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barebox/arch/arm/boards/kindle3/kindle3.c

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/*
* (C) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
* (C) 2016 Alexander Kurz <akurz@blala.de>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that 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.
*
* Board support for the Amazon Kindle 3rd generation
*/
#include <common.h>
#include <command.h>
#include <driver.h>
#include <init.h>
#include <bootsource.h>
#include <io.h>
#include <environment.h>
#include <generated/mach-types.h>
#include <asm/armlinux.h>
#include <asm/mmu.h>
#include <asm/setup.h>
#include <mach/imx35-regs.h>
#include <mach/imx-pll.h>
#include <mach/iomux-mx35.h>
#include <mach/devices-imx35.h>
#include <mach/generic.h>
#include <usb/fsl_usb2.h>
#include <mach/usb.h>
#include <mach/spi.h>
#include <spi/spi.h>
#include <magicvar.h>
/* 16 byte id for serial number */
#define ATAG_SERIAL16 0x5441000a
/* 16 byte id for a board revision */
#define ATAG_REVISION16 0x5441000b
struct char16_tag {
char data[16];
};
static struct tag *setup_16char_tag(struct tag *params, uint32_t tag,
const char *value)
{
struct char16_tag *target;
target = ((void *) params) + sizeof(struct tag_header);
params->hdr.tag = tag;
params->hdr.size = tag_size(char16_tag);
memcpy(target->data, value, sizeof target->data);
return tag_next(params);
}
static const char *get_env_16char_tag(const char *tag)
{
static const char *default16 = "0000000000000000";
const char *value;
value = getenv(tag);
if (!value) {
printf("env var %s not found, using default\n", tag);
return default16;
}
if (strlen(value) != 16) {
printf("env var %s: expecting 16 characters, using default\n",
tag);
return default16;
}
printf("%s: %s\n", tag, value);
return value;
}
BAREBOX_MAGICVAR_NAMED(global_atags_serial16, global.board.serial16,
"Pass the kindle Serial as vendor-specific ATAG to linux");
BAREBOX_MAGICVAR_NAMED(global_atags_revision16, global.board.revision16,
"Pass the kindle BoardId as vendor-specific ATAG to linux");
/* The Kindle3 Kernel expects two custom ATAGs, ATAG_REVISION16 describing
* the board and ATAG_SERIAL16 to identify the individual device.
*/
struct tag *kindle3_append_atags(struct tag *params)
{
params = setup_16char_tag(params, ATAG_SERIAL16,
get_env_16char_tag("global.board.serial16"));
params = setup_16char_tag(params, ATAG_REVISION16,
get_env_16char_tag("global.board.revision16"));
return params;
}
static struct fsl_usb2_platform_data kindle3_usb_info = {
.operating_mode = FSL_USB2_DR_DEVICE,
.phy_mode = FSL_USB2_PHY_UTMI,
};
/* SPI master devices. */
static int kindle3_spi0_internal_chipselect[] = {
IMX_GPIO_NR(1, 18),
};
static struct spi_imx_master kindle3_spi0_info = {
.chipselect = kindle3_spi0_internal_chipselect,
.num_chipselect = ARRAY_SIZE(kindle3_spi0_internal_chipselect),
};
static const struct spi_board_info kindle3_spi_board_info[] = {
{
.name = "mc13892",
.bus_num = 0,
.chip_select = 0,
.mode = SPI_CS_HIGH,
},
};
static int kindle3_mmu_init(void)
{
l2x0_init((void __iomem *)0x30000000, 0x00030024, 0x00000000);
return 0;
}
postmmu_initcall(kindle3_mmu_init);
static int kindle3_devices_init(void)
{
imx35_add_mmc0(NULL);
if (IS_ENABLED(CONFIG_USB_GADGET)) {
unsigned int tmp;
/* Workaround ENGcm09152 */
tmp = readl(MX35_USB_OTG_BASE_ADDR + 0x608);
writel(tmp | (1 << 23), MX35_USB_OTG_BASE_ADDR + 0x608);
add_generic_device("fsl-udc", DEVICE_ID_DYNAMIC, NULL,
MX35_USB_OTG_BASE_ADDR, 0x200,
IORESOURCE_MEM, &kindle3_usb_info);
}
/* The kindle3 related linux patch published by amazon bluntly
* renamed MACH_MX35_3DS to MACH_MX35_LUIGI
*/
armlinux_set_architecture(MACH_TYPE_MX35_3DS);
/* Compatibility ATAGs for original kernel */
armlinux_set_atag_appender(kindle3_append_atags);
return 0;
}
device_initcall(kindle3_devices_init);
static iomux_v3_cfg_t kindle3_pads[] = {
/* UART1 */
MX35_PAD_RXD1__UART1_RXD_MUX,
MX35_PAD_TXD1__UART1_TXD_MUX,
/* eMMC */
MX35_PAD_SD1_CMD__ESDHC1_CMD,
MX35_PAD_SD1_CLK__ESDHC1_CLK,
MX35_PAD_SD1_DATA0__ESDHC1_DAT0,
MX35_PAD_SD1_DATA1__ESDHC1_DAT1,
MX35_PAD_SD1_DATA2__ESDHC1_DAT2,
MX35_PAD_SD1_DATA3__ESDHC1_DAT3,
/* USB */
MX35_PAD_USBOTG_PWR__USB_TOP_USBOTG_PWR,
MX35_PAD_USBOTG_OC__USB_TOP_USBOTG_OC,
/* I2C 1+2 */
MX35_PAD_I2C1_CLK__I2C1_SCL,
MX35_PAD_I2C1_DAT__I2C1_SDA,
MX35_PAD_I2C2_CLK__I2C2_SCL,
MX35_PAD_I2C2_DAT__I2C2_SDA,
/* SPI */
MX35_PAD_CSPI1_SS0__GPIO1_18,
MX35_PAD_CSPI1_SCLK__CSPI1_SCLK,
MX35_PAD_CSPI1_MOSI__CSPI1_MOSI,
MX35_PAD_CSPI1_MISO__CSPI1_MISO,
MX35_PAD_CSPI1_SPI_RDY__CSPI1_RDY,
/* fiveway device: up, down, left, right, select */
MX35_PAD_ATA_DATA14__GPIO2_27,
MX35_PAD_ATA_DATA15__GPIO2_28,
MX35_PAD_TX5_RX0__GPIO1_10,
MX35_PAD_ATA_BUFF_EN__GPIO2_30,
IOMUX_PAD(0x728, 0x2c4, 5, 0x8c8, 1,
PAD_CTL_PUS_100K_UP | PAD_CTL_HYS | PAD_CTL_DVS),
/* Volume keys: up, down */
MX35_PAD_SCKR__GPIO1_4,
MX35_PAD_FSR__GPIO1_5,
};
static int kindle3_part_init(void)
{
devfs_add_partition("disk0", SZ_1K, 2 * SZ_1K,
DEVFS_PARTITION_FIXED, "disk0.imx_header");
devfs_add_partition("disk0", 4 * SZ_1K, (192 - 1) * SZ_1K,
DEVFS_PARTITION_FIXED, "disk0.self");
devfs_add_partition("disk0", (192 + 3) * SZ_1K, SZ_64K,
DEVFS_PARTITION_FIXED, "env0");
devfs_add_partition("disk0", (256 + 3) * SZ_1K, SZ_1K,
DEVFS_PARTITION_FIXED, "disk0.serial");
devfs_add_partition("disk0", (256 + 4) * SZ_1K, 3407872,
DEVFS_PARTITION_FIXED, "disk0.kernel");
devfs_add_partition("disk0", 3674112, SZ_256K,
DEVFS_PARTITION_FIXED, "disk0.waveform");
return 0;
}
late_initcall(kindle3_part_init);
static int imx35_console_init(void)
{
mxc_iomux_v3_setup_multiple_pads(kindle3_pads,
ARRAY_SIZE(kindle3_pads));
barebox_set_model("Kindle3");
barebox_set_hostname("kindle3");
imx35_add_uart0();
spi_register_board_info(kindle3_spi_board_info,
ARRAY_SIZE(kindle3_spi_board_info));
imx35_add_spi0(&kindle3_spi0_info);
imx35_add_i2c0(NULL);
imx35_add_i2c1(NULL);
return 0;
}
console_initcall(imx35_console_init);
static int kindle3_core_setup(void)
{
u32 tmp;
/* AIPS setup - Only setup MPROTx registers.
* The PACR default values are good.
*/
/*
* Set all MPROTx to be non-bufferable, trusted for R/W,
* not forced to user-mode.
*/
writel(0x77777777, MX35_AIPS1_BASE_ADDR);
writel(0x77777777, MX35_AIPS1_BASE_ADDR + 0x4);
writel(0x77777777, MX35_AIPS2_BASE_ADDR);
writel(0x77777777, MX35_AIPS2_BASE_ADDR + 0x4);
/*
* Clear the on and off peripheral modules Supervisor Protect bit
* for SDMA to access them. Did not change the AIPS control registers
* (offset 0x20) access type
*/
writel(0x0, MX35_AIPS1_BASE_ADDR + 0x40);
writel(0x0, MX35_AIPS1_BASE_ADDR + 0x44);
writel(0x0, MX35_AIPS1_BASE_ADDR + 0x48);
writel(0x0, MX35_AIPS1_BASE_ADDR + 0x4C);
tmp = readl(MX35_AIPS1_BASE_ADDR + 0x50);
tmp &= 0x00FFFFFF;
writel(tmp, MX35_AIPS1_BASE_ADDR + 0x50);
writel(0x0, MX35_AIPS2_BASE_ADDR + 0x40);
writel(0x0, MX35_AIPS2_BASE_ADDR + 0x44);
writel(0x0, MX35_AIPS2_BASE_ADDR + 0x48);
writel(0x0, MX35_AIPS2_BASE_ADDR + 0x4C);
tmp = readl(MX35_AIPS2_BASE_ADDR + 0x50);
tmp &= 0x00FFFFFF;
writel(tmp, MX35_AIPS2_BASE_ADDR + 0x50);
/* MAX (Multi-Layer AHB Crossbar Switch) setup */
/* MPR - priority is M4 > M2 > M3 > M5 > M0 > M1 */
#define MAX_PARAM1 0x00302154
writel(MAX_PARAM1, MX35_MAX_BASE_ADDR + 0x0); /* for S0 */
writel(MAX_PARAM1, MX35_MAX_BASE_ADDR + 0x100); /* for S1 */
writel(MAX_PARAM1, MX35_MAX_BASE_ADDR + 0x200); /* for S2 */
writel(MAX_PARAM1, MX35_MAX_BASE_ADDR + 0x300); /* for S3 */
writel(MAX_PARAM1, MX35_MAX_BASE_ADDR + 0x400); /* for S4 */
/* SGPCR - always park on last master */
writel(0x10, MX35_MAX_BASE_ADDR + 0x10); /* for S0 */
writel(0x10, MX35_MAX_BASE_ADDR + 0x110); /* for S1 */
writel(0x10, MX35_MAX_BASE_ADDR + 0x210); /* for S2 */
writel(0x10, MX35_MAX_BASE_ADDR + 0x310); /* for S3 */
writel(0x10, MX35_MAX_BASE_ADDR + 0x410); /* for S4 */
/* MGPCR - restore default values */
writel(0x0, MX35_MAX_BASE_ADDR + 0x800); /* for M0 */
writel(0x0, MX35_MAX_BASE_ADDR + 0x900); /* for M1 */
writel(0x0, MX35_MAX_BASE_ADDR + 0xa00); /* for M2 */
writel(0x0, MX35_MAX_BASE_ADDR + 0xb00); /* for M3 */
writel(0x0, MX35_MAX_BASE_ADDR + 0xc00); /* for M4 */
writel(0x0, MX35_MAX_BASE_ADDR + 0xd00); /* for M5 */
/*
* M3IF Control Register (M3IFCTL)
* MRRP[0] = L2CC0 not on priority list (0 << 0) = 0x00000000
* MRRP[1] = MAX1 not on priority list (0 << 0) = 0x00000000
* MRRP[2] = L2CC1 not on priority list (0 << 0) = 0x00000000
* MRRP[3] = USB not on priority list (0 << 0) = 0x00000000
* MRRP[4] = SDMA not on priority list (0 << 0) = 0x00000000
* MRRP[5] = GPU not on priority list (0 << 0) = 0x00000000
* MRRP[6] = IPU1 on priority list (1 << 6) = 0x00000040
* MRRP[7] = IPU2 not on priority list (0 << 0) = 0x00000000
* ------------
* 0x00000040
*/
writel(0x40, MX35_M3IF_BASE_ADDR);
return 0;
}
core_initcall(kindle3_core_setup);
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