diff options
Diffstat (limited to 'roms/u-boot/arch/arm/mach-keystone/init.c')
| -rw-r--r-- | roms/u-boot/arch/arm/mach-keystone/init.c | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/mach-keystone/init.c b/roms/u-boot/arch/arm/mach-keystone/init.c new file mode 100644 index 000000000..5b95f6050 --- /dev/null +++ b/roms/u-boot/arch/arm/mach-keystone/init.c @@ -0,0 +1,263 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Keystone2: Architecture initialization + * + * (C) Copyright 2012-2014 + * Texas Instruments Incorporated, <www.ti.com> + */ + +#include <common.h> +#include <cpu_func.h> +#include <init.h> +#include <ns16550.h> +#include <asm/cache.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> +#include <linux/bitops.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((struct ns16550 *)(CONFIG_SYS_NS16550_COM2), + CONFIG_SYS_NS16550_CLK / 16 / CONFIG_BAUDRATE); +#endif + + return 0; +} + +void reset_cpu(void) +{ + 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) +{ +#if !CONFIG_IS_ENABLED(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 |