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xemu/hw/misc/imx6ul_ccm.c
Jean-Christophe Dubois 3d26d7d690 hw/misc/imx6ul_ccm: Implement non writable bits in CCM registers 
Some bits of the CCM registers are non writable.

This was left undone in the initial commit (all bits of registers were
writable).

This patch adds the required code to protect the non writable bits.

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Message-id: 20200608133508.550046-1-jcd@tribudubois.net
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-06-16 10:32:28 +01:00

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/*
* IMX6UL Clock Control Module
*
* Copyright (c) 2018 Jean-Christophe Dubois <jcd@tribudubois.net>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
* To get the timer frequencies right, we need to emulate at least part of
* the CCM.
*/
#include "qemu/osdep.h"
#include "hw/registerfields.h"
#include "migration/vmstate.h"
#include "hw/misc/imx6ul_ccm.h"
#include "qemu/log.h"
#include "qemu/module.h"
#include "trace.h"
static const uint32_t ccm_mask[CCM_MAX] = {
[CCM_CCR] = 0xf01fef80,
[CCM_CCDR] = 0xfffeffff,
[CCM_CSR] = 0xffffffff,
[CCM_CCSR] = 0xfffffef2,
[CCM_CACRR] = 0xfffffff8,
[CCM_CBCDR] = 0xc1f8e000,
[CCM_CBCMR] = 0xfc03cfff,
[CCM_CSCMR1] = 0x80700000,
[CCM_CSCMR2] = 0xe01ff003,
[CCM_CSCDR1] = 0xfe00c780,
[CCM_CS1CDR] = 0xfe00fe00,
[CCM_CS2CDR] = 0xf8007000,
[CCM_CDCDR] = 0xf00fffff,
[CCM_CHSCCDR] = 0xfffc01ff,
[CCM_CSCDR2] = 0xfe0001ff,
[CCM_CSCDR3] = 0xffffc1ff,
[CCM_CDHIPR] = 0xffffffff,
[CCM_CTOR] = 0x00000000,
[CCM_CLPCR] = 0xf39ff01c,
[CCM_CISR] = 0xfb85ffbe,
[CCM_CIMR] = 0xfb85ffbf,
[CCM_CCOSR] = 0xfe00fe00,
[CCM_CGPR] = 0xfffc3fea,
[CCM_CCGR0] = 0x00000000,
[CCM_CCGR1] = 0x00000000,
[CCM_CCGR2] = 0x00000000,
[CCM_CCGR3] = 0x00000000,
[CCM_CCGR4] = 0x00000000,
[CCM_CCGR5] = 0x00000000,
[CCM_CCGR6] = 0x00000000,
[CCM_CMEOR] = 0xafffff1f,
};
static const uint32_t analog_mask[CCM_ANALOG_MAX] = {
[CCM_ANALOG_PLL_ARM] = 0xfff60f80,
[CCM_ANALOG_PLL_USB1] = 0xfffe0fbc,
[CCM_ANALOG_PLL_USB2] = 0xfffe0fbc,
[CCM_ANALOG_PLL_SYS] = 0xfffa0ffe,
[CCM_ANALOG_PLL_SYS_SS] = 0x00000000,
[CCM_ANALOG_PLL_SYS_NUM] = 0xc0000000,
[CCM_ANALOG_PLL_SYS_DENOM] = 0xc0000000,
[CCM_ANALOG_PLL_AUDIO] = 0xffe20f80,
[CCM_ANALOG_PLL_AUDIO_NUM] = 0xc0000000,
[CCM_ANALOG_PLL_AUDIO_DENOM] = 0xc0000000,
[CCM_ANALOG_PLL_VIDEO] = 0xffe20f80,
[CCM_ANALOG_PLL_VIDEO_NUM] = 0xc0000000,
[CCM_ANALOG_PLL_VIDEO_DENOM] = 0xc0000000,
[CCM_ANALOG_PLL_ENET] = 0xffc20ff0,
[CCM_ANALOG_PFD_480] = 0x40404040,
[CCM_ANALOG_PFD_528] = 0x40404040,
[PMU_MISC0] = 0x01fe8306,
[PMU_MISC1] = 0x07fcede0,
[PMU_MISC2] = 0x005f5f5f,
};
static const char *imx6ul_ccm_reg_name(uint32_t reg)
{
static char unknown[20];
switch (reg) {
case CCM_CCR:
return "CCR";
case CCM_CCDR:
return "CCDR";
case CCM_CSR:
return "CSR";
case CCM_CCSR:
return "CCSR";
case CCM_CACRR:
return "CACRR";
case CCM_CBCDR:
return "CBCDR";
case CCM_CBCMR:
return "CBCMR";
case CCM_CSCMR1:
return "CSCMR1";
case CCM_CSCMR2:
return "CSCMR2";
case CCM_CSCDR1:
return "CSCDR1";
case CCM_CS1CDR:
return "CS1CDR";
case CCM_CS2CDR:
return "CS2CDR";
case CCM_CDCDR:
return "CDCDR";
case CCM_CHSCCDR:
return "CHSCCDR";
case CCM_CSCDR2:
return "CSCDR2";
case CCM_CSCDR3:
return "CSCDR3";
case CCM_CDHIPR:
return "CDHIPR";
case CCM_CTOR:
return "CTOR";
case CCM_CLPCR:
return "CLPCR";
case CCM_CISR:
return "CISR";
case CCM_CIMR:
return "CIMR";
case CCM_CCOSR:
return "CCOSR";
case CCM_CGPR:
return "CGPR";
case CCM_CCGR0:
return "CCGR0";
case CCM_CCGR1:
return "CCGR1";
case CCM_CCGR2:
return "CCGR2";
case CCM_CCGR3:
return "CCGR3";
case CCM_CCGR4:
return "CCGR4";
case CCM_CCGR5:
return "CCGR5";
case CCM_CCGR6:
return "CCGR6";
case CCM_CMEOR:
return "CMEOR";
default:
sprintf(unknown, "%d ?", reg);
return unknown;
}
}
static const char *imx6ul_analog_reg_name(uint32_t reg)
{
static char unknown[20];
switch (reg) {
case CCM_ANALOG_PLL_ARM:
return "PLL_ARM";
case CCM_ANALOG_PLL_ARM_SET:
return "PLL_ARM_SET";
case CCM_ANALOG_PLL_ARM_CLR:
return "PLL_ARM_CLR";
case CCM_ANALOG_PLL_ARM_TOG:
return "PLL_ARM_TOG";
case CCM_ANALOG_PLL_USB1:
return "PLL_USB1";
case CCM_ANALOG_PLL_USB1_SET:
return "PLL_USB1_SET";
case CCM_ANALOG_PLL_USB1_CLR:
return "PLL_USB1_CLR";
case CCM_ANALOG_PLL_USB1_TOG:
return "PLL_USB1_TOG";
case CCM_ANALOG_PLL_USB2:
return "PLL_USB2";
case CCM_ANALOG_PLL_USB2_SET:
return "PLL_USB2_SET";
case CCM_ANALOG_PLL_USB2_CLR:
return "PLL_USB2_CLR";
case CCM_ANALOG_PLL_USB2_TOG:
return "PLL_USB2_TOG";
case CCM_ANALOG_PLL_SYS:
return "PLL_SYS";
case CCM_ANALOG_PLL_SYS_SET:
return "PLL_SYS_SET";
case CCM_ANALOG_PLL_SYS_CLR:
return "PLL_SYS_CLR";
case CCM_ANALOG_PLL_SYS_TOG:
return "PLL_SYS_TOG";
case CCM_ANALOG_PLL_SYS_SS:
return "PLL_SYS_SS";
case CCM_ANALOG_PLL_SYS_NUM:
return "PLL_SYS_NUM";
case CCM_ANALOG_PLL_SYS_DENOM:
return "PLL_SYS_DENOM";
case CCM_ANALOG_PLL_AUDIO:
return "PLL_AUDIO";
case CCM_ANALOG_PLL_AUDIO_SET:
return "PLL_AUDIO_SET";
case CCM_ANALOG_PLL_AUDIO_CLR:
return "PLL_AUDIO_CLR";
case CCM_ANALOG_PLL_AUDIO_TOG:
return "PLL_AUDIO_TOG";
case CCM_ANALOG_PLL_AUDIO_NUM:
return "PLL_AUDIO_NUM";
case CCM_ANALOG_PLL_AUDIO_DENOM:
return "PLL_AUDIO_DENOM";
case CCM_ANALOG_PLL_VIDEO:
return "PLL_VIDEO";
case CCM_ANALOG_PLL_VIDEO_SET:
return "PLL_VIDEO_SET";
case CCM_ANALOG_PLL_VIDEO_CLR:
return "PLL_VIDEO_CLR";
case CCM_ANALOG_PLL_VIDEO_TOG:
return "PLL_VIDEO_TOG";
case CCM_ANALOG_PLL_VIDEO_NUM:
return "PLL_VIDEO_NUM";
case CCM_ANALOG_PLL_VIDEO_DENOM:
return "PLL_VIDEO_DENOM";
case CCM_ANALOG_PLL_ENET:
return "PLL_ENET";
case CCM_ANALOG_PLL_ENET_SET:
return "PLL_ENET_SET";
case CCM_ANALOG_PLL_ENET_CLR:
return "PLL_ENET_CLR";
case CCM_ANALOG_PLL_ENET_TOG:
return "PLL_ENET_TOG";
case CCM_ANALOG_PFD_480:
return "PFD_480";
case CCM_ANALOG_PFD_480_SET:
return "PFD_480_SET";
case CCM_ANALOG_PFD_480_CLR:
return "PFD_480_CLR";
case CCM_ANALOG_PFD_480_TOG:
return "PFD_480_TOG";
case CCM_ANALOG_PFD_528:
return "PFD_528";
case CCM_ANALOG_PFD_528_SET:
return "PFD_528_SET";
case CCM_ANALOG_PFD_528_CLR:
return "PFD_528_CLR";
case CCM_ANALOG_PFD_528_TOG:
return "PFD_528_TOG";
case CCM_ANALOG_MISC0:
return "MISC0";
case CCM_ANALOG_MISC0_SET:
return "MISC0_SET";
case CCM_ANALOG_MISC0_CLR:
return "MISC0_CLR";
case CCM_ANALOG_MISC0_TOG:
return "MISC0_TOG";
case CCM_ANALOG_MISC2:
return "MISC2";
case CCM_ANALOG_MISC2_SET:
return "MISC2_SET";
case CCM_ANALOG_MISC2_CLR:
return "MISC2_CLR";
case CCM_ANALOG_MISC2_TOG:
return "MISC2_TOG";
case PMU_REG_1P1:
return "PMU_REG_1P1";
case PMU_REG_3P0:
return "PMU_REG_3P0";
case PMU_REG_2P5:
return "PMU_REG_2P5";
case PMU_REG_CORE:
return "PMU_REG_CORE";
case PMU_MISC1:
return "PMU_MISC1";
case PMU_MISC1_SET:
return "PMU_MISC1_SET";
case PMU_MISC1_CLR:
return "PMU_MISC1_CLR";
case PMU_MISC1_TOG:
return "PMU_MISC1_TOG";
case USB_ANALOG_DIGPROG:
return "USB_ANALOG_DIGPROG";
default:
sprintf(unknown, "%d ?", reg);
return unknown;
}
}
#define CKIH_FREQ 24000000 /* 24MHz crystal input */
static const VMStateDescription vmstate_imx6ul_ccm = {
.name = TYPE_IMX6UL_CCM,
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32_ARRAY(ccm, IMX6ULCCMState, CCM_MAX),
VMSTATE_UINT32_ARRAY(analog, IMX6ULCCMState, CCM_ANALOG_MAX),
VMSTATE_END_OF_LIST()
},
};
static uint64_t imx6ul_analog_get_osc_clk(IMX6ULCCMState *dev)
{
uint64_t freq = CKIH_FREQ;
trace_ccm_freq((uint32_t)freq);
return freq;
}
static uint64_t imx6ul_analog_get_pll2_clk(IMX6ULCCMState *dev)
{
uint64_t freq = imx6ul_analog_get_osc_clk(dev);
if (FIELD_EX32(dev->analog[CCM_ANALOG_PLL_SYS],
ANALOG_PLL_SYS, DIV_SELECT)) {
freq *= 22;
} else {
freq *= 20;
}
trace_ccm_freq((uint32_t)freq);
return freq;
}
static uint64_t imx6ul_analog_get_pll3_clk(IMX6ULCCMState *dev)
{
uint64_t freq = imx6ul_analog_get_osc_clk(dev) * 20;
trace_ccm_freq((uint32_t)freq);
return freq;
}
static uint64_t imx6ul_analog_get_pll2_pfd0_clk(IMX6ULCCMState *dev)
{
uint64_t freq = 0;
freq = imx6ul_analog_get_pll2_clk(dev) * 18
/ FIELD_EX32(dev->analog[CCM_ANALOG_PFD_528],
ANALOG_PFD_528, PFD0_FRAC);
trace_ccm_freq((uint32_t)freq);
return freq;
}
static uint64_t imx6ul_analog_get_pll2_pfd2_clk(IMX6ULCCMState *dev)
{
uint64_t freq = 0;
freq = imx6ul_analog_get_pll2_clk(dev) * 18
/ FIELD_EX32(dev->analog[CCM_ANALOG_PFD_528],
ANALOG_PFD_528, PFD2_FRAC);
trace_ccm_freq((uint32_t)freq);
return freq;
}
static uint64_t imx6ul_analog_pll2_bypass_clk(IMX6ULCCMState *dev)
{
uint64_t freq = 0;
trace_ccm_freq((uint32_t)freq);
return freq;
}
static uint64_t imx6ul_ccm_get_periph_clk2_sel_clk(IMX6ULCCMState *dev)
{
uint64_t freq = 0;
switch (FIELD_EX32(dev->ccm[CCM_CBCMR], CBCMR, PERIPH_CLK2_SEL)) {
case 0:
freq = imx6ul_analog_get_pll3_clk(dev);
break;
case 1:
freq = imx6ul_analog_get_osc_clk(dev);
break;
case 2:
freq = imx6ul_analog_pll2_bypass_clk(dev);
break;
case 3:
/* We should never get there as 3 is a reserved value */
qemu_log_mask(LOG_GUEST_ERROR,
"[%s]%s: unsupported PERIPH_CLK2_SEL value 3\n",
TYPE_IMX6UL_CCM, __func__);
/* freq is set to 0 as we don't know what it should be */
break;
default:
g_assert_not_reached();
}
trace_ccm_freq((uint32_t)freq);
return freq;
}
static uint64_t imx6ul_ccm_get_periph_clk_sel_clk(IMX6ULCCMState *dev)
{
uint64_t freq = 0;
switch (FIELD_EX32(dev->ccm[CCM_CBCMR], CBCMR, PRE_PERIPH_CLK_SEL)) {
case 0:
freq = imx6ul_analog_get_pll2_clk(dev);
break;
case 1:
freq = imx6ul_analog_get_pll2_pfd2_clk(dev);
break;
case 2:
freq = imx6ul_analog_get_pll2_pfd0_clk(dev);
break;
case 3:
freq = imx6ul_analog_get_pll2_pfd2_clk(dev) / 2;
break;
default:
g_assert_not_reached();
}
trace_ccm_freq((uint32_t)freq);
return freq;
}
static uint64_t imx6ul_ccm_get_periph_clk2_clk(IMX6ULCCMState *dev)
{
uint64_t freq = 0;
freq = imx6ul_ccm_get_periph_clk2_sel_clk(dev)
/ (1 + FIELD_EX32(dev->ccm[CCM_CBCDR], CBCDR, PERIPH_CLK2_PODF));
trace_ccm_freq((uint32_t)freq);
return freq;
}
static uint64_t imx6ul_ccm_get_periph_sel_clk(IMX6ULCCMState *dev)
{
uint64_t freq = 0;
switch (FIELD_EX32(dev->ccm[CCM_CBCDR], CBCDR, PERIPH_CLK_SEL)) {
case 0:
freq = imx6ul_ccm_get_periph_clk_sel_clk(dev);
break;
case 1:
freq = imx6ul_ccm_get_periph_clk2_clk(dev);
break;
default:
g_assert_not_reached();
}
trace_ccm_freq((uint32_t)freq);
return freq;
}
static uint64_t imx6ul_ccm_get_ahb_clk(IMX6ULCCMState *dev)
{
uint64_t freq = 0;
freq = imx6ul_ccm_get_periph_sel_clk(dev)
/ (1 + FIELD_EX32(dev->ccm[CCM_CBCDR], CBCDR, AHB_PODF));
trace_ccm_freq((uint32_t)freq);
return freq;
}
static uint64_t imx6ul_ccm_get_ipg_clk(IMX6ULCCMState *dev)
{
uint64_t freq = 0;
freq = imx6ul_ccm_get_ahb_clk(dev)
/ (1 + FIELD_EX32(dev->ccm[CCM_CBCDR], CBCDR, IPG_PODF));
trace_ccm_freq((uint32_t)freq);
return freq;
}
static uint64_t imx6ul_ccm_get_per_sel_clk(IMX6ULCCMState *dev)
{
uint64_t freq = 0;
switch (FIELD_EX32(dev->ccm[CCM_CSCMR1], CSCMR1, PERCLK_CLK_SEL)) {
case 0:
freq = imx6ul_ccm_get_ipg_clk(dev);
break;
case 1:
freq = imx6ul_analog_get_osc_clk(dev);
break;
default:
g_assert_not_reached();
}
trace_ccm_freq((uint32_t)freq);
return freq;
}
static uint64_t imx6ul_ccm_get_per_clk(IMX6ULCCMState *dev)
{
uint64_t freq = 0;
freq = imx6ul_ccm_get_per_sel_clk(dev)
/ (1 + FIELD_EX32(dev->ccm[CCM_CSCMR1], CSCMR1, PERCLK_PODF));
trace_ccm_freq((uint32_t)freq);
return freq;
}
static uint32_t imx6ul_ccm_get_clock_frequency(IMXCCMState *dev, IMXClk clock)
{
uint32_t freq = 0;
IMX6ULCCMState *s = IMX6UL_CCM(dev);
switch (clock) {
case CLK_NONE:
break;
case CLK_IPG:
freq = imx6ul_ccm_get_ipg_clk(s);
break;
case CLK_IPG_HIGH:
freq = imx6ul_ccm_get_per_clk(s);
break;
case CLK_32k:
freq = CKIL_FREQ;
break;
case CLK_HIGH:
freq = CKIH_FREQ;
break;
case CLK_HIGH_DIV:
freq = CKIH_FREQ / 8;
break;
default:
qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: unsupported clock %d\n",
TYPE_IMX6UL_CCM, __func__, clock);
break;
}
trace_ccm_clock_freq(clock, freq);
return freq;
}
static void imx6ul_ccm_reset(DeviceState *dev)
{
IMX6ULCCMState *s = IMX6UL_CCM(dev);
trace_ccm_entry();
s->ccm[CCM_CCR] = 0x0401167F;
s->ccm[CCM_CCDR] = 0x00000000;
s->ccm[CCM_CSR] = 0x00000010;
s->ccm[CCM_CCSR] = 0x00000100;
s->ccm[CCM_CACRR] = 0x00000000;
s->ccm[CCM_CBCDR] = 0x00018D00;
s->ccm[CCM_CBCMR] = 0x24860324;
s->ccm[CCM_CSCMR1] = 0x04900080;
s->ccm[CCM_CSCMR2] = 0x03192F06;
s->ccm[CCM_CSCDR1] = 0x00490B00;
s->ccm[CCM_CS1CDR] = 0x0EC102C1;
s->ccm[CCM_CS2CDR] = 0x000336C1;
s->ccm[CCM_CDCDR] = 0x33F71F92;
s->ccm[CCM_CHSCCDR] = 0x000248A4;
s->ccm[CCM_CSCDR2] = 0x00029B48;
s->ccm[CCM_CSCDR3] = 0x00014841;
s->ccm[CCM_CDHIPR] = 0x00000000;
s->ccm[CCM_CTOR] = 0x00000000;
s->ccm[CCM_CLPCR] = 0x00000079;
s->ccm[CCM_CISR] = 0x00000000;
s->ccm[CCM_CIMR] = 0xFFFFFFFF;
s->ccm[CCM_CCOSR] = 0x000A0001;
s->ccm[CCM_CGPR] = 0x0000FE62;
s->ccm[CCM_CCGR0] = 0xFFFFFFFF;
s->ccm[CCM_CCGR1] = 0xFFFFFFFF;
s->ccm[CCM_CCGR2] = 0xFC3FFFFF;
s->ccm[CCM_CCGR3] = 0xFFFFFFFF;
s->ccm[CCM_CCGR4] = 0xFFFFFFFF;
s->ccm[CCM_CCGR5] = 0xFFFFFFFF;
s->ccm[CCM_CCGR6] = 0xFFFFFFFF;
s->ccm[CCM_CMEOR] = 0xFFFFFFFF;
s->analog[CCM_ANALOG_PLL_ARM] = 0x00013063;
s->analog[CCM_ANALOG_PLL_USB1] = 0x00012000;
s->analog[CCM_ANALOG_PLL_USB2] = 0x00012000;
s->analog[CCM_ANALOG_PLL_SYS] = 0x00013001;
s->analog[CCM_ANALOG_PLL_SYS_SS] = 0x00000000;
s->analog[CCM_ANALOG_PLL_SYS_NUM] = 0x00000000;
s->analog[CCM_ANALOG_PLL_SYS_DENOM] = 0x00000012;
s->analog[CCM_ANALOG_PLL_AUDIO] = 0x00011006;
s->analog[CCM_ANALOG_PLL_AUDIO_NUM] = 0x05F5E100;
s->analog[CCM_ANALOG_PLL_AUDIO_DENOM] = 0x2964619C;
s->analog[CCM_ANALOG_PLL_VIDEO] = 0x0001100C;
s->analog[CCM_ANALOG_PLL_VIDEO_NUM] = 0x05F5E100;
s->analog[CCM_ANALOG_PLL_VIDEO_DENOM] = 0x10A24447;
s->analog[CCM_ANALOG_PLL_ENET] = 0x00011001;
s->analog[CCM_ANALOG_PFD_480] = 0x1311100C;
s->analog[CCM_ANALOG_PFD_528] = 0x1018101B;
s->analog[PMU_REG_1P1] = 0x00001073;
s->analog[PMU_REG_3P0] = 0x00000F74;
s->analog[PMU_REG_2P5] = 0x00001073;
s->analog[PMU_REG_CORE] = 0x00482012;
s->analog[PMU_MISC0] = 0x04000000;
s->analog[PMU_MISC1] = 0x00000000;
s->analog[PMU_MISC2] = 0x00272727;
s->analog[PMU_LOWPWR_CTRL] = 0x00004009;
s->analog[USB_ANALOG_USB1_VBUS_DETECT] = 0x01000004;
s->analog[USB_ANALOG_USB1_CHRG_DETECT] = 0x00000000;
s->analog[USB_ANALOG_USB1_VBUS_DETECT_STAT] = 0x00000000;
s->analog[USB_ANALOG_USB1_CHRG_DETECT_STAT] = 0x00000000;
s->analog[USB_ANALOG_USB1_MISC] = 0x00000002;
s->analog[USB_ANALOG_USB2_VBUS_DETECT] = 0x01000004;
s->analog[USB_ANALOG_USB2_CHRG_DETECT] = 0x00000000;
s->analog[USB_ANALOG_USB2_MISC] = 0x00000002;
s->analog[USB_ANALOG_DIGPROG] = 0x00640000;
/* all PLLs need to be locked */
s->analog[CCM_ANALOG_PLL_ARM] |= CCM_ANALOG_PLL_LOCK;
s->analog[CCM_ANALOG_PLL_USB1] |= CCM_ANALOG_PLL_LOCK;
s->analog[CCM_ANALOG_PLL_USB2] |= CCM_ANALOG_PLL_LOCK;
s->analog[CCM_ANALOG_PLL_SYS] |= CCM_ANALOG_PLL_LOCK;
s->analog[CCM_ANALOG_PLL_AUDIO] |= CCM_ANALOG_PLL_LOCK;
s->analog[CCM_ANALOG_PLL_VIDEO] |= CCM_ANALOG_PLL_LOCK;
s->analog[CCM_ANALOG_PLL_ENET] |= CCM_ANALOG_PLL_LOCK;
s->analog[TEMPMON_TEMPSENSE0] = 0x00000001;
s->analog[TEMPMON_TEMPSENSE1] = 0x00000001;
s->analog[TEMPMON_TEMPSENSE2] = 0x00000000;
}
static uint64_t imx6ul_ccm_read(void *opaque, hwaddr offset, unsigned size)
{
uint32_t value = 0;
uint32_t index = offset >> 2;
IMX6ULCCMState *s = (IMX6ULCCMState *)opaque;
assert(index < CCM_MAX);
value = s->ccm[index];
trace_ccm_read_reg(imx6ul_ccm_reg_name(index), (uint32_t)value);
return (uint64_t)value;
}
static void imx6ul_ccm_write(void *opaque, hwaddr offset, uint64_t value,
unsigned size)
{
uint32_t index = offset >> 2;
IMX6ULCCMState *s = (IMX6ULCCMState *)opaque;
assert(index < CCM_MAX);
trace_ccm_write_reg(imx6ul_ccm_reg_name(index), (uint32_t)value);
s->ccm[index] = (s->ccm[index] & ccm_mask[index]) |
((uint32_t)value & ~ccm_mask[index]);
}
static uint64_t imx6ul_analog_read(void *opaque, hwaddr offset, unsigned size)
{
uint32_t value;
uint32_t index = offset >> 2;
IMX6ULCCMState *s = (IMX6ULCCMState *)opaque;
assert(index < CCM_ANALOG_MAX);
switch (index) {
case CCM_ANALOG_PLL_ARM_SET:
case CCM_ANALOG_PLL_USB1_SET:
case CCM_ANALOG_PLL_USB2_SET:
case CCM_ANALOG_PLL_SYS_SET:
case CCM_ANALOG_PLL_AUDIO_SET:
case CCM_ANALOG_PLL_VIDEO_SET:
case CCM_ANALOG_PLL_ENET_SET:
case CCM_ANALOG_PFD_480_SET:
case CCM_ANALOG_PFD_528_SET:
case CCM_ANALOG_MISC0_SET:
case PMU_MISC1_SET:
case CCM_ANALOG_MISC2_SET:
case USB_ANALOG_USB1_VBUS_DETECT_SET:
case USB_ANALOG_USB1_CHRG_DETECT_SET:
case USB_ANALOG_USB1_MISC_SET:
case USB_ANALOG_USB2_VBUS_DETECT_SET:
case USB_ANALOG_USB2_CHRG_DETECT_SET:
case USB_ANALOG_USB2_MISC_SET:
case TEMPMON_TEMPSENSE0_SET:
case TEMPMON_TEMPSENSE1_SET:
case TEMPMON_TEMPSENSE2_SET:
/*
* All REG_NAME_SET register access are in fact targeting
* the REG_NAME register.
*/
value = s->analog[index - 1];
break;
case CCM_ANALOG_PLL_ARM_CLR:
case CCM_ANALOG_PLL_USB1_CLR:
case CCM_ANALOG_PLL_USB2_CLR:
case CCM_ANALOG_PLL_SYS_CLR:
case CCM_ANALOG_PLL_AUDIO_CLR:
case CCM_ANALOG_PLL_VIDEO_CLR:
case CCM_ANALOG_PLL_ENET_CLR:
case CCM_ANALOG_PFD_480_CLR:
case CCM_ANALOG_PFD_528_CLR:
case CCM_ANALOG_MISC0_CLR:
case PMU_MISC1_CLR:
case CCM_ANALOG_MISC2_CLR:
case USB_ANALOG_USB1_VBUS_DETECT_CLR:
case USB_ANALOG_USB1_CHRG_DETECT_CLR:
case USB_ANALOG_USB1_MISC_CLR:
case USB_ANALOG_USB2_VBUS_DETECT_CLR:
case USB_ANALOG_USB2_CHRG_DETECT_CLR:
case USB_ANALOG_USB2_MISC_CLR:
case TEMPMON_TEMPSENSE0_CLR:
case TEMPMON_TEMPSENSE1_CLR:
case TEMPMON_TEMPSENSE2_CLR:
/*
* All REG_NAME_CLR register access are in fact targeting
* the REG_NAME register.
*/
value = s->analog[index - 2];
break;
case CCM_ANALOG_PLL_ARM_TOG:
case CCM_ANALOG_PLL_USB1_TOG:
case CCM_ANALOG_PLL_USB2_TOG:
case CCM_ANALOG_PLL_SYS_TOG:
case CCM_ANALOG_PLL_AUDIO_TOG:
case CCM_ANALOG_PLL_VIDEO_TOG:
case CCM_ANALOG_PLL_ENET_TOG:
case CCM_ANALOG_PFD_480_TOG:
case CCM_ANALOG_PFD_528_TOG:
case CCM_ANALOG_MISC0_TOG:
case PMU_MISC1_TOG:
case CCM_ANALOG_MISC2_TOG:
case USB_ANALOG_USB1_VBUS_DETECT_TOG:
case USB_ANALOG_USB1_CHRG_DETECT_TOG:
case USB_ANALOG_USB1_MISC_TOG:
case USB_ANALOG_USB2_VBUS_DETECT_TOG:
case USB_ANALOG_USB2_CHRG_DETECT_TOG:
case USB_ANALOG_USB2_MISC_TOG:
case TEMPMON_TEMPSENSE0_TOG:
case TEMPMON_TEMPSENSE1_TOG:
case TEMPMON_TEMPSENSE2_TOG:
/*
* All REG_NAME_TOG register access are in fact targeting
* the REG_NAME register.
*/
value = s->analog[index - 3];
break;
default:
value = s->analog[index];
break;
}
trace_ccm_read_reg(imx6ul_analog_reg_name(index), (uint32_t)value);
return (uint64_t)value;
}
static void imx6ul_analog_write(void *opaque, hwaddr offset, uint64_t value,
unsigned size)
{
uint32_t index = offset >> 2;
IMX6ULCCMState *s = (IMX6ULCCMState *)opaque;
assert(index < CCM_ANALOG_MAX);
trace_ccm_write_reg(imx6ul_analog_reg_name(index), (uint32_t)value);
switch (index) {
case CCM_ANALOG_PLL_ARM_SET:
case CCM_ANALOG_PLL_USB1_SET:
case CCM_ANALOG_PLL_USB2_SET:
case CCM_ANALOG_PLL_SYS_SET:
case CCM_ANALOG_PLL_AUDIO_SET:
case CCM_ANALOG_PLL_VIDEO_SET:
case CCM_ANALOG_PLL_ENET_SET:
case CCM_ANALOG_PFD_480_SET:
case CCM_ANALOG_PFD_528_SET:
case CCM_ANALOG_MISC0_SET:
case PMU_MISC1_SET:
case CCM_ANALOG_MISC2_SET:
case USB_ANALOG_USB1_VBUS_DETECT_SET:
case USB_ANALOG_USB1_CHRG_DETECT_SET:
case USB_ANALOG_USB1_MISC_SET:
case USB_ANALOG_USB2_VBUS_DETECT_SET:
case USB_ANALOG_USB2_CHRG_DETECT_SET:
case USB_ANALOG_USB2_MISC_SET:
/*
* All REG_NAME_SET register access are in fact targeting
* the REG_NAME register. So we change the value of the
* REG_NAME register, setting bits passed in the value.
*/
s->analog[index - 1] |= (value & ~analog_mask[index - 1]);
break;
case CCM_ANALOG_PLL_ARM_CLR:
case CCM_ANALOG_PLL_USB1_CLR:
case CCM_ANALOG_PLL_USB2_CLR:
case CCM_ANALOG_PLL_SYS_CLR:
case CCM_ANALOG_PLL_AUDIO_CLR:
case CCM_ANALOG_PLL_VIDEO_CLR:
case CCM_ANALOG_PLL_ENET_CLR:
case CCM_ANALOG_PFD_480_CLR:
case CCM_ANALOG_PFD_528_CLR:
case CCM_ANALOG_MISC0_CLR:
case PMU_MISC1_CLR:
case CCM_ANALOG_MISC2_CLR:
case USB_ANALOG_USB1_VBUS_DETECT_CLR:
case USB_ANALOG_USB1_CHRG_DETECT_CLR:
case USB_ANALOG_USB1_MISC_CLR:
case USB_ANALOG_USB2_VBUS_DETECT_CLR:
case USB_ANALOG_USB2_CHRG_DETECT_CLR:
case USB_ANALOG_USB2_MISC_CLR:
/*
* All REG_NAME_CLR register access are in fact targeting
* the REG_NAME register. So we change the value of the
* REG_NAME register, unsetting bits passed in the value.
*/
s->analog[index - 2] &= ~(value & ~analog_mask[index - 2]);
break;
case CCM_ANALOG_PLL_ARM_TOG:
case CCM_ANALOG_PLL_USB1_TOG:
case CCM_ANALOG_PLL_USB2_TOG:
case CCM_ANALOG_PLL_SYS_TOG:
case CCM_ANALOG_PLL_AUDIO_TOG:
case CCM_ANALOG_PLL_VIDEO_TOG:
case CCM_ANALOG_PLL_ENET_TOG:
case CCM_ANALOG_PFD_480_TOG:
case CCM_ANALOG_PFD_528_TOG:
case CCM_ANALOG_MISC0_TOG:
case PMU_MISC1_TOG:
case CCM_ANALOG_MISC2_TOG:
case USB_ANALOG_USB1_VBUS_DETECT_TOG:
case USB_ANALOG_USB1_CHRG_DETECT_TOG:
case USB_ANALOG_USB1_MISC_TOG:
case USB_ANALOG_USB2_VBUS_DETECT_TOG:
case USB_ANALOG_USB2_CHRG_DETECT_TOG:
case USB_ANALOG_USB2_MISC_TOG:
/*
* All REG_NAME_TOG register access are in fact targeting
* the REG_NAME register. So we change the value of the
* REG_NAME register, toggling bits passed in the value.
*/
s->analog[index - 3] ^= (value & ~analog_mask[index - 3]);
break;
default:
s->analog[index] = (s->analog[index] & analog_mask[index]) |
(value & ~analog_mask[index]);
break;
}
}
static const struct MemoryRegionOps imx6ul_ccm_ops = {
.read = imx6ul_ccm_read,
.write = imx6ul_ccm_write,
.endianness = DEVICE_NATIVE_ENDIAN,
.valid = {
/*
* Our device would not work correctly if the guest was doing
* unaligned access. This might not be a limitation on the real
* device but in practice there is no reason for a guest to access
* this device unaligned.
*/
.min_access_size = 4,
.max_access_size = 4,
.unaligned = false,
},
};
static const struct MemoryRegionOps imx6ul_analog_ops = {
.read = imx6ul_analog_read,
.write = imx6ul_analog_write,
.endianness = DEVICE_NATIVE_ENDIAN,
.valid = {
/*
* Our device would not work correctly if the guest was doing
* unaligned access. This might not be a limitation on the real
* device but in practice there is no reason for a guest to access
* this device unaligned.
*/
.min_access_size = 4,
.max_access_size = 4,
.unaligned = false,
},
};
static void imx6ul_ccm_init(Object *obj)
{
DeviceState *dev = DEVICE(obj);
SysBusDevice *sd = SYS_BUS_DEVICE(obj);
IMX6ULCCMState *s = IMX6UL_CCM(obj);
/* initialize a container for the all memory range */
memory_region_init(&s->container, OBJECT(dev), TYPE_IMX6UL_CCM, 0x8000);
/* We initialize an IO memory region for the CCM part */
memory_region_init_io(&s->ioccm, OBJECT(dev), &imx6ul_ccm_ops, s,
TYPE_IMX6UL_CCM ".ccm", CCM_MAX * sizeof(uint32_t));
/* Add the CCM as a subregion at offset 0 */
memory_region_add_subregion(&s->container, 0, &s->ioccm);
/* We initialize an IO memory region for the ANALOG part */
memory_region_init_io(&s->ioanalog, OBJECT(dev), &imx6ul_analog_ops, s,
TYPE_IMX6UL_CCM ".analog",
CCM_ANALOG_MAX * sizeof(uint32_t));
/* Add the ANALOG as a subregion at offset 0x4000 */
memory_region_add_subregion(&s->container, 0x4000, &s->ioanalog);
sysbus_init_mmio(sd, &s->container);
}
static void imx6ul_ccm_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
IMXCCMClass *ccm = IMX_CCM_CLASS(klass);
dc->reset = imx6ul_ccm_reset;
dc->vmsd = &vmstate_imx6ul_ccm;
dc->desc = "i.MX6UL Clock Control Module";
ccm->get_clock_frequency = imx6ul_ccm_get_clock_frequency;
}
static const TypeInfo imx6ul_ccm_info = {
.name = TYPE_IMX6UL_CCM,
.parent = TYPE_IMX_CCM,
.instance_size = sizeof(IMX6ULCCMState),
.instance_init = imx6ul_ccm_init,
.class_init = imx6ul_ccm_class_init,
};
static void imx6ul_ccm_register_types(void)
{
type_register_static(&imx6ul_ccm_info);
}
type_init(imx6ul_ccm_register_types)
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