Add Broadcom / Netgear changes from RAXE 1.0.0.48

[project/bcm63xx/u-boot.git] / arch / arm / mach-bcmbca / bcm6756 / cpu.c

diff --git a/arch/arm/mach-bcmbca/bcm6756/cpu.c b/arch/arm/mach-bcmbca/bcm6756/cpu.c
new file mode 100644 (file)
index 0000000..b60aac7
--- /dev/null
+++ b/arch/arm/mach-bcmbca/bcm6756/cpu.c
@@ -0,0 +1,161 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2019 Broadcom Ltd.
+ */
+
+#include <common.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/ddr.h>
+#include <asm/arch/ubus4.h>
+#include <spl.h>
+#if defined(CONFIG_BCMBCA_PMC)
+#include "pmc_drv.h"
+#include "asm/arch/BPCM.h"
+#endif
+
+#if defined(CONFIG_TPL_BUILD)
+static void enable_ns_access(void)
+{
+       BIUCFG->bac.bac_permission |= 0x33;     // Linux access to BAC_CPU_THERM_TEMP
+}
+
+/*this function is used to turn on CCI from secure mode 
+*  *   it also turns snooping enable for S5 CPU interface*/
+static void cci500_enable(void)
+{
+       /*Enable access from E2 and below */
+       CCI500->secr_acc |= SECURE_ACCESS_UNSECURE_ENABLE;
+}
+#endif
+
+#if !defined(CONFIG_SPL_BUILD)
+void print_chipinfo(void)
+{
+       unsigned int chipId = (PERF->RevID & CHIP_ID_MASK) >> CHIP_ID_SHIFT;
+       unsigned int revId = PERF->RevID & REV_ID_MASK;
+
+       printf("Chip ID: BCM%X_%X\n",chipId,revId);
+}
+#endif
+
+#if defined(CONFIG_BCMBCA_PMC)
+
+void boost_cpu_clock(void)
+{
+       printf("set cpu freq to 1700MHz\n");
+       set_cpu_freq(1700);
+       pll_ch_freq_set(PMB_ADDR_BIU_PLL, 1, 3000/600); // raise ACEBIU clock rate to 600 MHz
+}
+
+int set_cpu_freq(int freqMHz)
+{
+       int mdiv;
+
+       if( freqMHz > 1700 || freqMHz < 485 )
+       {
+               printf("%dMHz is not supported\n", freqMHz);
+               return -1;
+       }
+
+       /* VCO at 3.4GHz, mdiv = Fvco/target frequency */
+       mdiv = 3400/freqMHz;
+
+       pll_ch_freq_set(PMB_ADDR_BIU_PLL, 0, mdiv);
+
+       return 3400/mdiv;       
+}
+#endif
+
+int bcmbca_get_boot_device(void)
+{
+       if ((MISC->miscStrapBus&MISC_STRAP_BUS_BOOT_SEL_NAND_MASK) == MISC_STRAP_BUS_BOOT_NAND)
+               return BOOT_DEVICE_NAND;
+
+       if ((MISC->miscStrapBus&MISC_STRAP_BUS_BOOT_SEL_MASK) == MISC_STRAP_BUS_BOOT_SPI_NAND)
+               return BOOT_DEVICE_SPI;
+
+       if ((MISC->miscStrapBus&MISC_STRAP_BUS_BOOT_SEL_MASK) == MISC_STRAP_BUS_BOOT_EMMC)
+               return BOOT_DEVICE_MMC1;
+
+       printf("Error: boot_sel straps are not set correctly\n");
+
+       return BOOT_DEVICE_NONE;
+}
+
+int arch_cpu_init(void)
+{
+#if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD)
+
+       u32 frq = COUNTER_FREQUENCY;
+
+       spl_ddrinit_prepare();
+
+       /* set arch timer frequency */
+       asm volatile("mcr p15, 0, %0, c14, c0, 0" : : "r" (frq));
+       /* enable system timer */
+       BIUCFG->TSO_CNTCR |= 1;
+
+       /* enable unalgined access */
+       set_cr(get_cr() & ~CR_A);       
+#endif
+
+#if defined(CONFIG_TPL_BUILD)
+       enable_ns_access();
+       cci500_enable();
+#endif
+
+
+    return 0;
+}
+
+void arch_cpu_deinit()
+{
+}
+
+int get_nr_cpus()
+{
+       uint32_t nr_cpus;
+
+       if (bcm_otp_get_nr_cpus(&nr_cpus)) {
+               printf("Error: failed to read cpu core from OTP\n");
+               nr_cpus = 4;
+       } else {
+               if (nr_cpus >= 0 && nr_cpus <= 4)
+                       nr_cpus = 4;
+               else
+                       nr_cpus = 8 - nr_cpus;
+       }
+
+       return nr_cpus;
+}
+
+#if !defined(CONFIG_TPL_ATF)
+void boot_secondary_cpu(unsigned long vector)
+{
+       uint32_t cpu = 1; 
+       uint32_t nr_cpus = get_nr_cpus();
+       ARM_CONTROL_REG ctrl_reg;
+
+       printf("boot secondary cpu from 0x%lx\n", vector);
+
+       *(volatile uint32_t*)(BOOTLUT_BASE+0x20) = vector;
+       
+       while (cpu < nr_cpus) {
+               int stat;
+
+               stat = PowerOnDevice(PMB_ADDR_ORION_CPU0 + cpu);
+               if (stat != kPMC_NO_ERROR)
+                       printf("failed to power on secondary cpu %d - sts %d\n", cpu, stat);
+               
+               stat = ReadBPCMRegister(PMB_ADDR_BIU_BPCM, ARMBPCMRegOffset(arm_control), &ctrl_reg.Reg32);
+               ctrl_reg.Bits.cpu_reset_n &= ~(0x1 << cpu);
+               stat |= WriteBPCMRegister(PMB_ADDR_BIU_BPCM, ARMBPCMRegOffset(arm_control), ctrl_reg.Reg32);
+               if (stat != kPMC_NO_ERROR)
+                       printf("failed to boot secondary cpu %d - sts %d\n", cpu, stat);
+               
+               cpu++;
+       }
+
+       return;
+}
+#endif