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sunxi: Add sun4i support

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Add support for the Allwinner A10 SoC also known as the Allwinner sun4i family,
and add the Cubieboard board which uses the A10 SoC.

Compared to sun7 only the DRAM controller is a bit different:
-Controller reset bits are inverted, but only for Rev. A
-Different hpcr values
-No MBUS on sun4i
-Various other initialization changes

Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
This commit is contained in:
Hans de Goede 2014-06-09 11:36:57 +02:00 committed by Ian Campbell
parent c7e79dec85
commit 745325a97d
7 changed files with 143 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/cpu/armv7/sunxi/Makefile
View File

@ -11,6 +11,7 @@ obj-y += timer.o
obj-y += board.o
obj-y += clock.o
obj-y += pinmux.o
obj-$(CONFIG_SUN4I) += clock_sun4i.o
obj-$(CONFIG_SUN7I) += clock_sun4i.o
ifndef CONFIG_SPL_BUILD
@ -18,6 +19,7 @@ obj-y += cpu_info.o
endif
ifdef CONFIG_SPL_BUILD
obj-$(CONFIG_SUN4I) += dram.o
obj-$(CONFIG_SUN7I) += dram.o
ifdef CONFIG_SPL_FEL
obj-y += start.o

7
arch/arm/cpu/armv7/sunxi/cpu_info.c
View File

@ -13,7 +13,14 @@
#ifdef CONFIG_DISPLAY_CPUINFO
int print_cpuinfo(void)
{
#ifdef CONFIG_SUN4I
puts("CPU: Allwinner A10 (SUN4I)\n");
#elif defined CONFIG_SUN7I
puts("CPU: Allwinner A20 (SUN7I)\n");
#else
#warning Please update cpu_info.c with correct CPU information
puts("CPU: SUNXI Family\n");
#endif
return 0;
}
#endif

81
arch/arm/cpu/armv7/sunxi/dram.c
View File

@ -53,16 +53,37 @@ static void mctl_ddr3_reset(void)
struct sunxi_dram_reg *dram =
(struct sunxi_dram_reg *)SUNXI_DRAMC_BASE;
clrbits_le32(&dram->mcr, DRAM_MCR_RESET);
udelay(2);
setbits_le32(&dram->mcr, DRAM_MCR_RESET);
#ifdef CONFIG_SUN4I
struct sunxi_timer_reg *timer =
(struct sunxi_timer_reg *)SUNXI_TIMER_BASE;
u32 reg_val;
writel(0, &timer->cpu_cfg);
reg_val = readl(&timer->cpu_cfg);
if ((reg_val & CPU_CFG_CHIP_VER_MASK) !=
CPU_CFG_CHIP_VER(CPU_CFG_CHIP_REV_A)) {
setbits_le32(&dram->mcr, DRAM_MCR_RESET);
udelay(2);
clrbits_le32(&dram->mcr, DRAM_MCR_RESET);
} else
#endif
{
clrbits_le32(&dram->mcr, DRAM_MCR_RESET);
udelay(2);
setbits_le32(&dram->mcr, DRAM_MCR_RESET);
}
}
static void mctl_set_drive(void)
{
struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE;
#ifdef CONFIG_SUN7I
clrsetbits_le32(&dram->mcr, DRAM_MCR_MODE_NORM(0x3) | (0x3 << 28),
#else
clrsetbits_le32(&dram->mcr, DRAM_MCR_MODE_NORM(0x3),
#endif
DRAM_MCR_MODE_EN(0x3) |
0xffc);
}
@ -134,6 +155,16 @@ static void mctl_enable_dllx(u32 phase)
}
static u32 hpcr_value[32] = {
#ifdef CONFIG_SUN4I
0x0301, 0x0301, 0x0301, 0x0301,
0x0301, 0x0301, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0x1031, 0x1031, 0x0735, 0x5031,
0x1035, 0x0731, 0x1031, 0x0735,
0x1035, 0x1031, 0x0731, 0x1035,
0x1031, 0x0301, 0x0301, 0x0731
#endif
#ifdef CONFIG_SUN7I
0x0301, 0x0301, 0x0301, 0x0301,
0x0301, 0x0301, 0x0301, 0x0301,
@ -223,22 +254,32 @@ static void mctl_setup_dram_clock(u32 clk)
clrbits_le32(&ccm->ahb_gate0, CCM_AHB_GATE_GPS);
#endif
#if defined(CONFIG_SUN5I) || defined(CONFIG_SUN7I)
/* setup MBUS clock */
reg_val = CCM_MBUS_CTRL_GATE |
CCM_MBUS_CTRL_CLK_SRC(CCM_MBUS_CTRL_CLK_SRC_PLL6) |
CCM_MBUS_CTRL_N(CCM_MBUS_CTRL_N_X(2)) |
CCM_MBUS_CTRL_M(CCM_MBUS_CTRL_M_X(2));
writel(reg_val, &ccm->mbus_clk_cfg);
#endif
/*
* open DRAMC AHB & DLL register clock
* close it first
*/
#if defined(CONFIG_SUN5I) || defined(CONFIG_SUN7I)
clrbits_le32(&ccm->ahb_gate0, CCM_AHB_GATE_SDRAM | CCM_AHB_GATE_DLL);
#else
clrbits_le32(&ccm->ahb_gate0, CCM_AHB_GATE_SDRAM);
#endif
udelay(22);
/* then open it */
#if defined(CONFIG_SUN5I) || defined(CONFIG_SUN7I)
setbits_le32(&ccm->ahb_gate0, CCM_AHB_GATE_SDRAM | CCM_AHB_GATE_DLL);
#else
setbits_le32(&ccm->ahb_gate0, CCM_AHB_GATE_SDRAM);
#endif
udelay(22);
}
@ -385,6 +426,13 @@ static void dramc_clock_output_en(u32 on)
else
clrbits_le32(&dram->mcr, DRAM_MCR_DCLK_OUT);
#endif
#ifdef CONFIG_SUN4I
struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
if (on)
setbits_le32(&ccm->dram_clk_cfg, CCM_DRAM_CTRL_DCLK_OUT);
else
clrbits_le32(&ccm->dram_clk_cfg, CCM_DRAM_CTRL_DCLK_OUT);
#endif
}
static const u16 tRFC_table[2][6] = {
@ -421,11 +469,19 @@ unsigned long dramc_init(struct dram_para *para)
mctl_setup_dram_clock(para->clock);
/* reset external DRAM */
#ifndef CONFIG_SUN7I
mctl_ddr3_reset();
#endif
mctl_set_drive();
/* dram clock off */
dramc_clock_output_en(0);
#ifdef CONFIG_SUN4I
/* select dram controller 1 */
writel(DRAM_CSEL_MAGIC, &dram->csel);
#endif
mctl_itm_disable();
mctl_enable_dll0(para->tpr3);
@ -482,6 +538,9 @@ unsigned long dramc_init(struct dram_para *para)
mctl_ddr3_reset();
else
setbits_le32(&dram->mcr, DRAM_MCR_RESET);
#else
/* dram clock on */
dramc_clock_output_en(1);
#endif
udelay(1);
@ -490,6 +549,22 @@ unsigned long dramc_init(struct dram_para *para)
mctl_enable_dllx(para->tpr3);
#ifdef CONFIG_SUN4I
/* set odt impedance divide ratio */
reg_val = ((para->zq) >> 8) & 0xfffff;
reg_val |= ((para->zq) & 0xff) << 20;
reg_val |= (para->zq) & 0xf0000000;
writel(reg_val, &dram->zqcr0);
#endif
#ifdef CONFIG_SUN4I
/* set I/O configure register */
reg_val = 0x00cc0000;
reg_val |= (para->odt_en) & 0x3;
reg_val |= ((para->odt_en) & 0x3) << 30;
writel(reg_val, &dram->iocr);
#endif
/* set refresh period */
dramc_set_autorefresh_cycle(para->clock, para->type - 2, density);

1
board/sunxi/Makefile
View File

@ -10,4 +10,5 @@
#
obj-y += board.o
obj-$(CONFIG_SUNXI_GMAC) += gmac.o
obj-$(CONFIG_CUBIEBOARD) += dram_cubieboard.o
obj-$(CONFIG_CUBIETRUCK) += dram_cubietruck.o

31
board/sunxi/dram_cubieboard.c Normal file
View File

@ -0,0 +1,31 @@
/* this file is generated, don't edit it yourself */
#include <common.h>
#include <asm/arch/dram.h>
static struct dram_para dram_para = {
.clock = 480,
.type = 3,
.rank_num = 1,
.density = 4096,
.io_width = 16,
.bus_width = 32,
.cas = 6,
.zq = 123,
.odt_en = 0,
.size = 1024,
.tpr0 = 0x30926692,
.tpr1 = 0x1090,
.tpr2 = 0x1a0c8,
.tpr3 = 0,
.tpr4 = 0,
.tpr5 = 0,
.emr1 = 0,
.emr2 = 0,
.emr3 = 0,
};
unsigned long sunxi_dram_init(void)
{
return dramc_init(&dram_para);
}

1
boards.cfg
View File

@ -377,6 +377,7 @@ Active arm armv7 rmobile renesas lager
Active arm armv7 s5pc1xx samsung goni s5p_goni - Robert Baldyga <r.baldyga@samsung.com>
Active arm armv7 s5pc1xx samsung smdkc100 smdkc100 - Minkyu Kang <mk7.kang@samsung.com>
Active arm armv7 socfpga altera socfpga socfpga_cyclone5 - -
Active arm armv7 sunxi - sunxi Cubieboard sun4i:CUBIEBOARD,SPL Hans de Goede <hdegoede@redhat.com>
Active arm armv7 sunxi - sunxi Cubietruck sun7i:CUBIETRUCK,SPL,SUNXI_GMAC,RGMII -
Active arm armv7 sunxi - sunxi Cubietruck_FEL sun7i:CUBIETRUCK,SPL_FEL,SUNXI_GMAC,RGMII -
Active arm armv7 u8500 st-ericsson snowball snowball - Mathieu Poirier <mathieu.poirier@linaro.org>

23
include/configs/sun4i.h Normal file
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@ -0,0 +1,23 @@
/*
* (C) Copyright 2012-2013 Henrik Nordstrom <henrik@henriknordstrom.net>
*
* Configuration settings for the Allwinner A10 (sun4i) CPU
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __CONFIG_H
#define __CONFIG_H
/*
* A10 specific configuration
*/
#define CONFIG_SUN4I /* sun4i SoC generation */
#define CONFIG_SYS_PROMPT "sun4i# "
/*
* Include common sunxi configuration where most the settings are
*/
#include <configs/sunxi-common.h>
#endif /* __CONFIG_H */