--- /dev/null
+/*
+ * Copyright (C) 2011
+ * Heiko Schocher, DENX Software Engineering, hs@denx.de.
+ *
+ * Copyright (C) 2012 Stefan Roese <sr@denx.de>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <version.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/spr_defs.h>
+#include <asm/arch/spr_misc.h>
+#include <asm/arch/spr_syscntl.h>
+
+static void ddr_clock_init(void)
+{
+ struct misc_regs *misc_p = (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
+ u32 clkenb, ddrpll;
+
+ clkenb = readl(&misc_p->periph1_clken);
+ clkenb &= ~PERIPH_MPMCMSK;
+ clkenb |= PERIPH_MPMC_WE;
+
+ /* Intentionally done twice */
+ writel(clkenb, &misc_p->periph1_clken);
+ writel(clkenb, &misc_p->periph1_clken);
+
+ ddrpll = readl(&misc_p->pll_ctr_reg);
+ ddrpll &= ~MEM_CLK_SEL_MSK;
+#if (CONFIG_DDR_HCLK)
+ ddrpll |= MEM_CLK_HCLK;
+#elif (CONFIG_DDR_2HCLK)
+ ddrpll |= MEM_CLK_2HCLK;
+#elif (CONFIG_DDR_PLL2)
+ ddrpll |= MEM_CLK_PLL2;
+#else
+#error "please define one of CONFIG_DDR_(HCLK|2HCLK|PLL2)"
+#endif
+ writel(ddrpll, &misc_p->pll_ctr_reg);
+
+ writel(readl(&misc_p->periph1_clken) | PERIPH_MPMC_EN,
+ &misc_p->periph1_clken);
+}
+
+static void mpmc_init_values(void)
+{
+ u32 i;
+ u32 *mpmc_reg_p = (u32 *)CONFIG_SPEAR_MPMCBASE;
+ u32 *mpmc_val_p = &mpmc_conf_vals[0];
+
+ for (i = 0; i < CONFIG_SPEAR_MPMCREGS; i++, mpmc_reg_p++, mpmc_val_p++)
+ writel(*mpmc_val_p, mpmc_reg_p);
+
+ mpmc_reg_p = (u32 *)CONFIG_SPEAR_MPMCBASE;
+
+ /*
+ * MPMC controller start
+ * MPMC waiting for DLLLOCKREG high
+ */
+ writel(0x01000100, &mpmc_reg_p[7]);
+
+ while (!(readl(&mpmc_reg_p[3]) & 0x10000))
+ ;
+}
+
+static void mpmc_init(void)
+{
+ /* Clock related settings for DDR */
+ ddr_clock_init();
+
+ /*
+ * DDR pad register bits are different for different SoCs
+ * Compensation values are also handled separately
+ */
+ plat_ddr_init();
+
+ /* Initialize mpmc register values */
+ mpmc_init_values();
+}
+
+static void pll_init(void)
+{
+ struct misc_regs *misc_p = (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
+
+ /* Initialize PLLs */
+ writel(FREQ_332, &misc_p->pll1_frq);
+ writel(0x1C0A, &misc_p->pll1_cntl);
+ writel(0x1C0E, &misc_p->pll1_cntl);
+ writel(0x1C06, &misc_p->pll1_cntl);
+ writel(0x1C0E, &misc_p->pll1_cntl);
+
+ writel(FREQ_332, &misc_p->pll2_frq);
+ writel(0x1C0A, &misc_p->pll2_cntl);
+ writel(0x1C0E, &misc_p->pll2_cntl);
+ writel(0x1C06, &misc_p->pll2_cntl);
+ writel(0x1C0E, &misc_p->pll2_cntl);
+
+ /* wait for pll locks */
+ while (!(readl(&misc_p->pll1_cntl) & 0x1))
+ ;
+ while (!(readl(&misc_p->pll2_cntl) & 0x1))
+ ;
+}
+
+static void mac_init(void)
+{
+ struct misc_regs *misc_p = (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
+
+ writel(readl(&misc_p->periph1_clken) & (~PERIPH_GMAC),
+ &misc_p->periph1_clken);
+
+ writel(SYNTH23, &misc_p->gmac_synth_clk);
+
+ switch (get_socrev()) {
+ case SOC_SPEAR600_AA:
+ case SOC_SPEAR600_AB:
+ case SOC_SPEAR600_BA:
+ case SOC_SPEAR600_BB:
+ case SOC_SPEAR600_BC:
+ case SOC_SPEAR600_BD:
+ writel(0x0, &misc_p->gmac_ctr_reg);
+ break;
+
+ case SOC_SPEAR300:
+ case SOC_SPEAR310:
+ case SOC_SPEAR320:
+ writel(0x4, &misc_p->gmac_ctr_reg);
+ break;
+ }
+
+ writel(readl(&misc_p->periph1_clken) | PERIPH_GMAC,
+ &misc_p->periph1_clken);
+
+ writel(readl(&misc_p->periph1_rst) | PERIPH_GMAC,
+ &misc_p->periph1_rst);
+ writel(readl(&misc_p->periph1_rst) & (~PERIPH_GMAC),
+ &misc_p->periph1_rst);
+}
+
+static void sys_init(void)
+{
+ struct misc_regs *misc_p = (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
+ struct syscntl_regs *syscntl_p =
+ (struct syscntl_regs *)CONFIG_SPEAR_SYSCNTLBASE;
+
+ /* Set system state to SLOW */
+ writel(SLOW, &syscntl_p->scctrl);
+ writel(PLL_TIM << 3, &syscntl_p->scpllctrl);
+
+ /* Initialize PLLs */
+ pll_init();
+
+ /*
+ * Ethernet configuration
+ * To be done only if the tftp boot is not selected already
+ * Boot code ensures the correct configuration in tftp booting
+ */
+ if (!tftp_boot_selected())
+ mac_init();
+
+ writel(RTC_DISABLE | PLLTIMEEN, &misc_p->periph_clk_cfg);
+ writel(0x555, &misc_p->amba_clk_cfg);
+
+ writel(NORMAL, &syscntl_p->scctrl);
+
+ /* Wait for system to switch to normal mode */
+ while (((readl(&syscntl_p->scctrl) >> MODE_SHIFT) & MODE_MASK)
+ != NORMAL)
+ ;
+}
+
+/*
+ * get_socrev
+ *
+ * Get SoC Revision.
+ * @return SOC_SPEARXXX
+ */
+int get_socrev(void)
+{
+#if defined(CONFIG_SPEAR600)
+ struct misc_regs *misc_p = (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
+ u32 soc_id = readl(&misc_p->soc_core_id);
+ u32 pri_socid = (soc_id >> SOC_PRI_SHFT) & 0xFF;
+ u32 sec_socid = (soc_id >> SOC_SEC_SHFT) & 0xFF;
+
+ if ((pri_socid == 'B') && (sec_socid == 'B'))
+ return SOC_SPEAR600_BB;
+ else if ((pri_socid == 'B') && (sec_socid == 'C'))
+ return SOC_SPEAR600_BC;
+ else if ((pri_socid == 'B') && (sec_socid == 'D'))
+ return SOC_SPEAR600_BD;
+ else if (soc_id == 0)
+ return SOC_SPEAR600_BA;
+ else
+ return SOC_SPEAR_NA;
+#elif defined(CONFIG_SPEAR300)
+ return SOC_SPEAR300;
+#elif defined(CONFIG_SPEAR310)
+ return SOC_SPEAR310;
+#elif defined(CONFIG_SPEAR320)
+ return SOC_SPEAR320;
+#endif
+}
+
+void lowlevel_init(void)
+{
+ struct misc_regs *misc_p = (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
+ const char *u_boot_rev = U_BOOT_VERSION;
+
+ /* Initialize PLLs */
+ sys_init();
+
+ /* Initialize UART */
+ serial_init();
+
+ /* Print U-Boot SPL version string */
+ serial_puts("\nU-Boot SPL ");
+ /* Avoid a second "U-Boot" coming from this string */
+ u_boot_rev = &u_boot_rev[7];
+ serial_puts(u_boot_rev);
+ serial_puts(" (");
+ serial_puts(U_BOOT_DATE);
+ serial_puts(" - ");
+ serial_puts(U_BOOT_TIME);
+ serial_puts(")\n");
+
+#if defined(CONFIG_OS_BOOT)
+ writel(readl(&misc_p->periph1_clken) | PERIPH_UART1,
+ &misc_p->periph1_clken);
+#endif
+
+ /* Enable IPs (release reset) */
+ writel(PERIPH_RST_ALL, &misc_p->periph1_rst);
+
+ /* Initialize MPMC */
+ serial_puts("Configure DDR\n");
+ mpmc_init();
+
+ /* SoC specific initialization */
+ soc_init();
+}
+
+void spear_late_init(void)
+{
+ struct misc_regs *misc_p = (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
+
+ writel(0x80000007, &misc_p->arb_icm_ml1);
+ writel(0x80000007, &misc_p->arb_icm_ml2);
+ writel(0x80000007, &misc_p->arb_icm_ml3);
+ writel(0x80000007, &misc_p->arb_icm_ml4);
+ writel(0x80000007, &misc_p->arb_icm_ml5);
+ writel(0x80000007, &misc_p->arb_icm_ml6);
+ writel(0x80000007, &misc_p->arb_icm_ml7);
+ writel(0x80000007, &misc_p->arb_icm_ml8);
+ writel(0x80000007, &misc_p->arb_icm_ml9);
+}
Code Review / kvmfornfv.git / blobdiff