u-boot/arch/arm/mach-socfpga/misc.c
Marek Vasut dafd5792a8 arm: socfpga: Nuke useless include
The dwmmc.h include was forgotten during the migration of dwmmc
probing to DM. Since the shiny DM is in place now, remove this
relic of the past.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: Chin Liang See <clsee@altera.com>
2016-04-10 17:19:49 +02:00

471 lines
12 KiB
C

/*
* Copyright (C) 2012 Altera Corporation <www.altera.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <errno.h>
#include <fdtdec.h>
#include <libfdt.h>
#include <altera.h>
#include <miiphy.h>
#include <netdev.h>
#include <watchdog.h>
#include <asm/arch/reset_manager.h>
#include <asm/arch/scan_manager.h>
#include <asm/arch/system_manager.h>
#include <asm/arch/nic301.h>
#include <asm/arch/scu.h>
#include <asm/pl310.h>
#include <dt-bindings/reset/altr,rst-mgr.h>
DECLARE_GLOBAL_DATA_PTR;
static struct pl310_regs *const pl310 =
(struct pl310_regs *)CONFIG_SYS_PL310_BASE;
static struct socfpga_system_manager *sysmgr_regs =
(struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
static struct socfpga_reset_manager *reset_manager_base =
(struct socfpga_reset_manager *)SOCFPGA_RSTMGR_ADDRESS;
static struct nic301_registers *nic301_regs =
(struct nic301_registers *)SOCFPGA_L3REGS_ADDRESS;
static struct scu_registers *scu_regs =
(struct scu_registers *)SOCFPGA_MPUSCU_ADDRESS;
int dram_init(void)
{
gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
return 0;
}
void enable_caches(void)
{
#ifndef CONFIG_SYS_ICACHE_OFF
icache_enable();
#endif
#ifndef CONFIG_SYS_DCACHE_OFF
dcache_enable();
#endif
}
void v7_outer_cache_enable(void)
{
/* Disable the L2 cache */
clrbits_le32(&pl310->pl310_ctrl, L2X0_CTRL_EN);
/* enable BRESP, instruction and data prefetch, full line of zeroes */
setbits_le32(&pl310->pl310_aux_ctrl,
L310_AUX_CTRL_DATA_PREFETCH_MASK |
L310_AUX_CTRL_INST_PREFETCH_MASK |
L310_SHARED_ATT_OVERRIDE_ENABLE);
/* Enable the L2 cache */
setbits_le32(&pl310->pl310_ctrl, L2X0_CTRL_EN);
}
void v7_outer_cache_disable(void)
{
/* Disable the L2 cache */
clrbits_le32(&pl310->pl310_ctrl, L2X0_CTRL_EN);
}
/*
* DesignWare Ethernet initialization
*/
#ifdef CONFIG_ETH_DESIGNWARE
static void dwmac_deassert_reset(const unsigned int of_reset_id,
const u32 phymode)
{
u32 physhift, reset;
if (of_reset_id == EMAC0_RESET) {
physhift = SYSMGR_EMACGRP_CTRL_PHYSEL0_LSB;
reset = SOCFPGA_RESET(EMAC0);
} else if (of_reset_id == EMAC1_RESET) {
physhift = SYSMGR_EMACGRP_CTRL_PHYSEL1_LSB;
reset = SOCFPGA_RESET(EMAC1);
} else {
printf("GMAC: Invalid reset ID (%i)!\n", of_reset_id);
return;
}
/* Clearing emac0 PHY interface select to 0 */
clrbits_le32(&sysmgr_regs->emacgrp_ctrl,
SYSMGR_EMACGRP_CTRL_PHYSEL_MASK << physhift);
/* configure to PHY interface select choosed */
setbits_le32(&sysmgr_regs->emacgrp_ctrl,
phymode << physhift);
/* Release the EMAC controller from reset */
socfpga_per_reset(reset, 0);
}
static u32 dwmac_phymode_to_modereg(const char *phymode, u32 *modereg)
{
if (!phymode)
return -EINVAL;
if (!strcmp(phymode, "mii") || !strcmp(phymode, "gmii")) {
*modereg = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_GMII_MII;
return 0;
}
if (!strcmp(phymode, "rgmii")) {
*modereg = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RGMII;
return 0;
}
if (!strcmp(phymode, "rmii")) {
*modereg = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RMII;
return 0;
}
return -EINVAL;
}
static int socfpga_eth_reset(void)
{
const void *fdt = gd->fdt_blob;
struct fdtdec_phandle_args args;
const char *phy_mode;
u32 phy_modereg;
int nodes[2]; /* Max. two GMACs */
int ret, count;
int i, node;
/* Put both GMACs into RESET state. */
socfpga_per_reset(SOCFPGA_RESET(EMAC0), 1);
socfpga_per_reset(SOCFPGA_RESET(EMAC1), 1);
count = fdtdec_find_aliases_for_id(fdt, "ethernet",
COMPAT_ALTERA_SOCFPGA_DWMAC,
nodes, ARRAY_SIZE(nodes));
for (i = 0; i < count; i++) {
node = nodes[i];
if (node <= 0)
continue;
ret = fdtdec_parse_phandle_with_args(fdt, node, "resets",
"#reset-cells", 1, 0,
&args);
if (ret || (args.args_count != 1)) {
debug("GMAC%i: Failed to parse DT 'resets'!\n", i);
continue;
}
phy_mode = fdt_getprop(fdt, node, "phy-mode", NULL);
ret = dwmac_phymode_to_modereg(phy_mode, &phy_modereg);
if (ret) {
debug("GMAC%i: Failed to parse DT 'phy-mode'!\n", i);
continue;
}
dwmac_deassert_reset(args.args[0], phy_modereg);
}
return 0;
}
#else
static int socfpga_eth_reset(void)
{
return 0
};
#endif
struct {
const char *mode;
const char *name;
} bsel_str[] = {
{ "rsvd", "Reserved", },
{ "fpga", "FPGA (HPS2FPGA Bridge)", },
{ "nand", "NAND Flash (1.8V)", },
{ "nand", "NAND Flash (3.0V)", },
{ "sd", "SD/MMC External Transceiver (1.8V)", },
{ "sd", "SD/MMC Internal Transceiver (3.0V)", },
{ "qspi", "QSPI Flash (1.8V)", },
{ "qspi", "QSPI Flash (3.0V)", },
};
static const struct {
const u16 pn;
const char *name;
const char *var;
} const socfpga_fpga_model[] = {
/* Cyclone V E */
{ 0x2b15, "Cyclone V, E/A2", "cv_e_a2" },
{ 0x2b05, "Cyclone V, E/A4", "cv_e_a4" },
{ 0x2b22, "Cyclone V, E/A5", "cv_e_a5" },
{ 0x2b13, "Cyclone V, E/A7", "cv_e_a7" },
{ 0x2b14, "Cyclone V, E/A9", "cv_e_a9" },
/* Cyclone V GX/GT */
{ 0x2b01, "Cyclone V, GX/C3", "cv_gx_c3" },
{ 0x2b12, "Cyclone V, GX/C4", "cv_gx_c4" },
{ 0x2b02, "Cyclone V, GX/C5 or GT/D5", "cv_gx_c5" },
{ 0x2b03, "Cyclone V, GX/C7 or GT/D7", "cv_gx_c7" },
{ 0x2b04, "Cyclone V, GX/C9 or GT/D9", "cv_gx_c9" },
/* Cyclone V SE/SX/ST */
{ 0x2d11, "Cyclone V, SE/A2 or SX/C2", "cv_se_a2" },
{ 0x2d01, "Cyclone V, SE/A4 or SX/C4", "cv_se_a4" },
{ 0x2d12, "Cyclone V, SE/A5 or SX/C5 or ST/D5", "cv_se_a5" },
{ 0x2d02, "Cyclone V, SE/A6 or SX/C6 or ST/D6", "cv_se_a6" },
/* Arria V */
{ 0x2d03, "Arria V, D5", "av_d5" },
};
static int socfpga_fpga_id(const bool print_id)
{
const u32 altera_mi = 0x6e;
const u32 id = scan_mgr_get_fpga_id();
const u32 lsb = id & 0x00000001;
const u32 mi = (id >> 1) & 0x000007ff;
const u32 pn = (id >> 12) & 0x0000ffff;
const u32 version = (id >> 28) & 0x0000000f;
int i;
if ((mi != altera_mi) || (lsb != 1)) {
printf("FPGA: Not Altera chip ID\n");
return -EINVAL;
}
for (i = 0; i < ARRAY_SIZE(socfpga_fpga_model); i++)
if (pn == socfpga_fpga_model[i].pn)
break;
if (i == ARRAY_SIZE(socfpga_fpga_model)) {
printf("FPGA: Unknown Altera chip, ID 0x%08x\n", id);
return -EINVAL;
}
if (print_id)
printf("FPGA: Altera %s, version 0x%01x\n",
socfpga_fpga_model[i].name, version);
return i;
}
/*
* Print CPU information
*/
#if defined(CONFIG_DISPLAY_CPUINFO)
int print_cpuinfo(void)
{
const u32 bsel = readl(&sysmgr_regs->bootinfo) & 0x7;
puts("CPU: Altera SoCFPGA Platform\n");
socfpga_fpga_id(1);
printf("BOOT: %s\n", bsel_str[bsel].name);
return 0;
}
#endif
#ifdef CONFIG_ARCH_MISC_INIT
int arch_misc_init(void)
{
const u32 bsel = readl(&sysmgr_regs->bootinfo) & 0x7;
const int fpga_id = socfpga_fpga_id(0);
setenv("bootmode", bsel_str[bsel].mode);
if (fpga_id >= 0)
setenv("fpgatype", socfpga_fpga_model[fpga_id].var);
return socfpga_eth_reset();
}
#endif
#if defined(CONFIG_SYS_CONSOLE_IS_IN_ENV) && \
defined(CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE)
int overwrite_console(void)
{
return 0;
}
#endif
#ifdef CONFIG_FPGA
/*
* FPGA programming support for SoC FPGA Cyclone V
*/
static Altera_desc altera_fpga[] = {
{
/* Family */
Altera_SoCFPGA,
/* Interface type */
fast_passive_parallel,
/* No limitation as additional data will be ignored */
-1,
/* No device function table */
NULL,
/* Base interface address specified in driver */
NULL,
/* No cookie implementation */
0
},
};
/* add device descriptor to FPGA device table */
static void socfpga_fpga_add(void)
{
int i;
fpga_init();
for (i = 0; i < ARRAY_SIZE(altera_fpga); i++)
fpga_add(fpga_altera, &altera_fpga[i]);
}
#else
static inline void socfpga_fpga_add(void) {}
#endif
int arch_cpu_init(void)
{
#ifdef CONFIG_HW_WATCHDOG
/*
* In case the watchdog is enabled, make sure to (re-)configure it
* so that the defined timeout is valid. Otherwise the SPL (Perloader)
* timeout value is still active which might too short for Linux
* booting.
*/
hw_watchdog_init();
#else
/*
* If the HW watchdog is NOT enabled, make sure it is not running,
* for example because it was enabled in the preloader. This might
* trigger a watchdog-triggered reboot of Linux kernel later.
* Toggle watchdog reset, so watchdog in not running state.
*/
socfpga_per_reset(SOCFPGA_RESET(L4WD0), 1);
socfpga_per_reset(SOCFPGA_RESET(L4WD0), 0);
#endif
return 0;
}
/*
* Convert all NIC-301 AMBA slaves from secure to non-secure
*/
static void socfpga_nic301_slave_ns(void)
{
writel(0x1, &nic301_regs->lwhps2fpgaregs);
writel(0x1, &nic301_regs->hps2fpgaregs);
writel(0x1, &nic301_regs->acp);
writel(0x1, &nic301_regs->rom);
writel(0x1, &nic301_regs->ocram);
writel(0x1, &nic301_regs->sdrdata);
}
static uint32_t iswgrp_handoff[8];
int arch_early_init_r(void)
{
int i;
/*
* Write magic value into magic register to unlock support for
* issuing warm reset. The ancient kernel code expects this
* value to be written into the register by the bootloader, so
* to support that old code, we write it here instead of in the
* reset_cpu() function just before reseting the CPU.
*/
writel(0xae9efebc, &sysmgr_regs->romcodegrp_warmramgrp_enable);
for (i = 0; i < 8; i++) /* Cache initial SW setting regs */
iswgrp_handoff[i] = readl(&sysmgr_regs->iswgrp_handoff[i]);
socfpga_bridges_reset(1);
socfpga_nic301_slave_ns();
/*
* Private components security:
* U-Boot : configure private timer, global timer and cpu component
* access as non secure for kernel stage (as required by Linux)
*/
setbits_le32(&scu_regs->sacr, 0xfff);
/* Configure the L2 controller to make SDRAM start at 0 */
#ifdef CONFIG_SOCFPGA_VIRTUAL_TARGET
writel(0x2, &nic301_regs->remap);
#else
writel(0x1, &nic301_regs->remap); /* remap.mpuzero */
writel(0x1, &pl310->pl310_addr_filter_start);
#endif
/* Add device descriptor to FPGA device table */
socfpga_fpga_add();
#ifdef CONFIG_DESIGNWARE_SPI
/* Get Designware SPI controller out of reset */
socfpga_per_reset(SOCFPGA_RESET(SPIM0), 0);
socfpga_per_reset(SOCFPGA_RESET(SPIM1), 0);
#endif
#ifdef CONFIG_NAND_DENALI
socfpga_per_reset(SOCFPGA_RESET(NAND), 0);
#endif
return 0;
}
static void socfpga_sdram_apply_static_cfg(void)
{
const uint32_t staticcfg = SOCFPGA_SDR_ADDRESS + 0x505c;
const uint32_t applymask = 0x8;
uint32_t val = readl(staticcfg) | applymask;
/*
* SDRAM staticcfg register specific:
* When applying the register setting, the CPU must not access
* SDRAM. Luckily for us, we can abuse i-cache here to help us
* circumvent the SDRAM access issue. The idea is to make sure
* that the code is in one full i-cache line by branching past
* it and back. Once it is in the i-cache, we execute the core
* of the code and apply the register settings.
*
* The code below uses 7 instructions, while the Cortex-A9 has
* 32-byte cachelines, thus the limit is 8 instructions total.
*/
asm volatile(
".align 5 \n"
" b 2f \n"
"1: str %0, [%1] \n"
" dsb \n"
" isb \n"
" b 3f \n"
"2: b 1b \n"
"3: nop \n"
: : "r"(val), "r"(staticcfg) : "memory", "cc");
}
int do_bridge(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
if (argc != 2)
return CMD_RET_USAGE;
argv++;
switch (*argv[0]) {
case 'e': /* Enable */
writel(iswgrp_handoff[2], &sysmgr_regs->fpgaintfgrp_module);
socfpga_sdram_apply_static_cfg();
writel(iswgrp_handoff[3], SOCFPGA_SDR_ADDRESS + 0x5080);
writel(iswgrp_handoff[0], &reset_manager_base->brg_mod_reset);
writel(iswgrp_handoff[1], &nic301_regs->remap);
break;
case 'd': /* Disable */
writel(0, &sysmgr_regs->fpgaintfgrp_module);
writel(0, SOCFPGA_SDR_ADDRESS + 0x5080);
socfpga_sdram_apply_static_cfg();
writel(0, &reset_manager_base->brg_mod_reset);
writel(1, &nic301_regs->remap);
break;
default:
return CMD_RET_USAGE;
}
return 0;
}
U_BOOT_CMD(
bridge, 2, 1, do_bridge,
"SoCFPGA HPS FPGA bridge control",
"enable - Enable HPS-to-FPGA, FPGA-to-HPS, LWHPS-to-FPGA bridges\n"
"bridge disable - Enable HPS-to-FPGA, FPGA-to-HPS, LWHPS-to-FPGA bridges\n"
""
);