mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-23 10:28:51 +09:00
![Siva Durga Prasad Paladugu](/assets/img/avatar_default.png)
This patch adds new config option which is used for reserving a specific memory for MMU Table and in this case we are using TCM for that purpose. Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
112 lines
2.5 KiB
C
112 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* (C) Copyright 2019 Xilinx, Inc.
|
|
* Siva Durga Prasad <siva.durga.paladugu@xilinx.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/hardware.h>
|
|
#include <asm/arch/sys_proto.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
#define HALT 0
|
|
#define RELEASE 1
|
|
|
|
#define VERSAL_RPU_CFG_CPU_HALT_MASK 0x01
|
|
#define VERSAL_RPU_GLBL_CTRL_SPLIT_LOCK_MASK 0x08
|
|
#define VERSAL_RPU_GLBL_CTRL_TCM_COMB_MASK 0x40
|
|
#define VERSAL_RPU_GLBL_CTRL_SLCLAMP_MASK 0x10
|
|
|
|
#define VERSAL_CRLAPB_RST_LPD_AMBA_RST_MASK 0x04
|
|
#define VERSAL_CRLAPB_RST_LPD_R50_RST_MASK 0x01
|
|
#define VERSAL_CRLAPB_RST_LPD_R51_RST_MASK 0x02
|
|
#define VERSAL_CRL_RST_CPU_R5_RESET_PGE_MASK 0x10
|
|
#define VERSAL_CRLAPB_CPU_R5_CTRL_CLKACT_MASK 0x1000000
|
|
|
|
void set_r5_halt_mode(u8 halt, u8 mode)
|
|
{
|
|
u32 tmp;
|
|
|
|
tmp = readl(&rpu_base->rpu0_cfg);
|
|
if (halt == HALT)
|
|
tmp &= ~VERSAL_RPU_CFG_CPU_HALT_MASK;
|
|
else
|
|
tmp |= VERSAL_RPU_CFG_CPU_HALT_MASK;
|
|
writel(tmp, &rpu_base->rpu0_cfg);
|
|
|
|
if (mode == TCM_LOCK) {
|
|
tmp = readl(&rpu_base->rpu1_cfg);
|
|
if (halt == HALT)
|
|
tmp &= ~VERSAL_RPU_CFG_CPU_HALT_MASK;
|
|
else
|
|
tmp |= VERSAL_RPU_CFG_CPU_HALT_MASK;
|
|
writel(tmp, &rpu_base->rpu1_cfg);
|
|
}
|
|
}
|
|
|
|
void set_r5_tcm_mode(u8 mode)
|
|
{
|
|
u32 tmp;
|
|
|
|
tmp = readl(&rpu_base->rpu_glbl_ctrl);
|
|
if (mode == TCM_LOCK) {
|
|
tmp &= ~VERSAL_RPU_GLBL_CTRL_SPLIT_LOCK_MASK;
|
|
tmp |= VERSAL_RPU_GLBL_CTRL_TCM_COMB_MASK |
|
|
VERSAL_RPU_GLBL_CTRL_SLCLAMP_MASK;
|
|
} else {
|
|
tmp |= VERSAL_RPU_GLBL_CTRL_SPLIT_LOCK_MASK;
|
|
tmp &= ~(VERSAL_RPU_GLBL_CTRL_TCM_COMB_MASK |
|
|
VERSAL_RPU_GLBL_CTRL_SLCLAMP_MASK);
|
|
}
|
|
|
|
writel(tmp, &rpu_base->rpu_glbl_ctrl);
|
|
}
|
|
|
|
void release_r5_reset(u8 mode)
|
|
{
|
|
u32 tmp;
|
|
|
|
tmp = readl(&crlapb_base->rst_cpu_r5);
|
|
tmp &= ~(VERSAL_CRLAPB_RST_LPD_AMBA_RST_MASK |
|
|
VERSAL_CRLAPB_RST_LPD_R50_RST_MASK |
|
|
VERSAL_CRL_RST_CPU_R5_RESET_PGE_MASK);
|
|
|
|
if (mode == TCM_LOCK)
|
|
tmp &= ~VERSAL_CRLAPB_RST_LPD_R51_RST_MASK;
|
|
|
|
writel(tmp, &crlapb_base->rst_cpu_r5);
|
|
}
|
|
|
|
void enable_clock_r5(void)
|
|
{
|
|
u32 tmp;
|
|
|
|
tmp = readl(&crlapb_base->cpu_r5_ctrl);
|
|
tmp |= VERSAL_CRLAPB_CPU_R5_CTRL_CLKACT_MASK;
|
|
writel(tmp, &crlapb_base->cpu_r5_ctrl);
|
|
}
|
|
|
|
void initialize_tcm(bool mode)
|
|
{
|
|
if (!mode) {
|
|
set_r5_tcm_mode(TCM_LOCK);
|
|
set_r5_halt_mode(HALT, TCM_LOCK);
|
|
enable_clock_r5();
|
|
release_r5_reset(TCM_LOCK);
|
|
} else {
|
|
set_r5_tcm_mode(TCM_SPLIT);
|
|
set_r5_halt_mode(HALT, TCM_SPLIT);
|
|
enable_clock_r5();
|
|
release_r5_reset(TCM_SPLIT);
|
|
}
|
|
}
|
|
|
|
void tcm_init(u8 mode)
|
|
{
|
|
puts("WARNING: Initializing TCM overwrites TCM content\n");
|
|
initialize_tcm(mode);
|
|
memset((void *)VERSAL_TCM_BASE_ADDR, 0, VERSAL_TCM_SIZE);
|
|
}
|