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/*
* Keystone2: Architecture initialization
*
* (C) Copyright 2012-2014
* Texas Instruments Incorporated, <www.ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#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);
}
int arch_cpu_init(void)
{
chip_configuration_unlock();
icache_enable();
msmc_share_all_segments(KS2_MSMC_SEGMENT_TETRIS);
msmc_share_all_segments(KS2_MSMC_SEGMENT_NETCP);
msmc_share_all_segments(KS2_MSMC_SEGMENT_QM_PDSP);
msmc_share_all_segments(KS2_MSMC_SEGMENT_PCIE0);
/* Initialize the PCIe-0 to work as Root Complex */
config_pcie_mode(0, ROOTCOMPLEX);
#if defined(CONFIG_SOC_K2E) || defined(CONFIG_SOC_K2L)
msmc_share_all_segments(KS2_MSMC_SEGMENT_PCIE1);
/* 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.
*/
NS16550_init((NS16550_t)(CONFIG_SYS_NS16550_COM2),
CONFIG_SYS_NS16550_CLK / 16 / CONFIG_BAUDRATE);
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
}
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