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Diffstat (limited to 'arch/arm/cpu/tegra20-common/warmboot_avp.c')
-rw-r--r--arch/arm/cpu/tegra20-common/warmboot_avp.c236
1 files changed, 0 insertions, 236 deletions
diff --git a/arch/arm/cpu/tegra20-common/warmboot_avp.c b/arch/arm/cpu/tegra20-common/warmboot_avp.c
deleted file mode 100644
index 27ce5f4..0000000
--- a/arch/arm/cpu/tegra20-common/warmboot_avp.c
+++ /dev/null
@@ -1,236 +0,0 @@
-/*
- * (C) Copyright 2010 - 2011
- * NVIDIA Corporation <www.nvidia.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/arch/clock.h>
-#include <asm/arch/flow.h>
-#include <asm/arch/pinmux.h>
-#include <asm/arch/tegra.h>
-#include <asm/arch-tegra/ap.h>
-#include <asm/arch-tegra/apb_misc.h>
-#include <asm/arch-tegra/clk_rst.h>
-#include <asm/arch-tegra/pmc.h>
-#include <asm/arch-tegra/warmboot.h>
-#include "warmboot_avp.h"
-
-#define DEBUG_RESET_CORESIGHT
-
-void wb_start(void)
-{
- struct apb_misc_pp_ctlr *apb_misc =
- (struct apb_misc_pp_ctlr *)NV_PA_APB_MISC_BASE;
- struct pmc_ctlr *pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE;
- struct flow_ctlr *flow = (struct flow_ctlr *)NV_PA_FLOW_BASE;
- struct clk_rst_ctlr *clkrst =
- (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
- union osc_ctrl_reg osc_ctrl;
- union pllx_base_reg pllx_base;
- union pllx_misc_reg pllx_misc;
- union scratch3_reg scratch3;
- u32 reg;
-
- /* enable JTAG & TBE */
- writel(CONFIG_CTL_TBE | CONFIG_CTL_JTAG, &apb_misc->cfg_ctl);
-
- /* Are we running where we're supposed to be? */
- asm volatile (
- "adr %0, wb_start;" /* reg: wb_start address */
- : "=r"(reg) /* output */
- /* no input, no clobber list */
- );
-
- if (reg != NV_WB_RUN_ADDRESS)
- goto do_reset;
-
- /* Are we running with AVP? */
- if (readl(NV_PA_PG_UP_BASE + PG_UP_TAG_0) != PG_UP_TAG_AVP)
- goto do_reset;
-
-#ifdef DEBUG_RESET_CORESIGHT
- /* Assert CoreSight reset */
- reg = readl(&clkrst->crc_rst_dev[TEGRA_DEV_U]);
- reg |= SWR_CSITE_RST;
- writel(reg, &clkrst->crc_rst_dev[TEGRA_DEV_U]);
-#endif
-
- /* TODO: Set the drive strength - maybe make this a board parameter? */
- osc_ctrl.word = readl(&clkrst->crc_osc_ctrl);
- osc_ctrl.xofs = 4;
- osc_ctrl.xoe = 1;
- writel(osc_ctrl.word, &clkrst->crc_osc_ctrl);
-
- /* Power up the CPU complex if necessary */
- if (!(readl(&pmc->pmc_pwrgate_status) & PWRGATE_STATUS_CPU)) {
- reg = PWRGATE_TOGGLE_PARTID_CPU | PWRGATE_TOGGLE_START;
- writel(reg, &pmc->pmc_pwrgate_toggle);
- while (!(readl(&pmc->pmc_pwrgate_status) & PWRGATE_STATUS_CPU))
- ;
- }
-
- /* Remove the I/O clamps from the CPU power partition. */
- reg = readl(&pmc->pmc_remove_clamping);
- reg |= CPU_CLMP;
- writel(reg, &pmc->pmc_remove_clamping);
-
- reg = EVENT_ZERO_VAL_20 | EVENT_MSEC | EVENT_MODE_STOP;
- writel(reg, &flow->halt_cop_events);
-
- /* Assert CPU complex reset */
- reg = readl(&clkrst->crc_rst_dev[TEGRA_DEV_L]);
- reg |= CPU_RST;
- writel(reg, &clkrst->crc_rst_dev[TEGRA_DEV_L]);
-
- /* Hold both CPUs in reset */
- reg = CPU_CMPLX_CPURESET0 | CPU_CMPLX_CPURESET1 | CPU_CMPLX_DERESET0 |
- CPU_CMPLX_DERESET1 | CPU_CMPLX_DBGRESET0 | CPU_CMPLX_DBGRESET1;
- writel(reg, &clkrst->crc_cpu_cmplx_set);
-
- /* Halt CPU1 at the flow controller for uni-processor configurations */
- writel(EVENT_MODE_STOP, &flow->halt_cpu1_events);
-
- /*
- * Set the CPU reset vector. SCRATCH41 contains the physical
- * address of the CPU-side restoration code.
- */
- reg = readl(&pmc->pmc_scratch41);
- writel(reg, EXCEP_VECTOR_CPU_RESET_VECTOR);
-
- /* Select CPU complex clock source */
- writel(CCLK_PLLP_BURST_POLICY, &clkrst->crc_cclk_brst_pol);
-
- /* Start the CPU0 clock and stop the CPU1 clock */
- reg = CPU_CMPLX_CPU_BRIDGE_CLKDIV_4 | CPU_CMPLX_CPU0_CLK_STP_RUN |
- CPU_CMPLX_CPU1_CLK_STP_STOP;
- writel(reg, &clkrst->crc_clk_cpu_cmplx);
-
- /* Enable the CPU complex clock */
- reg = readl(&clkrst->crc_clk_out_enb[TEGRA_DEV_L]);
- reg |= CLK_ENB_CPU;
- writel(reg, &clkrst->crc_clk_out_enb[TEGRA_DEV_L]);
-
- /* Make sure the resets were held for at least 2 microseconds */
- reg = readl(TIMER_USEC_CNTR);
- while (readl(TIMER_USEC_CNTR) <= (reg + 2))
- ;
-
-#ifdef DEBUG_RESET_CORESIGHT
- /*
- * De-assert CoreSight reset.
- * NOTE: We're leaving the CoreSight clock on the oscillator for
- * now. It will be restored to its original clock source
- * when the CPU-side restoration code runs.
- */
- reg = readl(&clkrst->crc_rst_dev[TEGRA_DEV_U]);
- reg &= ~SWR_CSITE_RST;
- writel(reg, &clkrst->crc_rst_dev[TEGRA_DEV_U]);
-#endif
-
- /* Unlock the CPU CoreSight interfaces */
- reg = 0xC5ACCE55;
- writel(reg, CSITE_CPU_DBG0_LAR);
- writel(reg, CSITE_CPU_DBG1_LAR);
-
- /*
- * Sample the microsecond timestamp again. This is the time we must
- * use when returning from LP0 for PLL stabilization delays.
- */
- reg = readl(TIMER_USEC_CNTR);
- writel(reg, &pmc->pmc_scratch1);
-
- pllx_base.word = 0;
- pllx_misc.word = 0;
- scratch3.word = readl(&pmc->pmc_scratch3);
-
- /* Get the OSC. For 19.2 MHz, use 19 to make the calculations easier */
- reg = (readl(TIMER_USEC_CFG) & USEC_CFG_DIVISOR_MASK) + 1;
-
- /*
- * According to the TRM, for 19.2MHz OSC, the USEC_DIVISOR is 0x5f, and
- * USEC_DIVIDEND is 0x04. So, if USEC_DIVISOR > 26, OSC is 19.2 MHz.
- *
- * reg is used to calculate the pllx freq, which is used to determine if
- * to set dccon or not.
- */
- if (reg > 26)
- reg = 19;
-
- /* PLLX_BASE.PLLX_DIVM */
- if (scratch3.pllx_base_divm == reg)
- reg = 0;
- else
- reg = 1;
-
- /* PLLX_BASE.PLLX_DIVN */
- pllx_base.divn = scratch3.pllx_base_divn;
- reg = scratch3.pllx_base_divn << reg;
-
- /* PLLX_BASE.PLLX_DIVP */
- pllx_base.divp = scratch3.pllx_base_divp;
- reg = reg >> scratch3.pllx_base_divp;
-
- pllx_base.bypass = 1;
-
- /* PLLX_MISC_DCCON must be set for pllx frequency > 600 MHz. */
- if (reg > 600)
- pllx_misc.dccon = 1;
-
- /* PLLX_MISC_LFCON */
- pllx_misc.lfcon = scratch3.pllx_misc_lfcon;
-
- /* PLLX_MISC_CPCON */
- pllx_misc.cpcon = scratch3.pllx_misc_cpcon;
-
- writel(pllx_misc.word, &clkrst->crc_pll_simple[SIMPLE_PLLX].pll_misc);
- writel(pllx_base.word, &clkrst->crc_pll_simple[SIMPLE_PLLX].pll_base);
-
- pllx_base.enable = 1;
- writel(pllx_base.word, &clkrst->crc_pll_simple[SIMPLE_PLLX].pll_base);
- pllx_base.bypass = 0;
- writel(pllx_base.word, &clkrst->crc_pll_simple[SIMPLE_PLLX].pll_base);
-
- writel(0, flow->halt_cpu_events);
-
- reg = CPU_CMPLX_CPURESET0 | CPU_CMPLX_DBGRESET0 | CPU_CMPLX_DERESET0;
- writel(reg, &clkrst->crc_cpu_cmplx_clr);
-
- reg = PLLM_OUT1_RSTN_RESET_DISABLE | PLLM_OUT1_CLKEN_ENABLE |
- PLLM_OUT1_RATIO_VAL_8;
- writel(reg, &clkrst->crc_pll[CLOCK_ID_MEMORY].pll_out[0]);
-
- reg = SCLK_SWAKE_FIQ_SRC_PLLM_OUT1 | SCLK_SWAKE_IRQ_SRC_PLLM_OUT1 |
- SCLK_SWAKE_RUN_SRC_PLLM_OUT1 | SCLK_SWAKE_IDLE_SRC_PLLM_OUT1 |
- SCLK_SYS_STATE_IDLE;
- writel(reg, &clkrst->crc_sclk_brst_pol);
-
- /* avp_resume: no return after the write */
- reg = readl(&clkrst->crc_rst_dev[TEGRA_DEV_L]);
- reg &= ~CPU_RST;
- writel(reg, &clkrst->crc_rst_dev[TEGRA_DEV_L]);
-
- /* avp_halt: */
-avp_halt:
- reg = EVENT_MODE_STOP | EVENT_JTAG;
- writel(reg, flow->halt_cop_events);
- goto avp_halt;
-
-do_reset:
- /*
- * Execution comes here if something goes wrong. The chip is reset and
- * a cold boot is performed.
- */
- writel(SWR_TRIG_SYS_RST, &clkrst->crc_rst_dev[TEGRA_DEV_L]);
- goto do_reset;
-}
-
-/*
- * wb_end() is a dummy function, and must be directly following wb_start(),
- * and is used to calculate the size of wb_start().
- */
-void wb_end(void)
-{
-}