[U-Boot] [PATCH v2 04/16] arm: socfpga: stratix10: Add pinmux support for Stratix10 SoC

Tan, Ley Foon ley.foon.tan at intel.com
Thu Jun 11 08:23:59 CEST 2020



> -----Original Message-----
> From: Heinrich Schuchardt <xypron.glpk at gmx.de>
> Sent: Sunday, June 7, 2020 7:07 AM
> To: Tan, Ley Foon <ley.foon.tan at intel.com>; u-boot at lists.denx.de
> Cc: Marek Vasut <marex at denx.de>; See, Chin Liang
> <chin.liang.see at intel.com>; Tom Rini <trini at konsulko.com>
> Subject: Re: [U-Boot] [PATCH v2 04/16] arm: socfpga: stratix10: Add pinmux
> support for Stratix10 SoC
> 
> On 5/18/18 4:05 PM, Ley Foon Tan wrote:
> > Add pinmux driver support for Stratix SoC
> >
> > Signed-off-by: Chin Liang See <chin.liang.see at intel.com>
> > Signed-off-by: Ley Foon Tan <ley.foon.tan at intel.com>
> > ---
> >  arch/arm/mach-socfpga/Makefile                     |    2 +
> >  .../arm/mach-socfpga/include/mach/system_manager.h |    5 +-
> >  .../mach-socfpga/include/mach/system_manager_s10.h |  176
> ++++++++++++++++++++
> >  arch/arm/mach-socfpga/system_manager_s10.c         |   91 ++++++++++
> >  arch/arm/mach-socfpga/wrap_pinmux_config_s10.c     |   56 ++++++
> >  5 files changed, 329 insertions(+), 1 deletions(-)  create mode
> > 100644 arch/arm/mach-socfpga/include/mach/system_manager_s10.h
> >  create mode 100644 arch/arm/mach-socfpga/system_manager_s10.c
> >  create mode 100644 arch/arm/mach-socfpga/wrap_pinmux_config_s10.c
> >
> > diff --git a/arch/arm/mach-socfpga/Makefile
> > b/arch/arm/mach-socfpga/Makefile index 69bdb84..61f5778 100644
> > --- a/arch/arm/mach-socfpga/Makefile
> > +++ b/arch/arm/mach-socfpga/Makefile
> > @@ -31,6 +31,8 @@ endif
> >  ifdef CONFIG_TARGET_SOCFPGA_STRATIX10
> >  obj-y	+= clock_manager_s10.o
> >  obj-y	+= reset_manager_s10.o
> > +obj-y	+= system_manager_s10.o
> > +obj-y	+= wrap_pinmux_config_s10.o
> >  obj-y	+= wrap_pll_config_s10.o
> >  endif
> >  ifdef CONFIG_SPL_BUILD
> > diff --git a/arch/arm/mach-socfpga/include/mach/system_manager.h
> > b/arch/arm/mach-socfpga/include/mach/system_manager.h
> > index fbe2a8b..7e76df7 100644
> > --- a/arch/arm/mach-socfpga/include/mach/system_manager.h
> > +++ b/arch/arm/mach-socfpga/include/mach/system_manager.h
> > @@ -6,6 +6,9 @@
> >  #ifndef _SYSTEM_MANAGER_H_
> >  #define _SYSTEM_MANAGER_H_
> >
> > +#if defined(CONFIG_TARGET_SOCFPGA_STRATIX10)
> > +#include <asm/arch/system_manager_s10.h> #else
> >  #define SYSMGR_ROMCODEGRP_CTRL_WARMRSTCFGPINMUX	BIT(0)
> >  #define SYSMGR_ROMCODEGRP_CTRL_WARMRSTCFGIO	BIT(1)
> >  #define SYSMGR_ECC_OCRAM_EN	BIT(0)
> > @@ -88,5 +91,5 @@
> >
> >  #define SYSMGR_GET_BOOTINFO_BSEL(bsel)		\
> >  		(((bsel) >> SYSMGR_BOOTINFO_BSEL_SHIFT) & 7)
> > -
> > +#endif
> >  #endif /* _SYSTEM_MANAGER_H_ */
> > diff --git a/arch/arm/mach-socfpga/include/mach/system_manager_s10.h
> > b/arch/arm/mach-socfpga/include/mach/system_manager_s10.h
> > new file mode 100644
> > index 0000000..813dff2
> > --- /dev/null
> > +++ b/arch/arm/mach-socfpga/include/mach/system_manager_s10.h
> > @@ -0,0 +1,176 @@
> > +/* SPDX-License-Identifier: GPL-2.0
> > + *
> > + * Copyright (C) 2016-2018 Intel Corporation <www.intel.com>
> > + *
> > + */
> > +
> > +#ifndef	_SYSTEM_MANAGER_S10_
> > +#define	_SYSTEM_MANAGER_S10_
> > +
> > +void sysmgr_pinmux_init(void);
> > +void populate_sysmgr_fpgaintf_module(void);
> > +void populate_sysmgr_pinmux(void);
> > +void sysmgr_pinmux_table_sel(const u32 **table, unsigned int
> > +*table_len); void sysmgr_pinmux_table_ctrl(const u32 **table,
> > +unsigned int *table_len); void sysmgr_pinmux_table_fpga(const u32
> > +**table, unsigned int *table_len); void
> > +sysmgr_pinmux_table_delay(const u32 **table, unsigned int
> > +*table_len);
> > +
> > +struct socfpga_system_manager {
> > +	/* System Manager Module */
> > +	u32	siliconid1;			/* 0x00 */
> > +	u32	siliconid2;
> > +	u32	wddbg;
> > +	u32	_pad_0xc;
> > +	u32	mpu_status;			/* 0x10 */
> > +	u32	mpu_ace;
> > +	u32	_pad_0x18_0x1c[2];
> > +	u32	dma;				/* 0x20 */
> > +	u32	dma_periph;
> > +	/* SDMMC Controller Group */
> > +	u32	sdmmcgrp_ctrl;
> > +	u32	sdmmcgrp_l3master;
> > +	/* NAND Flash Controller Register Group */
> > +	u32	nandgrp_bootstrap;		/* 0x30 */
> > +	u32	nandgrp_l3master;
> > +	/* USB Controller Group */
> > +	u32	usb0_l3master;
> > +	u32	usb1_l3master;
> > +	/* EMAC Group */
> > +	u32	emac_gbl;			/* 0x40 */
> > +	u32	emac0;
> > +	u32	emac1;
> > +	u32	emac2;
> > +	u32	emac0_ace;			/* 0x50 */
> > +	u32	emac1_ace;
> > +	u32	emac2_ace;
> > +	u32	nand_axuser;
> > +	u32	_pad_0x60_0x64[2];		/* 0x60 */
> > +	/* FPGA interface Group */
> > +	u32	fpgaintf_en_1;
> > +	u32	fpgaintf_en_2;
> > +	u32	fpgaintf_en_3;			/* 0x70 */
> > +	u32	dma_l3master;
> > +	u32	etr_l3master;
> > +	u32	_pad_0x7c;
> > +	u32	sec_ctrl_slt;			/* 0x80 */
> > +	u32	osc_trim;
> > +	u32	_pad_0x88_0x8c[2];
> > +	/* ECC Group */
> > +	u32	ecc_intmask_value;		/* 0x90 */
> > +	u32	ecc_intmask_set;
> > +	u32	ecc_intmask_clr;
> > +	u32	ecc_intstatus_serr;
> > +	u32	ecc_intstatus_derr;		/* 0xa0 */
> > +	u32	_pad_0xa4_0xac[3];
> > +	u32	noc_addr_remap;			/* 0xb0 */
> > +	u32	hmc_clk;
> > +	u32	io_pa_ctrl;
> > +	u32	_pad_0xbc;
> > +	/* NOC Group */
> > +	u32	noc_timeout;			/* 0xc0 */
> > +	u32	noc_idlereq_set;
> > +	u32	noc_idlereq_clr;
> > +	u32	noc_idlereq_value;
> > +	u32	noc_idleack;			/* 0xd0 */
> > +	u32	noc_idlestatus;
> > +	u32	fpga2soc_ctrl;
> > +	u32	fpga_config;
> > +	u32	iocsrclk_gate;			/* 0xe0 */
> > +	u32	gpo;
> > +	u32	gpi;
> > +	u32	_pad_0xec;
> > +	u32	mpu;				/* 0xf0 */
> > +	u32	sdm_hps_spare;
> > +	u32	hps_sdm_spare;
> > +	u32	_pad_0xfc_0x1fc[65];
> > +	/* Boot scratch register group */
> > +	u32	boot_scratch_cold0;		/* 0x200 */
> > +	u32	boot_scratch_cold1;
> > +	u32	boot_scratch_cold2;
> > +	u32	boot_scratch_cold3;
> > +	u32	boot_scratch_cold4;		/* 0x210 */
> > +	u32	boot_scratch_cold5;
> > +	u32	boot_scratch_cold6;
> > +	u32	boot_scratch_cold7;
> > +	u32	boot_scratch_cold8;		/* 0x220 */
> > +	u32	boot_scratch_cold9;
> > +	u32	_pad_0x228_0xffc[886];
> > +	/* Pin select and pin control group */
> > +	u32	pinsel0[40];			/* 0x1000 */
> > +	u32	_pad_0x10a0_0x10fc[24];
> > +	u32	pinsel40[8];
> > +	u32	_pad_0x1120_0x112c[4];
> > +	u32	ioctrl0[28];
> > +	u32	_pad_0x11a0_0x11fc[24];
> > +	u32	ioctrl28[20];
> > +	u32	_pad_0x1250_0x12fc[44];
> > +	/* Use FPGA mux */
> > +	u32	rgmii0usefpga;			/* 0x1300 */
> > +	u32	rgmii1usefpga;
> > +	u32	rgmii2usefpga;
> > +	u32	i2c0usefpga;
> > +	u32	i2c1usefpga;
> > +	u32	i2c_emac0_usefpga;
> > +	u32	i2c_emac1_usefpga;
> > +	u32	i2c_emac2_usefpga;
> > +	u32	nandusefpga;
> > +	u32	_pad_0x1324;
> > +	u32	spim0usefpga;
> > +	u32	spim1usefpga;
> > +	u32	spis0usefpga;
> > +	u32	spis1usefpga;
> > +	u32	uart0usefpga;
> > +	u32	uart1usefpga;
> > +	u32	mdio0usefpga;
> > +	u32	mdio1usefpga;
> > +	u32	mdio2usefpga;
> > +	u32	_pad_0x134c;
> > +	u32	jtagusefpga;
> > +	u32	sdmmcusefpga;
> > +	u32	hps_osc_clk;
> > +	u32	_pad_0x135c_0x13fc[41];
> > +	u32	iodelay0[40];
> > +	u32	_pad_0x14a0_0x14fc[24];
> > +	u32	iodelay40[8];
> > +
> > +};
> > +
> > +#define SYSMGR_ROMCODEGRP_CTRL_WARMRSTCFGPINMUX	BIT(0)
> > +#define SYSMGR_ROMCODEGRP_CTRL_WARMRSTCFGIO	BIT(1)
> > +#define SYSMGR_ECC_OCRAM_EN	BIT(0)
> > +#define SYSMGR_ECC_OCRAM_SERR	BIT(3)
> > +#define SYSMGR_ECC_OCRAM_DERR	BIT(4)
> > +#define SYSMGR_FPGAINTF_USEFPGA	0x1
> > +
> > +#define SYSMGR_FPGAINTF_NAND	BIT(4)
> > +#define SYSMGR_FPGAINTF_SDMMC	BIT(8)
> > +#define SYSMGR_FPGAINTF_SPIM0	BIT(16)
> > +#define SYSMGR_FPGAINTF_SPIM1	BIT(24)
> > +#define SYSMGR_FPGAINTF_EMAC0	(0x11 << 0)
> > +#define SYSMGR_FPGAINTF_EMAC1	(0x11 << 8)
> > +#define SYSMGR_FPGAINTF_EMAC2	(0x11 << 16)
> > +
> > +#define SYSMGR_SDMMC_SMPLSEL_SHIFT	4
> > +#define SYSMGR_SDMMC_DRVSEL_SHIFT	0
> > +
> > +/* EMAC Group Bit definitions */
> > +#define SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_GMII_MII	0x0
> > +#define SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RGMII		0x1
> > +#define SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RMII		0x2
> > +
> > +#define SYSMGR_EMACGRP_CTRL_PHYSEL0_LSB			0
> > +#define SYSMGR_EMACGRP_CTRL_PHYSEL1_LSB			2
> > +#define SYSMGR_EMACGRP_CTRL_PHYSEL_MASK			0x3
> > +
> > +#define SYSMGR_NOC_H2F_MSK		0x00000001
> > +#define SYSMGR_NOC_LWH2F_MSK		0x00000010
> > +#define SYSMGR_HMC_CLK_STATUS_MSK	0x00000001
> > +
> > +#define SYSMGR_DMA_IRQ_NS		0xFF000000
> > +#define SYSMGR_DMA_MGR_NS		0x00010000
> > +
> > +#define SYSMGR_DMAPERIPH_ALL_NS		0xFFFFFFFF
> > +
> > +#define SYSMGR_WDDBG_PAUSE_ALL_CPU	0x0F0F0F0F
> > +
> > +#endif /* _SYSTEM_MANAGER_S10_ */
> > diff --git a/arch/arm/mach-socfpga/system_manager_s10.c
> > b/arch/arm/mach-socfpga/system_manager_s10.c
> > new file mode 100644
> > index 0000000..122828c
> > --- /dev/null
> > +++ b/arch/arm/mach-socfpga/system_manager_s10.c
> > @@ -0,0 +1,91 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * Copyright (C) 2016-2018 Intel Corporation <www.intel.com>
> > + *
> > + */
> > +
> > +#include <common.h>
> > +#include <asm/io.h>
> > +#include <asm/arch/system_manager.h>
> > +
> > +DECLARE_GLOBAL_DATA_PTR;
> > +
> > +static struct socfpga_system_manager *sysmgr_regs =
> > +	(struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
> > +
> > +/*
> > + * Configure all the pin muxes
> > + */
> > +void sysmgr_pinmux_init(void)
> > +{
> > +	populate_sysmgr_pinmux();
> > +	populate_sysmgr_fpgaintf_module();
> > +}
> > +
> > +/*
> > + * Populate the value for SYSMGR.FPGAINTF.MODULE based on pinmux
> setting.
> > + * The value is not wrote to SYSMGR.FPGAINTF.MODULE but
> > + * CONFIG_SYSMGR_ISWGRP_HANDOFF.
> > + */
> > +void populate_sysmgr_fpgaintf_module(void)
> > +{
> > +	u32 handoff_val = 0;
> > +
> > +	/* Enable the signal for those HPS peripherals that use FPGA. */
> > +	if (readl(&sysmgr_regs->nandusefpga) ==
> SYSMGR_FPGAINTF_USEFPGA)
> > +		handoff_val |= SYSMGR_FPGAINTF_NAND;
> > +	if (readl(&sysmgr_regs->sdmmcusefpga) ==
> SYSMGR_FPGAINTF_USEFPGA)
> > +		handoff_val |= SYSMGR_FPGAINTF_SDMMC;
> > +	if (readl(&sysmgr_regs->spim0usefpga) ==
> SYSMGR_FPGAINTF_USEFPGA)
> > +		handoff_val |= SYSMGR_FPGAINTF_SPIM0;
> > +	if (readl(&sysmgr_regs->spim1usefpga) ==
> SYSMGR_FPGAINTF_USEFPGA)
> > +		handoff_val |= SYSMGR_FPGAINTF_SPIM1;
> > +	writel(handoff_val, &sysmgr_regs->fpgaintf_en_2);
> > +
> > +	handoff_val = 0;
> > +	if (readl(&sysmgr_regs->rgmii0usefpga) ==
> SYSMGR_FPGAINTF_USEFPGA)
> > +		handoff_val |= SYSMGR_FPGAINTF_EMAC0;
> > +	if (readl(&sysmgr_regs->rgmii1usefpga) ==
> SYSMGR_FPGAINTF_USEFPGA)
> > +		handoff_val |= SYSMGR_FPGAINTF_EMAC1;
> > +	if (readl(&sysmgr_regs->rgmii2usefpga) ==
> SYSMGR_FPGAINTF_USEFPGA)
> > +		handoff_val |= SYSMGR_FPGAINTF_EMAC2;
> > +	writel(handoff_val, &sysmgr_regs->fpgaintf_en_3); }
> > +
> > +/*
> > + * Configure all the pin muxes
> > + */
> > +void populate_sysmgr_pinmux(void)
> > +{
> > +	const u32 *sys_mgr_table_u32;
> > +	unsigned int len, i;
> > +
> > +	/* setup the pin sel */
> > +	sysmgr_pinmux_table_sel(&sys_mgr_table_u32, &len);
> > +	for (i = 0; i < len; i = i + 2) {
> > +		writel(sys_mgr_table_u32[i + 1],
> > +		       sys_mgr_table_u32[i] + (u8 *)&sysmgr_regs->pinsel0[0]);
> > +	}
> > +
> > +	/* setup the pin ctrl */
> > +	sysmgr_pinmux_table_ctrl(&sys_mgr_table_u32, &len);
> > +	for (i = 0; i < len; i = i + 2) {
> > +		writel(sys_mgr_table_u32[i + 1],
> > +		       sys_mgr_table_u32[i] + (u8 *)&sysmgr_regs->ioctrl0[0]);
> > +	}
> > +
> > +	/* setup the fpga use */
> > +	sysmgr_pinmux_table_fpga(&sys_mgr_table_u32, &len);
> > +	for (i = 0; i < len; i = i + 2) {
> > +		writel(sys_mgr_table_u32[i + 1],
> > +		       sys_mgr_table_u32[i] +
> > +		       (u8 *)&sysmgr_regs->rgmii0usefpga);
> > +	}
> > +
> > +	/* setup the IO delay */
> > +	sysmgr_pinmux_table_delay(&sys_mgr_table_u32, &len);
> > +	for (i = 0; i < len; i = i + 2) {
> > +		writel(sys_mgr_table_u32[i + 1],
> > +		       sys_mgr_table_u32[i] + (u8 *)&sysmgr_regs-
> >iodelay0[0]);
> > +	}
> > +}
> > diff --git a/arch/arm/mach-socfpga/wrap_pinmux_config_s10.c
> > b/arch/arm/mach-socfpga/wrap_pinmux_config_s10.c
> > new file mode 100644
> > index 0000000..0b497ec
> > --- /dev/null
> > +++ b/arch/arm/mach-socfpga/wrap_pinmux_config_s10.c
> > @@ -0,0 +1,56 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * Copyright (C) 2016-2018 Intel Corporation <www.intel.com>
> > + *
> > + */
> > +
> > +#include <common.h>
> > +#include <errno.h>
> > +#include <asm/io.h>
> > +#include <asm/arch/handoff_s10.h>
> > +
> > +static void sysmgr_pinmux_handoff_read(void *handoff_address,
> > +				       const u32 **table,
> > +				       unsigned int *table_len)
> > +{
> > +	unsigned int handoff_entry = (swab32(readl(handoff_address +
> > +					S10_HANDOFF_OFFSET_LENGTH)) -
> > +					S10_HANDOFF_OFFSET_DATA) /
> > +					sizeof(unsigned int);
> > +	unsigned int handoff_chunk[handoff_entry], temp, i;
> > +
> > +	if (swab32(readl(S10_HANDOFF_MUX)) ==
> S10_HANDOFF_MAGIC_MUX) {
> > +		/* using handoff from Quartus tools if exists */
> > +		for (i = 0; i < handoff_entry; i++) {
> > +			temp = readl(handoff_address +
> > +				     S10_HANDOFF_OFFSET_DATA + (i * 4));
> > +			handoff_chunk[i] = swab32(temp);
> > +		}
> > +		*table = handoff_chunk;
> 
> Here you are passing a variable that only exists on the stack to the caller.
> Shouldn't you either define handoff_chunk as static or malloc it?
> 
> Indicated by CppCheck as
> [arch/arm/mach-socfpga/wrap_pinmux_config_s10.c:29]:
> (error) Address of local auto-variable assigned to a function parameter.
> 
> Best regards
> 
> Heinrich
Hi Heinrich

We are aware of this issue, we will work on the fix.
Thanks.

Regards
Ley Foon


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