u-boot/arch/arm/mach-socfpga/misc_arria10.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

256 lines
5.9 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2016-2017 Intel Corporation
*/
#include <altera.h>
#include <common.h>
#include <errno.h>
#include <fdtdec.h>
#include <miiphy.h>
#include <netdev.h>
#include <ns16550.h>
#include <watchdog.h>
#include <asm/arch/misc.h>
#include <asm/arch/pinmux.h>
#include <asm/arch/reset_manager.h>
#include <asm/arch/sdram_arria10.h>
#include <asm/arch/system_manager.h>
#include <asm/arch/nic301.h>
#include <asm/io.h>
#include <asm/pl310.h>
#define PINMUX_UART0_TX_SHARED_IO_OFFSET_Q1_3 0x08
#define PINMUX_UART0_TX_SHARED_IO_OFFSET_Q2_11 0x58
#define PINMUX_UART0_TX_SHARED_IO_OFFSET_Q3_3 0x68
#define PINMUX_UART1_TX_SHARED_IO_OFFSET_Q1_7 0x18
#define PINMUX_UART1_TX_SHARED_IO_OFFSET_Q3_7 0x78
#define PINMUX_UART1_TX_SHARED_IO_OFFSET_Q4_3 0x98
#if defined(CONFIG_SPL_BUILD)
static struct pl310_regs *const pl310 =
(struct pl310_regs *)CONFIG_SYS_PL310_BASE;
static const struct socfpga_noc_fw_ocram *noc_fw_ocram_base =
(void *)SOCFPGA_SDR_FIREWALL_OCRAM_ADDRESS;
#endif
static struct socfpga_system_manager *sysmgr_regs =
(struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
/*
* DesignWare Ethernet initialization
*/
#ifdef CONFIG_ETH_DESIGNWARE
void dwmac_deassert_reset(const unsigned int of_reset_id,
const u32 phymode)
{
u32 reset;
if (of_reset_id == EMAC0_RESET) {
reset = SOCFPGA_RESET(EMAC0);
} else if (of_reset_id == EMAC1_RESET) {
reset = SOCFPGA_RESET(EMAC1);
} else if (of_reset_id == EMAC2_RESET) {
reset = SOCFPGA_RESET(EMAC2);
} else {
printf("GMAC: Invalid reset ID (%i)!\n", of_reset_id);
return;
}
clrsetbits_le32(&sysmgr_regs->emac[of_reset_id - EMAC0_RESET],
SYSMGR_EMACGRP_CTRL_PHYSEL_MASK,
phymode);
/* Release the EMAC controller from reset */
socfpga_per_reset(reset, 0);
}
#endif
#if defined(CONFIG_SPL_BUILD)
/*
+ * This function initializes security policies to be consistent across
+ * all logic units in the Arria 10.
+ *
+ * The idea is to set all security policies to be normal, nonsecure
+ * for all units.
+ */
static void initialize_security_policies(void)
{
/* Put OCRAM in non-secure */
writel(0x003f0000, &noc_fw_ocram_base->region0);
writel(0x1, &noc_fw_ocram_base->enable);
}
int arch_early_init_r(void)
{
initialize_security_policies();
/* Configure the L2 controller to make SDRAM start at 0 */
writel(0x1, &pl310->pl310_addr_filter_start);
/* assert reset to all except L4WD0 and L4TIMER0 */
socfpga_per_reset_all();
/* configuring the clock based on handoff */
/* TODO: Add call to cm_basic_init() */
/* Add device descriptor to FPGA device table */
socfpga_fpga_add();
return 0;
}
#else
int arch_early_init_r(void)
{
return 0;
}
#endif
/*
* This function looking the 1st encounter UART peripheral,
* and then return its offset of the dedicated/shared IO pin
* mux. offset value (zero and above).
*/
static int find_peripheral_uart(const void *blob,
int child, const char *node_name)
{
int len;
fdt_addr_t base_addr = 0;
fdt_size_t size;
const u32 *cell;
u32 value, offset = 0;
base_addr = fdtdec_get_addr_size(blob, child, "reg", &size);
if (base_addr != FDT_ADDR_T_NONE) {
cell = fdt_getprop(blob, child, "pinctrl-single,pins",
&len);
if (cell != NULL) {
for (; len > 0; len -= (2 * sizeof(u32))) {
offset = fdt32_to_cpu(*cell++);
value = fdt32_to_cpu(*cell++);
/* Found UART peripheral. */
if (value == PINMUX_UART)
return offset;
}
}
}
return -EINVAL;
}
/*
* This function looks up the 1st encounter UART peripheral,
* and then return its offset of the dedicated/shared IO pin
* mux. UART peripheral is found if the offset is not in negative
* value.
*/
static int is_peripheral_uart_true(const void *blob,
int node, const char *child_name)
{
int child, len;
const char *node_name;
child = fdt_first_subnode(blob, node);
if (child < 0)
return -EINVAL;
node_name = fdt_get_name(blob, child, &len);
while (node_name) {
if (!strcmp(child_name, node_name))
return find_peripheral_uart(blob, child, node_name);
child = fdt_next_subnode(blob, child);
if (child < 0)
break;
node_name = fdt_get_name(blob, child, &len);
}
return -1;
}
/*
* This function looking the 1st encounter UART dedicated IO peripheral,
* and then return based address of the 1st encounter UART dedicated
* IO peripheral.
*/
unsigned int dedicated_uart_com_port(const void *blob)
{
int node;
node = fdtdec_next_compatible(blob, 0,
COMPAT_ALTERA_SOCFPGA_PINCTRL_SINGLE);
if (node < 0)
return 0;
if (is_peripheral_uart_true(blob, node, "dedicated") >= 0)
return SOCFPGA_UART1_ADDRESS;
return 0;
}
/*
* This function looking the 1st encounter UART shared IO peripheral, and then
* return based address of the 1st encounter UART shared IO peripheral.
*/
unsigned int shared_uart_com_port(const void *blob)
{
int node, ret;
node = fdtdec_next_compatible(blob, 0,
COMPAT_ALTERA_SOCFPGA_PINCTRL_SINGLE);
if (node < 0)
return 0;
ret = is_peripheral_uart_true(blob, node, "shared");
if (ret == PINMUX_UART0_TX_SHARED_IO_OFFSET_Q1_3 ||
ret == PINMUX_UART0_TX_SHARED_IO_OFFSET_Q2_11 ||
ret == PINMUX_UART0_TX_SHARED_IO_OFFSET_Q3_3)
return SOCFPGA_UART0_ADDRESS;
else if (ret == PINMUX_UART1_TX_SHARED_IO_OFFSET_Q1_7 ||
ret == PINMUX_UART1_TX_SHARED_IO_OFFSET_Q3_7 ||
ret == PINMUX_UART1_TX_SHARED_IO_OFFSET_Q4_3)
return SOCFPGA_UART1_ADDRESS;
return 0;
}
/*
* This function looking the 1st encounter UART peripheral, and then return
* base address of the 1st encounter UART peripheral.
*/
unsigned int uart_com_port(const void *blob)
{
unsigned int ret;
ret = dedicated_uart_com_port(blob);
if (ret)
return ret;
return shared_uart_com_port(blob);
}
/*
* Print CPU information
*/
#if defined(CONFIG_DISPLAY_CPUINFO)
int print_cpuinfo(void)
{
const u32 bsel =
SYSMGR_GET_BOOTINFO_BSEL(readl(&sysmgr_regs->bootinfo));
puts("CPU: Altera SoCFPGA Arria 10\n");
printf("BOOT: %s\n", bsel_str[bsel].name);
return 0;
}
#endif
#ifdef CONFIG_ARCH_MISC_INIT
int arch_misc_init(void)
{
return 0;
}
#endif