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riscv: cpu: th1520: Initialize IOPMPs in SPL

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TH1520 SoC ships several IOPMPs protecting various on-chip peripherals.
They must be configured before accessing the peripherals. Let's
initialize them in SPL harts_early_init().

Signed-off-by: Yao Zi <ziyao@disroot.org>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
This commit is contained in:
Yao Zi
2025-05-16 03:05:22 +00:00
committed by Leo Yu-Chi Liang
parent e1bd3b4445
commit ce8f49ece2
2 changed files with 107 additions and 0 deletions
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65
arch/riscv/cpu/th1520/spl.c
View File

@@ -2,6 +2,8 @@
/*
* Copyright (C) 2025 Yao Zi <ziyao@disroot.org>
*/
#include <asm/arch/iopmp.h>
#include <asm/io.h>
#include <dm.h>
#include <linux/sizes.h>
#include <log.h>
@@ -9,6 +11,16 @@
DECLARE_GLOBAL_DATA_PTR;
#define TH1520_SUBSYS_CLK (void __iomem *)(0xffff011000 + 0x220)
#define TH1520_SUBSYS_CLK_VO_EN BIT(2)
#define TH1520_SUBSYS_CLK_VI_EN BIT(1)
#define TH1520_SUBSYS_CLK_DSP_EN BIT(0)
#define TH1520_SUBSYS_RST (void __iomem *)(0xffff015000 + 0x220)
#define TH1520_SUBSYS_RST_VP_N BIT(3)
#define TH1520_SUBSYS_RST_VO_N BIT(2)
#define TH1520_SUBSYS_RST_VI_N BIT(1)
#define TH1520_SUBSYS_RST_DSP_N BIT(0)
int spl_dram_init(void)
{
int ret;
@@ -29,3 +41,56 @@ int spl_dram_init(void)
return 0;
}
static void __iomem *th1520_iopmp_regs[] = {
TH1520_IOPMP_EMMC,
TH1520_IOPMP_SDIO0,
TH1520_IOPMP_SDIO1,
TH1520_IOPMP_USB0,
TH1520_IOPMP_AO,
TH1520_IOPMP_AUD,
TH1520_IOPMP_CHIP_DBG,
TH1520_IOPMP_EIP120I,
TH1520_IOPMP_EIP120II,
TH1520_IOPMP_EIP120III,
TH1520_IOPMP_ISP0,
TH1520_IOPMP_ISP1,
TH1520_IOPMP_DW200,
TH1520_IOPMP_VIPRE,
TH1520_IOPMP_VENC,
TH1520_IOPMP_VDEC,
TH1520_IOPMP_G2D,
TH1520_IOPMP_FCE,
TH1520_IOPMP_NPU,
TH1520_IOPMP_DPU0,
TH1520_IOPMP_DPU1,
TH1520_IOPMP_GPU,
TH1520_IOPMP_GMAC1,
TH1520_IOPMP_GMAC2,
TH1520_IOPMP_DMAC,
TH1520_IOPMP_TEE_DMAC,
TH1520_IOPMP_DSP0,
TH1520_IOPMP_DSP1,
};
void harts_early_init(void)
{
int i;
/*
* Set IOPMPs to the default attribute, allowing the application
* processor to access various peripherals. Subsystem clocks should be
* enabled and resets should be deasserted ahead of time, or the HART
* will hang when configuring corresponding IOPMP entries.
*/
setbits_le32(TH1520_SUBSYS_CLK, TH1520_SUBSYS_CLK_VO_EN |
TH1520_SUBSYS_CLK_VI_EN |
TH1520_SUBSYS_CLK_DSP_EN);
setbits_le32(TH1520_SUBSYS_RST, TH1520_SUBSYS_RST_VP_N |
TH1520_SUBSYS_RST_VO_N |
TH1520_SUBSYS_RST_VI_N |
TH1520_SUBSYS_RST_DSP_N);
for (i = 0; i < ARRAY_SIZE(th1520_iopmp_regs); i++)
writel(TH1520_IOPMP_DEFAULT_ATTR, th1520_iopmp_regs[i]);
}

42
arch/riscv/include/asm/arch-th1520/iopmp.h Normal file
View File

@@ -0,0 +1,42 @@
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2025 Yao Zi <ziyao@disroot.org>
*/
#ifndef _ASM_ARCH_TH1520_IOPMP_H_
#define _ASM_ARCH_TH1520_IOPMP_H_
#define TH1520_IOPMP_EMMC (void *)0xfffc0280c0
#define TH1520_IOPMP_SDIO0 (void *)0xfffc0290c0
#define TH1520_IOPMP_SDIO1 (void *)0xfffc02a0c0
#define TH1520_IOPMP_USB0 (void *)0xfffc02e0c0
#define TH1520_IOPMP_AO (void *)0xffffc210c0
#define TH1520_IOPMP_AUD (void *)0xffffc220c0
#define TH1520_IOPMP_CHIP_DBG (void *)0xffffc370c0
#define TH1520_IOPMP_EIP120I (void *)0xffff2200c0
#define TH1520_IOPMP_EIP120II (void *)0xffff2300c0
#define TH1520_IOPMP_EIP120III (void *)0xffff2400c0
#define TH1520_IOPMP_ISP0 (void *)0xfff40800c0
#define TH1520_IOPMP_ISP1 (void *)0xfff40810c0
#define TH1520_IOPMP_DW200 (void *)0xfff40820c0
#define TH1520_IOPMP_VIPRE (void *)0xfff40830c0
#define TH1520_IOPMP_VENC (void *)0xfffcc600c0
#define TH1520_IOPMP_VDEC (void *)0xfffcc610c0
#define TH1520_IOPMP_G2D (void *)0xfffcc620c0
#define TH1520_IOPMP_FCE (void *)0xfffcc630c0
#define TH1520_IOPMP_NPU (void *)0xffff01c0c0
#define TH1520_IOPMP_DPU0 (void *)0xffff5200c0
#define TH1520_IOPMP_DPU1 (void *)0xffff5210c0
#define TH1520_IOPMP_GPU (void *)0xffff5220c0
#define TH1520_IOPMP_GMAC1 (void *)0xfffc0010c0
#define TH1520_IOPMP_GMAC2 (void *)0xfffc0020c0
#define TH1520_IOPMP_DMAC (void *)0xffffc200c0
#define TH1520_IOPMP_TEE_DMAC (void *)0xffff2500c0
#define TH1520_IOPMP_DSP0 (void *)0xffff0580c0
#define TH1520_IOPMP_DSP1 (void *)0xffff0590c0
#define TH1520_IOPMP_AUDIO (void *)0xffffc220c0
#define TH1520_IOPMP_AUDIO0 (void *)0xffcb02e0c0
#define TH1520_IOPMP_AUDIO1 (void *)0xffcb02f0c0
#define TH1520_IOPMP_DEFAULT_ATTR 0xffffffff
#endif // _ASM_ARCH_TH1520_IOPMP_H_