDR_TIMUNLOCK;
+ writel(tmp, &dv_ddr2_regs_ctrl->sdbcr);
+
+ /* write memory configuration and timing */
+ if (!(CONFIG_SYS_DA850_DDR2_SDBCR & (1 << DV_DDR_SDCR_DDR2EN_SHIFT))) {
+ /* MOBILE DDR only*/
+ writel(CONFIG_SYS_DA850_DDR2_SDBCR2,
+ &dv_ddr2_regs_ctrl->sdbcr2);
+ }
writel(CONFIG_SYS_DA850_DDR2_SDTIMR, &dv_ddr2_regs_ctrl->sdtimr);
writel(CONFIG_SYS_DA850_DDR2_SDTIMR2, &dv_ddr2_regs_ctrl->sdtimr2);
- clrbits_le32(&dv_ddr2_regs_ctrl->sdbcr,
- (1 << DV_DDR_SDCR_TIMUNLOCK_SHIFT));
+ /* clear the TIMUNLOCK bit and write the value of the CL field */
+ tmp &= ~DV_DDR_TIMUNLOCK;
+ writel(tmp, &dv_ddr2_regs_ctrl->sdbcr);
/*
* LPMODEN and MCLKSTOPEN must be set!
lpsc_on(DAVINCI_LPSC_DDR_EMIF);
/* disable self refresh */
- clrbits_le32(&dv_ddr2_regs_ctrl->sdrcr, 0xc0000000);
- writel(0x30, &dv_ddr2_regs_ctrl->pbbpr);
+ clrbits_le32(&dv_ddr2_regs_ctrl->sdrcr,
+ DV_DDR_SDRCR_LPMODEN | DV_DDR_SDRCR_MCLKSTOPEN);
+ writel(CONFIG_SYS_DA850_DDR2_PBBPR, &dv_ddr2_regs_ctrl->pbbpr);
return 0;
}
-
-void da850_pinmux_ctl(unsigned long offset, unsigned long mask,
- unsigned long value)
-{
- clrbits_le32(&davinci_syscfg_regs->pinmux[offset], mask);
- setbits_le32(&davinci_syscfg_regs->pinmux[offset], (mask & value));
-}
+#endif /* CONFIG_SYS_DA850_DDR_INIT */
__attribute__((weak))
void board_gpio_init(void)
return;
}
-#if defined(CONFIG_NAND_SPL)
-void nand_boot(void)
-{
- __attribute__((noreturn)) void (*uboot)(void);
-
- /* copy image from NOR to RAM */
- memcpy((void *)CONFIG_SYS_NAND_U_BOOT_DST,
- (void *)CONFIG_SYS_NAND_U_BOOT_OFFS,
- CONFIG_SYS_NAND_U_BOOT_SIZE);
-
- /* and jump to it ... */
- uboot = (void *)CONFIG_SYS_NAND_U_BOOT_START;
- (*uboot)();
-}
-#endif
-
-#if defined(CONFIG_NAND_SPL)
-void board_init_f(ulong bootflag)
-#else
int arch_cpu_init(void)
-#endif
{
- /*
- * copied from arch/arm/cpu/arm926ejs/start.S
- *
- * flush v4 I/D caches
- */
- asm("mov r0, #0");
- asm("mcr p15, 0, r0, c7, c7, 0"); /* flush v3/v4 cache */
- asm("mcr p15, 0, r0, c8, c7, 0"); /* flush v4 TLB */
-
- /*
- * disable MMU stuff and caches
- */
- asm("mrc p15, 0, r0, c1, c0, 0");
- /* clear bits 13, 9:8 (--V- --RS) */
- asm("bic r0, r0, #0x00002300");
- /* clear bits 7, 2:0 (B--- -CAM) */
- asm("bic r0, r0, #0x00000087");
- /* set bit 2 (A) Align */
- asm("orr r0, r0, #0x00000002");
- /* set bit 12 (I) I-Cache */
- asm("orr r0, r0, #0x00001000");
- asm("mcr p15, 0, r0, c1, c0, 0");
-
/* Unlock kick registers */
- writel(0x83e70b13, &davinci_syscfg_regs->kick0);
- writel(0x95a4f1e0, &davinci_syscfg_regs->kick1);
+ writel(DV_SYSCFG_KICK0_UNLOCK, &davinci_syscfg_regs->kick0);
+ writel(DV_SYSCFG_KICK1_UNLOCK, &davinci_syscfg_regs->kick1);
dv_maskbits(&davinci_syscfg_regs->suspsrc,
- ((1 << 27) | (1 << 22) | (1 << 20) | (1 << 5) | (1 << 16)));
-
- /* Setup Pinmux */
- da850_pinmux_ctl(0, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX0);
- da850_pinmux_ctl(1, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX1);
- da850_pinmux_ctl(2, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX2);
- da850_pinmux_ctl(3, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX3);
- da850_pinmux_ctl(4, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX4);
- da850_pinmux_ctl(5, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX5);
- da850_pinmux_ctl(6, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX6);
- da850_pinmux_ctl(7, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX7);
- da850_pinmux_ctl(8, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX8);
- da850_pinmux_ctl(9, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX9);
- da850_pinmux_ctl(10, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX10);
- da850_pinmux_ctl(11, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX11);
- da850_pinmux_ctl(12, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX12);
- da850_pinmux_ctl(13, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX13);
- da850_pinmux_ctl(14, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX14);
- da850_pinmux_ctl(15, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX15);
- da850_pinmux_ctl(16, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX16);
- da850_pinmux_ctl(17, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX17);
- da850_pinmux_ctl(18, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX18);
- da850_pinmux_ctl(19, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX19);
+ CONFIG_SYS_DA850_SYSCFG_SUSPSRC);
+ /* configure pinmux settings */
+ if (davinci_configure_pin_mux_items(pinmuxes, pinmuxes_size))
+ return 1;
+
+#if defined(CONFIG_SYS_DA850_PLL_INIT)
/* PLL setup */
da850_pll_init(davinci_pllc0_regs, CONFIG_SYS_DA850_PLL0_PLLM);
da850_pll_init(davinci_pllc1_regs, CONFIG_SYS_DA850_PLL1_PLLM);
+#endif
+ /* setup CSn config */
+#if defined(CONFIG_SYS_DA850_CS2CFG)
+ writel(CONFIG_SYS_DA850_CS2CFG, &davinci_emif_regs->ab1cr);
+#endif
+#if defined(CONFIG_SYS_DA850_CS3CFG)
+ writel(CONFIG_SYS_DA850_CS3CFG, &davinci_emif_regs->ab2cr);
+#endif
+
+ da8xx_configure_lpsc_items(lpsc, lpsc_size);
/* GPIO setup */
board_gpio_init();
- /* setup CSn config */
- writel(CONFIG_SYS_DA850_CS2CFG, &davinci_emif_regs->ab1cr);
- writel(CONFIG_SYS_DA850_CS3CFG, &davinci_emif_regs->ab2cr);
- lpsc_on(DAVINCI_LPSC_UART2);
NS16550_init((NS16550_t)(CONFIG_SYS_NS16550_COM1),
CONFIG_SYS_NS16550_CLK / 16 / CONFIG_BAUDRATE);
* Fix Power and Emulation Management Register
* see sprufw3a.pdf page 37 Table 24
*/
- writel(readl((CONFIG_SYS_NS16550_COM1 + 0x30)) | 0x00006001,
- (CONFIG_SYS_NS16550_COM1 + 0x30));
-#if defined(CONFIG_NAND_SPL)
- puts("ddr init\n");
- da850_ddr_setup(132);
+ writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
+ DAVINCI_UART_PWREMU_MGMT_UTRST),
+#if (CONFIG_SYS_NS16550_COM1 == DAVINCI_UART0_BASE)
+ &davinci_uart0_ctrl_regs->pwremu_mgmt);
+#else
+ &davinci_uart2_ctrl_regs->pwremu_mgmt);
+#endif
- puts("boot u-boot ...\n");
+#if defined(CONFIG_SYS_DA850_DDR_INIT)
+ da850_ddr_setup();
+#endif
- nand_boot();
-#else
- da850_ddr_setup(132);
return 0;
-#endif
}
projects / karo-tx-uboot.git / blobdiff