mirror of
https://github.com/Decscots/Lockpick_RCM
synced 2024-12-23 03:31:11 +00:00
313 lines
9.7 KiB
C
313 lines
9.7 KiB
C
/*
|
|
* BPMP-Lite Cache/MMU and Frequency driver for Tegra X1
|
|
*
|
|
* Copyright (c) 2019-2021 CTCaer
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <soc/bpmp.h>
|
|
#include <soc/clock.h>
|
|
#include <soc/t210.h>
|
|
#include <memory_map.h>
|
|
#include <utils/util.h>
|
|
|
|
#define BPMP_MMU_CACHE_LINE_SIZE 0x20
|
|
|
|
#define BPMP_CACHE_CONFIG 0x0
|
|
#define CFG_ENABLE_CACHE BIT(0)
|
|
#define CFG_ENABLE_SKEW_ASSOC BIT(1)
|
|
#define CFG_DISABLE_RANDOM_ALLOC BIT(2)
|
|
#define CFG_FORCE_WRITE_THROUGH BIT(3)
|
|
#define CFG_NEVER_ALLOCATE BIT(6)
|
|
#define CFG_ENABLE_INTERRUPT BIT(7)
|
|
#define CFG_MMU_TAG_MODE(x) ((x) << 8)
|
|
#define TAG_MODE_PARALLEL 0
|
|
#define TAG_MODE_TAG_FIRST 1
|
|
#define TAG_MODE_MMU_FIRST 2
|
|
#define CFG_DISABLE_WRITE_BUFFER BIT(10)
|
|
#define CFG_DISABLE_READ_BUFFER BIT(11)
|
|
#define CFG_ENABLE_HANG_DETECT BIT(12)
|
|
#define CFG_FULL_LINE_DIRTY BIT(13)
|
|
#define CFG_TAG_CHK_ABRT_ON_ERR BIT(14)
|
|
#define CFG_TAG_CHK_CLR_ERR BIT(15)
|
|
#define CFG_DISABLE_SAMELINE BIT(16)
|
|
#define CFG_OBS_BUS_EN BIT(31)
|
|
|
|
#define BPMP_CACHE_LOCK 0x4
|
|
#define LOCK_LINE(x) BIT((x))
|
|
|
|
#define BPMP_CACHE_SIZE 0xC
|
|
#define BPMP_CACHE_LFSR 0x10
|
|
|
|
#define BPMP_CACHE_TAG_STATUS 0x14
|
|
#define TAG_STATUS_TAG_CHECK_ERROR BIT(0)
|
|
#define TAG_STATUS_CONFLICT_ADDR_MASK 0xFFFFFFE0
|
|
|
|
#define BPMP_CACHE_CLKEN_OVERRIDE 0x18
|
|
#define CLKEN_OVERRIDE_WR_MCCIF_CLKEN BIT(0)
|
|
#define CLKEN_OVERRIDE_RD_MCCIF_CLKEN BIT(1)
|
|
|
|
#define BPMP_CACHE_MAINT_ADDR 0x20
|
|
#define BPMP_CACHE_MAINT_DATA 0x24
|
|
|
|
#define BPMP_CACHE_MAINT_REQ 0x28
|
|
#define MAINT_REQ_WAY_BITMAP(x) ((x) << 8)
|
|
|
|
#define BPMP_CACHE_INT_MASK 0x40
|
|
#define BPMP_CACHE_INT_CLEAR 0x44
|
|
#define BPMP_CACHE_INT_RAW_EVENT 0x48
|
|
#define BPMP_CACHE_INT_STATUS 0x4C
|
|
#define INT_MAINT_DONE BIT(0)
|
|
#define INT_MAINT_ERROR BIT(1)
|
|
|
|
#define BPMP_CACHE_RB_CFG 0x80
|
|
#define BPMP_CACHE_WB_CFG 0x84
|
|
|
|
#define BPMP_CACHE_MMU_FALLBACK_ENTRY 0xA0
|
|
#define BPMP_CACHE_MMU_SHADOW_COPY_MASK 0xA4
|
|
|
|
#define BPMP_CACHE_MMU_CFG 0xAC
|
|
#define MMU_CFG_BLOCK_MAIN_ENTRY_WR BIT(0)
|
|
#define MMU_CFG_SEQ_EN BIT(1)
|
|
#define MMU_CFG_TLB_EN BIT(2)
|
|
#define MMU_CFG_SEG_CHECK_ALL_ENTRIES BIT(3)
|
|
#define MMU_CFG_ABORT_STORE_LAST BIT(4)
|
|
#define MMU_CFG_CLR_ABORT BIT(5)
|
|
|
|
#define BPMP_CACHE_MMU_CMD 0xB0
|
|
#define MMU_CMD_NOP 0
|
|
#define MMU_CMD_INIT 1
|
|
#define MMU_CMD_COPY_SHADOW 2
|
|
|
|
#define BPMP_CACHE_MMU_ABORT_STAT 0xB4
|
|
#define ABORT_STAT_UNIT_MASK 0x7
|
|
#define ABORT_STAT_UNIT_NONE 0
|
|
#define ABORT_STAT_UNIT_CACHE 1
|
|
#define ABORT_STAT_UNIT_SEQ 2
|
|
#define ABORT_STAT_UNIT_TLB 3
|
|
#define ABORT_STAT_UNIT_SEG 4
|
|
#define ABORT_STAT_UNIT_FALLBACK 5
|
|
#define ABORT_STAT_OVERLAP BIT(3)
|
|
#define ABORT_STAT_ENTRY (0x1F << 4)
|
|
#define ABORT_STAT_TYPE_MASK (3 << 16)
|
|
#define ABORT_STAT_TYPE_EXE (0 << 16)
|
|
#define ABORT_STAT_TYPE_RD (1 << 16)
|
|
#define ABORT_STAT_TYPE_WR (2 << 16)
|
|
#define ABORT_STAT_SIZE (3 << 18)
|
|
#define ABORT_STAT_SEQ BIT(20)
|
|
#define ABORT_STAT_PROT BIT(21)
|
|
|
|
#define BPMP_CACHE_MMU_ABORT_ADDR 0xB8
|
|
#define BPMP_CACHE_MMU_ACTIVE_ENTRIES 0xBC
|
|
|
|
#define BPMP_MMU_SHADOW_ENTRY_BASE (BPMP_CACHE_BASE + 0x400)
|
|
#define BPMP_MMU_MAIN_ENTRY_BASE (BPMP_CACHE_BASE + 0x800)
|
|
#define MMU_EN_CACHED BIT(0)
|
|
#define MMU_EN_EXEC BIT(1)
|
|
#define MMU_EN_READ BIT(2)
|
|
#define MMU_EN_WRITE BIT(3)
|
|
|
|
bpmp_mmu_entry_t mmu_entries[] =
|
|
{
|
|
{ DRAM_START, 0xFFFFFFFF, MMU_EN_READ | MMU_EN_WRITE | MMU_EN_EXEC | MMU_EN_CACHED, true },
|
|
{ IRAM_BASE, 0x4003FFFF, MMU_EN_READ | MMU_EN_WRITE | MMU_EN_EXEC | MMU_EN_CACHED, true }
|
|
};
|
|
|
|
void bpmp_mmu_maintenance(u32 op, bool force)
|
|
{
|
|
if (!force && !(BPMP_CACHE_CTRL(BPMP_CACHE_CONFIG) & CFG_ENABLE_CACHE))
|
|
return;
|
|
|
|
BPMP_CACHE_CTRL(BPMP_CACHE_INT_CLEAR) = INT_MAINT_DONE;
|
|
|
|
// This is a blocking operation.
|
|
BPMP_CACHE_CTRL(BPMP_CACHE_MAINT_REQ) = MAINT_REQ_WAY_BITMAP(0xF) | op;
|
|
|
|
while(!(BPMP_CACHE_CTRL(BPMP_CACHE_INT_RAW_EVENT) & INT_MAINT_DONE))
|
|
;
|
|
|
|
BPMP_CACHE_CTRL(BPMP_CACHE_INT_CLEAR) = BPMP_CACHE_CTRL(BPMP_CACHE_INT_RAW_EVENT);
|
|
}
|
|
|
|
void bpmp_mmu_set_entry(int idx, bpmp_mmu_entry_t *entry, bool apply)
|
|
{
|
|
if (idx > 31)
|
|
return;
|
|
|
|
volatile bpmp_mmu_entry_t *mmu_entry = (bpmp_mmu_entry_t *)(BPMP_MMU_SHADOW_ENTRY_BASE + sizeof(bpmp_mmu_entry_t) * idx);
|
|
|
|
if (entry->enable)
|
|
{
|
|
mmu_entry->start_addr = ALIGN(entry->start_addr, BPMP_MMU_CACHE_LINE_SIZE);
|
|
mmu_entry->end_addr = ALIGN_DOWN(entry->end_addr, BPMP_MMU_CACHE_LINE_SIZE);
|
|
mmu_entry->attr = entry->attr;
|
|
|
|
BPMP_CACHE_CTRL(BPMP_CACHE_MMU_SHADOW_COPY_MASK) |= BIT(idx);
|
|
|
|
if (apply)
|
|
BPMP_CACHE_CTRL(BPMP_CACHE_MMU_CMD) = MMU_CMD_COPY_SHADOW;
|
|
}
|
|
}
|
|
|
|
void bpmp_mmu_enable()
|
|
{
|
|
if (BPMP_CACHE_CTRL(BPMP_CACHE_CONFIG) & CFG_ENABLE_CACHE)
|
|
return;
|
|
|
|
// Init BPMP MMU.
|
|
BPMP_CACHE_CTRL(BPMP_CACHE_MMU_CMD) = MMU_CMD_INIT;
|
|
BPMP_CACHE_CTRL(BPMP_CACHE_MMU_FALLBACK_ENTRY) = MMU_EN_READ | MMU_EN_WRITE | MMU_EN_EXEC; // RWX for non-defined regions.
|
|
BPMP_CACHE_CTRL(BPMP_CACHE_MMU_CFG) = MMU_CFG_SEQ_EN | MMU_CFG_TLB_EN | MMU_CFG_ABORT_STORE_LAST;
|
|
|
|
// Init BPMP MMU entries.
|
|
BPMP_CACHE_CTRL(BPMP_CACHE_MMU_SHADOW_COPY_MASK) = 0;
|
|
for (u32 idx = 0; idx < ARRAY_SIZE(mmu_entries); idx++)
|
|
bpmp_mmu_set_entry(idx, &mmu_entries[idx], false);
|
|
|
|
BPMP_CACHE_CTRL(BPMP_CACHE_MMU_CMD) = MMU_CMD_COPY_SHADOW;
|
|
|
|
// Invalidate cache.
|
|
bpmp_mmu_maintenance(BPMP_MMU_MAINT_INVALID_WAY, true);
|
|
|
|
// Enable cache.
|
|
BPMP_CACHE_CTRL(BPMP_CACHE_CONFIG) = CFG_ENABLE_CACHE | CFG_FORCE_WRITE_THROUGH |
|
|
CFG_MMU_TAG_MODE(TAG_MODE_PARALLEL) | CFG_TAG_CHK_ABRT_ON_ERR;
|
|
|
|
// HW bug. Invalidate cache again.
|
|
bpmp_mmu_maintenance(BPMP_MMU_MAINT_INVALID_WAY, false);
|
|
}
|
|
|
|
void bpmp_mmu_disable()
|
|
{
|
|
if (!(BPMP_CACHE_CTRL(BPMP_CACHE_CONFIG) & CFG_ENABLE_CACHE))
|
|
return;
|
|
|
|
// Clean and invalidate cache.
|
|
bpmp_mmu_maintenance(BPMP_MMU_MAINT_CLN_INV_WAY, false);
|
|
|
|
// Disable cache.
|
|
BPMP_CACHE_CTRL(BPMP_CACHE_CONFIG) = 0;
|
|
}
|
|
|
|
// APB clock affects RTC, PWM, MEMFETCH, APE, USB, SOR PWM,
|
|
// I2C host, DC/DSI/DISP. UART gives extra stress.
|
|
// 92: 100% success ratio. 93-94: 595-602MHz has 99% success ratio. 95: 608MHz less.
|
|
const u8 pll_divn[] = {
|
|
0, // BPMP_CLK_NORMAL: 408MHz 0% - 136MHz APB.
|
|
85, // BPMP_CLK_HIGH_BOOST: 544MHz 33% - 136MHz APB.
|
|
90, // BPMP_CLK_SUPER_BOOST: 576MHz 41% - 144MHz APB.
|
|
92 // BPMP_CLK_HYPER_BOOST: 589MHz 44% - 147MHz APB.
|
|
// Do not use for public releases!
|
|
//95 // BPMP_CLK_DEV_BOOST: 608MHz 49% - 152MHz APB.
|
|
};
|
|
|
|
bpmp_freq_t bpmp_fid_current = BPMP_CLK_NORMAL;
|
|
|
|
void bpmp_clk_rate_get()
|
|
{
|
|
bool clk_src_is_pllp = ((CLOCK(CLK_RST_CONTROLLER_SCLK_BURST_POLICY) >> 4) & 7) == 3;
|
|
|
|
if (clk_src_is_pllp)
|
|
bpmp_fid_current = BPMP_CLK_NORMAL;
|
|
else
|
|
{
|
|
bpmp_fid_current = BPMP_CLK_HIGH_BOOST;
|
|
|
|
u8 pll_divn_curr = (CLOCK(CLK_RST_CONTROLLER_PLLC_BASE) >> 10) & 0xFF;
|
|
for (u32 i = 1; i < sizeof(pll_divn); i++)
|
|
{
|
|
if (pll_divn[i] == pll_divn_curr)
|
|
{
|
|
bpmp_fid_current = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bpmp_freq_t bpmp_clk_rate_set(bpmp_freq_t fid)
|
|
{
|
|
bpmp_freq_t prev_fid = bpmp_fid_current;
|
|
|
|
if (fid > (BPMP_CLK_MAX - 1))
|
|
fid = BPMP_CLK_MAX - 1;
|
|
|
|
if (prev_fid == fid)
|
|
return prev_fid;
|
|
|
|
if (fid)
|
|
{
|
|
if (prev_fid)
|
|
{
|
|
// Restore to PLLP source during PLLC configuration.
|
|
CLOCK(CLK_RST_CONTROLLER_SCLK_BURST_POLICY) = 0x20003333; // PLLP_OUT.
|
|
msleep(1); // Wait a bit for clock source change.
|
|
}
|
|
|
|
// Configure and enable PLLC.
|
|
clock_enable_pllc(pll_divn[fid]);
|
|
|
|
// Set SCLK / HCLK / PCLK.
|
|
CLOCK(CLK_RST_CONTROLLER_CLK_SYSTEM_RATE) = 3; // PCLK = HCLK / (3 + 1). HCLK == SCLK.
|
|
CLOCK(CLK_RST_CONTROLLER_SCLK_BURST_POLICY) = 0x20003310; // PLLC_OUT1 for active and CLKM for idle.
|
|
}
|
|
else
|
|
{
|
|
CLOCK(CLK_RST_CONTROLLER_SCLK_BURST_POLICY) = 0x20003330; // PLLP_OUT for active and CLKM for idle.
|
|
msleep(1); // Wait a bit for clock source change.
|
|
CLOCK(CLK_RST_CONTROLLER_CLK_SYSTEM_RATE) = 2; // PCLK = HCLK / (2 + 1). HCLK == SCLK.
|
|
|
|
// Disable PLLC to save power.
|
|
clock_disable_pllc();
|
|
}
|
|
bpmp_fid_current = fid;
|
|
|
|
// Return old fid in case of temporary swap.
|
|
return prev_fid;
|
|
}
|
|
|
|
// The following functions halt BPMP to reduce power while sleeping.
|
|
// They are not as accurate as RTC at big values but they guarantee time+ delay.
|
|
void bpmp_usleep(u32 us)
|
|
{
|
|
u32 delay;
|
|
|
|
// Each iteration takes 1us.
|
|
while (us)
|
|
{
|
|
delay = (us > HALT_COP_MAX_CNT) ? HALT_COP_MAX_CNT : us;
|
|
us -= delay;
|
|
|
|
FLOW_CTLR(FLOW_CTLR_HALT_COP_EVENTS) = HALT_COP_WAIT_EVENT | HALT_COP_USEC | delay;
|
|
}
|
|
}
|
|
|
|
void bpmp_msleep(u32 ms)
|
|
{
|
|
u32 delay;
|
|
|
|
// Iteration time is variable. ~200 - 1000us.
|
|
while (ms)
|
|
{
|
|
delay = (ms > HALT_COP_MAX_CNT) ? HALT_COP_MAX_CNT : ms;
|
|
ms -= delay;
|
|
|
|
FLOW_CTLR(FLOW_CTLR_HALT_COP_EVENTS) = HALT_COP_WAIT_EVENT | HALT_COP_MSEC | delay;
|
|
}
|
|
}
|
|
|
|
void bpmp_halt()
|
|
{
|
|
FLOW_CTLR(FLOW_CTLR_HALT_COP_EVENTS) = HALT_COP_WAIT_EVENT | HALT_COP_JTAG;
|
|
}
|