--- /dev/null
+/*
+ * (C) Copyright 2000-2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <watchdog.h>
+
+#include <mpc8xx.h>
+#include <commproc.h>
+
+#if defined(CONFIG_SYS_RTCSC) || defined(CONFIG_SYS_RMDS)
+DECLARE_GLOBAL_DATA_PTR;
+#endif
+
+#if defined(CONFIG_SYS_I2C_UCODE_PATCH) || defined(CONFIG_SYS_SPI_UCODE_PATCH) || \
+ defined(CONFIG_SYS_SMC_UCODE_PATCH)
+void cpm_load_patch (volatile immap_t * immr);
+#endif
+
+/*
+ * Breath some life into the CPU...
+ *
+ * Set up the memory map,
+ * initialize a bunch of registers,
+ * initialize the UPM's
+ */
+void cpu_init_f (volatile immap_t * immr)
+{
+ volatile memctl8xx_t *memctl = &immr->im_memctl;
+# ifdef CONFIG_SYS_PLPRCR
+ ulong mfmask;
+# endif
+ ulong reg;
+
+ /* SYPCR - contains watchdog control (11-9) */
+
+ immr->im_siu_conf.sc_sypcr = CONFIG_SYS_SYPCR;
+
+#if defined(CONFIG_WATCHDOG)
+ reset_8xx_watchdog (immr);
+#endif /* CONFIG_WATCHDOG */
+
+ /* SIUMCR - contains debug pin configuration (11-6) */
+#ifndef CONFIG_SVM_SC8xx
+ immr->im_siu_conf.sc_siumcr |= CONFIG_SYS_SIUMCR;
+#else
+ immr->im_siu_conf.sc_siumcr = CONFIG_SYS_SIUMCR;
+#endif
+ /* initialize timebase status and control register (11-26) */
+ /* unlock TBSCRK */
+
+ immr->im_sitk.sitk_tbscrk = KAPWR_KEY;
+ immr->im_sit.sit_tbscr = CONFIG_SYS_TBSCR;
+
+ /* initialize the PIT (11-31) */
+
+ immr->im_sitk.sitk_piscrk = KAPWR_KEY;
+ immr->im_sit.sit_piscr = CONFIG_SYS_PISCR;
+
+ /* System integration timers. Don't change EBDF! (15-27) */
+
+ immr->im_clkrstk.cark_sccrk = KAPWR_KEY;
+ reg = immr->im_clkrst.car_sccr;
+ reg &= SCCR_MASK;
+ reg |= CONFIG_SYS_SCCR;
+ immr->im_clkrst.car_sccr = reg;
+
+ /* PLL (CPU clock) settings (15-30) */
+
+ immr->im_clkrstk.cark_plprcrk = KAPWR_KEY;
+
+ /* If CONFIG_SYS_PLPRCR (set in the various *_config.h files) tries to
+ * set the MF field, then just copy CONFIG_SYS_PLPRCR over car_plprcr,
+ * otherwise OR in CONFIG_SYS_PLPRCR so we do not change the current MF
+ * field value.
+ *
+ * For newer (starting MPC866) chips PLPRCR layout is different.
+ */
+#ifdef CONFIG_SYS_PLPRCR
+ if (get_immr(0xFFFF) >= MPC8xx_NEW_CLK)
+ mfmask = PLPRCR_MFACT_MSK;
+ else
+ mfmask = PLPRCR_MF_MSK;
+
+ if ((CONFIG_SYS_PLPRCR & mfmask) != 0)
+ reg = CONFIG_SYS_PLPRCR; /* reset control bits */
+ else {
+ reg = immr->im_clkrst.car_plprcr;
+ reg &= mfmask; /* isolate MF-related fields */
+ reg |= CONFIG_SYS_PLPRCR; /* reset control bits */
+ }
+ immr->im_clkrst.car_plprcr = reg;
+#endif
+
+ /*
+ * Memory Controller:
+ */
+
+ /* perform BR0 reset that MPC850 Rev. A can't guarantee */
+ reg = memctl->memc_br0;
+ reg &= BR_PS_MSK; /* Clear everything except Port Size bits */
+ reg |= BR_V; /* then add just the "Bank Valid" bit */
+ memctl->memc_br0 = reg;
+
+ /* Map banks 0 (and maybe 1) to the FLASH banks 0 (and 1) at
+ * preliminary addresses - these have to be modified later
+ * when FLASH size has been determined
+ *
+ * Depending on the size of the memory region defined by
+ * CONFIG_SYS_OR0_REMAP some boards (wide address mask) allow to map the
+ * CONFIG_SYS_MONITOR_BASE, while others (narrower address mask) can't
+ * map CONFIG_SYS_MONITOR_BASE.
+ *
+ * For example, for CONFIG_IVMS8, the CONFIG_SYS_MONITOR_BASE is
+ * 0xff000000, but CONFIG_SYS_OR0_REMAP's address mask is 0xfff80000.
+ *
+ * If BR0 wasn't loaded with address base 0xff000000, then BR0's
+ * base address remains as 0x00000000. However, the address mask
+ * have been narrowed to 512Kb, so CONFIG_SYS_MONITOR_BASE wasn't mapped
+ * into the Bank0.
+ *
+ * This is why CONFIG_IVMS8 and similar boards must load BR0 with
+ * CONFIG_SYS_BR0_PRELIM in advance.
+ *
+ * [Thanks to Michael Liao for this explanation.
+ * I owe him a free beer. - wd]
+ */
+
+#if defined(CONFIG_HERMES) || \
+ defined(CONFIG_ICU862) || \
+ defined(CONFIG_IP860) || \
+ defined(CONFIG_IVML24) || \
+ defined(CONFIG_IVMS8) || \
+ defined(CONFIG_LWMON) || \
+ defined(CONFIG_MHPC) || \
+ defined(CONFIG_R360MPI) || \
+ defined(CONFIG_RMU) || \
+ defined(CONFIG_RPXLITE) || \
+ defined(CONFIG_SPC1920) || \
+ defined(CONFIG_SPD823TS)
+
+ memctl->memc_br0 = CONFIG_SYS_BR0_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_OR0_REMAP)
+ memctl->memc_or0 = CONFIG_SYS_OR0_REMAP;
+#endif
+#if defined(CONFIG_SYS_OR1_REMAP)
+ memctl->memc_or1 = CONFIG_SYS_OR1_REMAP;
+#endif
+#if defined(CONFIG_SYS_OR5_REMAP)
+ memctl->memc_or5 = CONFIG_SYS_OR5_REMAP;
+#endif
+
+ /* now restrict to preliminary range */
+ memctl->memc_br0 = CONFIG_SYS_BR0_PRELIM;
+ memctl->memc_or0 = CONFIG_SYS_OR0_PRELIM;
+
+#if (defined(CONFIG_SYS_OR1_PRELIM) && defined(CONFIG_SYS_BR1_PRELIM))
+ memctl->memc_or1 = CONFIG_SYS_OR1_PRELIM;
+ memctl->memc_br1 = CONFIG_SYS_BR1_PRELIM;
+#endif
+
+#if defined(CONFIG_IP860) /* disable CS0 now that Flash is mapped on CS1 */
+ memctl->memc_br0 = 0;
+#endif
+
+#if defined(CONFIG_SYS_OR2_PRELIM) && defined(CONFIG_SYS_BR2_PRELIM)
+ memctl->memc_or2 = CONFIG_SYS_OR2_PRELIM;
+ memctl->memc_br2 = CONFIG_SYS_BR2_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_OR3_PRELIM) && defined(CONFIG_SYS_BR3_PRELIM)
+ memctl->memc_or3 = CONFIG_SYS_OR3_PRELIM;
+ memctl->memc_br3 = CONFIG_SYS_BR3_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_OR4_PRELIM) && defined(CONFIG_SYS_BR4_PRELIM)
+ memctl->memc_or4 = CONFIG_SYS_OR4_PRELIM;
+ memctl->memc_br4 = CONFIG_SYS_BR4_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_OR5_PRELIM) && defined(CONFIG_SYS_BR5_PRELIM)
+ memctl->memc_or5 = CONFIG_SYS_OR5_PRELIM;
+ memctl->memc_br5 = CONFIG_SYS_BR5_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_OR6_PRELIM) && defined(CONFIG_SYS_BR6_PRELIM)
+ memctl->memc_or6 = CONFIG_SYS_OR6_PRELIM;
+ memctl->memc_br6 = CONFIG_SYS_BR6_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_OR7_PRELIM) && defined(CONFIG_SYS_BR7_PRELIM)
+ memctl->memc_or7 = CONFIG_SYS_OR7_PRELIM;
+ memctl->memc_br7 = CONFIG_SYS_BR7_PRELIM;
+#endif
+
+ /*
+ * Reset CPM
+ */
+ immr->im_cpm.cp_cpcr = CPM_CR_RST | CPM_CR_FLG;
+ do { /* Spin until command processed */
+ __asm__ ("eieio");
+ } while (immr->im_cpm.cp_cpcr & CPM_CR_FLG);
+
+#if defined(CONFIG_RPXLITE) && defined(CONFIG_ENV_IS_IN_NVRAM)
+ rpxlite_init ();
+#endif
+
+#ifdef CONFIG_SYS_RCCR /* must be done before cpm_load_patch() */
+ /* write config value */
+ immr->im_cpm.cp_rccr = CONFIG_SYS_RCCR;
+#endif
+
+#if defined(CONFIG_SYS_I2C_UCODE_PATCH) || defined(CONFIG_SYS_SPI_UCODE_PATCH) || \
+ defined(CONFIG_SYS_SMC_UCODE_PATCH)
+ cpm_load_patch (immr); /* load mpc8xx microcode patch */
+#endif
+}
+
+/*
+ * initialize higher level parts of CPU like timers
+ */
+int cpu_init_r (void)
+{
+#if defined(CONFIG_SYS_RTCSC) || defined(CONFIG_SYS_RMDS)
+ bd_t *bd = gd->bd;
+ volatile immap_t *immr = (volatile immap_t *) (bd->bi_immr_base);
+#endif
+
+#ifdef CONFIG_SYS_RTCSC
+ /* Unlock RTSC register */
+ immr->im_sitk.sitk_rtcsck = KAPWR_KEY;
+ /* write config value */
+ immr->im_sit.sit_rtcsc = CONFIG_SYS_RTCSC;
+#endif
+
+#ifdef CONFIG_SYS_RMDS
+ /* write config value */
+ immr->im_cpm.cp_rmds = CONFIG_SYS_RMDS;
+#endif
+ return (0);
+}
Code Review / kvmfornfv.git / blobdiff