u-boot/arch/arm/mach-keystone/init.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

259 lines
6 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Keystone2: Architecture initialization
*
* (C) Copyright 2012-2014
* Texas Instruments Incorporated, <www.ti.com>
*/
#include <common.h>
#include <ns16550.h>
#include <asm/io.h>
#include <asm/arch/msmc.h>
#include <asm/arch/clock.h>
#include <asm/arch/hardware.h>
#include <asm/arch/psc_defs.h>
#define MAX_PCI_PORTS 2
enum pci_mode {
ENDPOINT,
LEGACY_ENDPOINT,
ROOTCOMPLEX,
};
#define DEVCFG_MODE_MASK (BIT(2) | BIT(1))
#define DEVCFG_MODE_SHIFT 1
void chip_configuration_unlock(void)
{
__raw_writel(KS2_KICK0_MAGIC, KS2_KICK0);
__raw_writel(KS2_KICK1_MAGIC, KS2_KICK1);
}
#ifdef CONFIG_SOC_K2L
void osr_init(void)
{
u32 i;
u32 j;
u32 val;
u32 base = KS2_OSR_CFG_BASE;
u32 ecc_ctrl[KS2_OSR_NUM_RAM_BANKS];
/* Enable the OSR clock domain */
psc_enable_module(KS2_LPSC_OSR);
/* Disable OSR ECC check for all the ram banks */
for (i = 0; i < KS2_OSR_NUM_RAM_BANKS; i++) {
val = i | KS2_OSR_ECC_VEC_TRIG_RD |
(KS2_OSR_ECC_CTRL << KS2_OSR_ECC_VEC_RD_ADDR_SH);
writel(val , base + KS2_OSR_ECC_VEC);
/**
* wait till read is done.
* Print should be added after earlyprintk support is added.
*/
for (j = 0; j < 10000; j++) {
val = readl(base + KS2_OSR_ECC_VEC);
if (val & KS2_OSR_ECC_VEC_RD_DONE)
break;
}
ecc_ctrl[i] = readl(base + KS2_OSR_ECC_CTRL) ^
KS2_OSR_ECC_CTRL_CHK;
writel(ecc_ctrl[i], KS2_MSMC_DATA_BASE + i * 4);
writel(ecc_ctrl[i], base + KS2_OSR_ECC_CTRL);
}
/* Reset OSR memory to all zeros */
for (i = 0; i < KS2_OSR_SIZE; i += 4)
writel(0, KS2_OSR_DATA_BASE + i);
/* Enable OSR ECC check for all the ram banks */
for (i = 0; i < KS2_OSR_NUM_RAM_BANKS; i++)
writel(ecc_ctrl[i] |
KS2_OSR_ECC_CTRL_CHK, base + KS2_OSR_ECC_CTRL);
}
#endif
/* Function to set up PCIe mode */
static void config_pcie_mode(int pcie_port, enum pci_mode mode)
{
u32 val = __raw_readl(KS2_DEVCFG);
if (pcie_port >= MAX_PCI_PORTS)
return;
/**
* each pci port has two bits for mode and it starts at
* bit 1. So use port number to get the right bit position.
*/
pcie_port <<= 1;
val &= ~(DEVCFG_MODE_MASK << pcie_port);
val |= ((mode << DEVCFG_MODE_SHIFT) << pcie_port);
__raw_writel(val, KS2_DEVCFG);
}
static void msmc_k2hkle_common_setup(void)
{
msmc_share_all_segments(KS2_MSMC_SEGMENT_C6X_0);
msmc_share_all_segments(K2HKLE_MSMC_SEGMENT_ARM);
msmc_share_all_segments(K2HKLE_MSMC_SEGMENT_NETCP);
msmc_share_all_segments(K2HKLE_MSMC_SEGMENT_QM_PDSP);
msmc_share_all_segments(K2HKLE_MSMC_SEGMENT_PCIE0);
msmc_share_all_segments(KS2_MSMC_SEGMENT_DEBUG);
}
static void msmc_k2hk_setup(void)
{
msmc_share_all_segments(KS2_MSMC_SEGMENT_C6X_1);
msmc_share_all_segments(KS2_MSMC_SEGMENT_C6X_2);
msmc_share_all_segments(KS2_MSMC_SEGMENT_C6X_3);
msmc_share_all_segments(KS2_MSMC_SEGMENT_C6X_4);
msmc_share_all_segments(KS2_MSMC_SEGMENT_C6X_5);
msmc_share_all_segments(KS2_MSMC_SEGMENT_C6X_6);
msmc_share_all_segments(KS2_MSMC_SEGMENT_C6X_7);
msmc_share_all_segments(K2HKE_MSMC_SEGMENT_HYPERLINK);
}
static inline void msmc_k2l_setup(void)
{
msmc_share_all_segments(KS2_MSMC_SEGMENT_C6X_1);
msmc_share_all_segments(KS2_MSMC_SEGMENT_C6X_2);
msmc_share_all_segments(KS2_MSMC_SEGMENT_C6X_3);
msmc_share_all_segments(K2L_MSMC_SEGMENT_PCIE1);
}
static inline void msmc_k2e_setup(void)
{
msmc_share_all_segments(K2E_MSMC_SEGMENT_PCIE1);
msmc_share_all_segments(K2HKE_MSMC_SEGMENT_HYPERLINK);
msmc_share_all_segments(K2E_MSMC_SEGMENT_TSIP);
}
static void msmc_k2g_setup(void)
{
msmc_share_all_segments(KS2_MSMC_SEGMENT_C6X_0);
msmc_share_all_segments(K2G_MSMC_SEGMENT_ARM);
msmc_share_all_segments(K2G_MSMC_SEGMENT_ICSS0);
msmc_share_all_segments(K2G_MSMC_SEGMENT_ICSS1);
msmc_share_all_segments(K2G_MSMC_SEGMENT_NSS);
msmc_share_all_segments(K2G_MSMC_SEGMENT_PCIE);
msmc_share_all_segments(K2G_MSMC_SEGMENT_USB);
msmc_share_all_segments(K2G_MSMC_SEGMENT_MLB);
msmc_share_all_segments(K2G_MSMC_SEGMENT_PMMC);
msmc_share_all_segments(K2G_MSMC_SEGMENT_DSS);
msmc_share_all_segments(K2G_MSMC_SEGMENT_MMC);
msmc_share_all_segments(KS2_MSMC_SEGMENT_DEBUG);
}
int arch_cpu_init(void)
{
chip_configuration_unlock();
icache_enable();
if (cpu_is_k2g()) {
msmc_k2g_setup();
} else {
msmc_k2hkle_common_setup();
if (cpu_is_k2e())
msmc_k2e_setup();
else if (cpu_is_k2l())
msmc_k2l_setup();
else
msmc_k2hk_setup();
}
/* Initialize the PCIe-0 to work as Root Complex */
config_pcie_mode(0, ROOTCOMPLEX);
#if defined(CONFIG_SOC_K2E) || defined(CONFIG_SOC_K2L)
/* Initialize the PCIe-1 to work as Root Complex */
config_pcie_mode(1, ROOTCOMPLEX);
#endif
#ifdef CONFIG_SOC_K2L
osr_init();
#endif
/*
* just initialise the COM2 port so that TI specific
* UART register PWREMU_MGMT is initialized. Linux UART
* driver doesn't handle this.
*/
#ifndef CONFIG_DM_SERIAL
NS16550_init((NS16550_t)(CONFIG_SYS_NS16550_COM2),
CONFIG_SYS_NS16550_CLK / 16 / CONFIG_BAUDRATE);
#endif
return 0;
}
void reset_cpu(ulong addr)
{
volatile u32 *rstctrl = (volatile u32 *)(KS2_RSTCTRL);
u32 tmp;
tmp = *rstctrl & KS2_RSTCTRL_MASK;
*rstctrl = tmp | KS2_RSTCTRL_KEY;
*rstctrl &= KS2_RSTCTRL_SWRST;
for (;;)
;
}
void enable_caches(void)
{
#ifndef CONFIG_SYS_DCACHE_OFF
/* Enable D-cache. I-cache is already enabled in start.S */
dcache_enable();
#endif
}
#if defined(CONFIG_DISPLAY_CPUINFO)
int print_cpuinfo(void)
{
u16 cpu = get_part_number();
u8 rev = cpu_revision();
puts("CPU: ");
switch (cpu) {
case CPU_66AK2Hx:
puts("66AK2Hx SR");
break;
case CPU_66AK2Lx:
puts("66AK2Lx SR");
break;
case CPU_66AK2Ex:
puts("66AK2Ex SR");
break;
case CPU_66AK2Gx:
puts("66AK2Gx");
#ifdef CONFIG_SOC_K2G
{
int speed = get_max_arm_speed(speeds);
if (speed == SPD1000)
puts("-100 ");
else if (speed == SPD600)
puts("-60 ");
else
puts("-xx ");
}
#endif
puts("SR");
break;
default:
puts("Unknown\n");
}
if (rev == 2)
puts("2.0\n");
else if (rev == 1)
puts("1.1\n");
else if (rev == 0)
puts("1.0\n");
else if (rev == 8)
puts("1.0\n");
return 0;
}
#endif