From edabd38e1a017e922e3e3b485ee3ddb4df433aa4 Mon Sep 17 00:00:00 2001 From: Saeed Bishara Date: Thu, 6 Aug 2009 15:12:43 +0300 Subject: ARM: add base support for Marvell Dove SoC The Marvell Dove (88AP510) is a high-performance, highly integrated, low power SoC with high-end ARM-compatible processor (known as PJ4), graphics processing unit, high-definition video decoding acceleration hardware, and a broad range of peripherals. Signed-off-by: Lennert Buytenhek Signed-off-by: Saeed Bishara Signed-off-by: Nicolas Pitre --- arch/arm/mach-dove/common.c | 777 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 777 insertions(+) create mode 100644 arch/arm/mach-dove/common.c (limited to 'arch/arm/mach-dove/common.c') diff --git a/arch/arm/mach-dove/common.c b/arch/arm/mach-dove/common.c new file mode 100644 index 00000000000..a20cf099cd9 --- /dev/null +++ b/arch/arm/mach-dove/common.c @@ -0,0 +1,777 @@ +/* + * arch/arm/mach-dove/common.c + * + * Core functions for Marvell Dove 88AP510 System On Chip + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "common.h" + +/***************************************************************************** + * I/O Address Mapping + ****************************************************************************/ +static struct map_desc dove_io_desc[] __initdata = { + { + .virtual = DOVE_SB_REGS_VIRT_BASE, + .pfn = __phys_to_pfn(DOVE_SB_REGS_PHYS_BASE), + .length = DOVE_SB_REGS_SIZE, + .type = MT_DEVICE, + }, { + .virtual = DOVE_NB_REGS_VIRT_BASE, + .pfn = __phys_to_pfn(DOVE_NB_REGS_PHYS_BASE), + .length = DOVE_NB_REGS_SIZE, + .type = MT_DEVICE, + }, { + .virtual = DOVE_PCIE0_IO_VIRT_BASE, + .pfn = __phys_to_pfn(DOVE_PCIE0_IO_PHYS_BASE), + .length = DOVE_PCIE0_IO_SIZE, + .type = MT_DEVICE, + }, { + .virtual = DOVE_PCIE1_IO_VIRT_BASE, + .pfn = __phys_to_pfn(DOVE_PCIE1_IO_PHYS_BASE), + .length = DOVE_PCIE1_IO_SIZE, + .type = MT_DEVICE, + }, +}; + +void __init dove_map_io(void) +{ + iotable_init(dove_io_desc, ARRAY_SIZE(dove_io_desc)); +} + +/***************************************************************************** + * EHCI + ****************************************************************************/ +static struct orion_ehci_data dove_ehci_data = { + .dram = &dove_mbus_dram_info, + .phy_version = EHCI_PHY_NA, +}; + +static u64 ehci_dmamask = DMA_BIT_MASK(32); + +/***************************************************************************** + * EHCI0 + ****************************************************************************/ +static struct resource dove_ehci0_resources[] = { + { + .start = DOVE_USB0_PHYS_BASE, + .end = DOVE_USB0_PHYS_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, { + .start = IRQ_DOVE_USB0, + .end = IRQ_DOVE_USB0, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device dove_ehci0 = { + .name = "orion-ehci", + .id = 0, + .dev = { + .dma_mask = &ehci_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &dove_ehci_data, + }, + .resource = dove_ehci0_resources, + .num_resources = ARRAY_SIZE(dove_ehci0_resources), +}; + +void __init dove_ehci0_init(void) +{ + platform_device_register(&dove_ehci0); +} + +/***************************************************************************** + * EHCI1 + ****************************************************************************/ +static struct resource dove_ehci1_resources[] = { + { + .start = DOVE_USB1_PHYS_BASE, + .end = DOVE_USB1_PHYS_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, { + .start = IRQ_DOVE_USB1, + .end = IRQ_DOVE_USB1, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device dove_ehci1 = { + .name = "orion-ehci", + .id = 1, + .dev = { + .dma_mask = &ehci_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &dove_ehci_data, + }, + .resource = dove_ehci1_resources, + .num_resources = ARRAY_SIZE(dove_ehci1_resources), +}; + +void __init dove_ehci1_init(void) +{ + platform_device_register(&dove_ehci1); +} + +/***************************************************************************** + * GE00 + ****************************************************************************/ +struct mv643xx_eth_shared_platform_data dove_ge00_shared_data = { + .t_clk = 0, + .dram = &dove_mbus_dram_info, +}; + +static struct resource dove_ge00_shared_resources[] = { + { + .name = "ge00 base", + .start = DOVE_GE00_PHYS_BASE + 0x2000, + .end = DOVE_GE00_PHYS_BASE + SZ_16K - 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device dove_ge00_shared = { + .name = MV643XX_ETH_SHARED_NAME, + .id = 0, + .dev = { + .platform_data = &dove_ge00_shared_data, + }, + .num_resources = 1, + .resource = dove_ge00_shared_resources, +}; + +static struct resource dove_ge00_resources[] = { + { + .name = "ge00 irq", + .start = IRQ_DOVE_GE00_SUM, + .end = IRQ_DOVE_GE00_SUM, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device dove_ge00 = { + .name = MV643XX_ETH_NAME, + .id = 0, + .num_resources = 1, + .resource = dove_ge00_resources, + .dev = { + .coherent_dma_mask = 0xffffffff, + }, +}; + +void __init dove_ge00_init(struct mv643xx_eth_platform_data *eth_data) +{ + eth_data->shared = &dove_ge00_shared; + dove_ge00.dev.platform_data = eth_data; + + platform_device_register(&dove_ge00_shared); + platform_device_register(&dove_ge00); +} + +/***************************************************************************** + * SoC RTC + ****************************************************************************/ +static struct resource dove_rtc_resource[] = { + { + .start = DOVE_RTC_PHYS_BASE, + .end = DOVE_RTC_PHYS_BASE + 32 - 1, + .flags = IORESOURCE_MEM, + }, { + .start = IRQ_DOVE_RTC, + .flags = IORESOURCE_IRQ, + } +}; + +void __init dove_rtc_init(void) +{ + platform_device_register_simple("rtc-mv", -1, dove_rtc_resource, 2); +} + +/***************************************************************************** + * SATA + ****************************************************************************/ +static struct resource dove_sata_resources[] = { + { + .name = "sata base", + .start = DOVE_SATA_PHYS_BASE, + .end = DOVE_SATA_PHYS_BASE + 0x5000 - 1, + .flags = IORESOURCE_MEM, + }, { + .name = "sata irq", + .start = IRQ_DOVE_SATA, + .end = IRQ_DOVE_SATA, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device dove_sata = { + .name = "sata_mv", + .id = 0, + .dev = { + .coherent_dma_mask = DMA_BIT_MASK(32), + }, + .num_resources = ARRAY_SIZE(dove_sata_resources), + .resource = dove_sata_resources, +}; + +void __init dove_sata_init(struct mv_sata_platform_data *sata_data) +{ + sata_data->dram = &dove_mbus_dram_info; + dove_sata.dev.platform_data = sata_data; + platform_device_register(&dove_sata); +} + +/***************************************************************************** + * UART0 + ****************************************************************************/ +static struct plat_serial8250_port dove_uart0_data[] = { + { + .mapbase = DOVE_UART0_PHYS_BASE, + .membase = (char *)DOVE_UART0_VIRT_BASE, + .irq = IRQ_DOVE_UART_0, + .flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF, + .iotype = UPIO_MEM, + .regshift = 2, + .uartclk = 0, + }, { + }, +}; + +static struct resource dove_uart0_resources[] = { + { + .start = DOVE_UART0_PHYS_BASE, + .end = DOVE_UART0_PHYS_BASE + SZ_256 - 1, + .flags = IORESOURCE_MEM, + }, { + .start = IRQ_DOVE_UART_0, + .end = IRQ_DOVE_UART_0, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device dove_uart0 = { + .name = "serial8250", + .id = 0, + .dev = { + .platform_data = dove_uart0_data, + }, + .resource = dove_uart0_resources, + .num_resources = ARRAY_SIZE(dove_uart0_resources), +}; + +void __init dove_uart0_init(void) +{ + platform_device_register(&dove_uart0); +} + +/***************************************************************************** + * UART1 + ****************************************************************************/ +static struct plat_serial8250_port dove_uart1_data[] = { + { + .mapbase = DOVE_UART1_PHYS_BASE, + .membase = (char *)DOVE_UART1_VIRT_BASE, + .irq = IRQ_DOVE_UART_1, + .flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF, + .iotype = UPIO_MEM, + .regshift = 2, + .uartclk = 0, + }, { + }, +}; + +static struct resource dove_uart1_resources[] = { + { + .start = DOVE_UART1_PHYS_BASE, + .end = DOVE_UART1_PHYS_BASE + SZ_256 - 1, + .flags = IORESOURCE_MEM, + }, { + .start = IRQ_DOVE_UART_1, + .end = IRQ_DOVE_UART_1, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device dove_uart1 = { + .name = "serial8250", + .id = 1, + .dev = { + .platform_data = dove_uart1_data, + }, + .resource = dove_uart1_resources, + .num_resources = ARRAY_SIZE(dove_uart1_resources), +}; + +void __init dove_uart1_init(void) +{ + platform_device_register(&dove_uart1); +} + +/***************************************************************************** + * UART2 + ****************************************************************************/ +static struct plat_serial8250_port dove_uart2_data[] = { + { + .mapbase = DOVE_UART2_PHYS_BASE, + .membase = (char *)DOVE_UART2_VIRT_BASE, + .irq = IRQ_DOVE_UART_2, + .flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF, + .iotype = UPIO_MEM, + .regshift = 2, + .uartclk = 0, + }, { + }, +}; + +static struct resource dove_uart2_resources[] = { + { + .start = DOVE_UART2_PHYS_BASE, + .end = DOVE_UART2_PHYS_BASE + SZ_256 - 1, + .flags = IORESOURCE_MEM, + }, { + .start = IRQ_DOVE_UART_2, + .end = IRQ_DOVE_UART_2, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device dove_uart2 = { + .name = "serial8250", + .id = 2, + .dev = { + .platform_data = dove_uart2_data, + }, + .resource = dove_uart2_resources, + .num_resources = ARRAY_SIZE(dove_uart2_resources), +}; + +void __init dove_uart2_init(void) +{ + platform_device_register(&dove_uart2); +} + +/***************************************************************************** + * UART3 + ****************************************************************************/ +static struct plat_serial8250_port dove_uart3_data[] = { + { + .mapbase = DOVE_UART3_PHYS_BASE, + .membase = (char *)DOVE_UART3_VIRT_BASE, + .irq = IRQ_DOVE_UART_3, + .flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF, + .iotype = UPIO_MEM, + .regshift = 2, + .uartclk = 0, + }, { + }, +}; + +static struct resource dove_uart3_resources[] = { + { + .start = DOVE_UART3_PHYS_BASE, + .end = DOVE_UART3_PHYS_BASE + SZ_256 - 1, + .flags = IORESOURCE_MEM, + }, { + .start = IRQ_DOVE_UART_3, + .end = IRQ_DOVE_UART_3, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device dove_uart3 = { + .name = "serial8250", + .id = 3, + .dev = { + .platform_data = dove_uart3_data, + }, + .resource = dove_uart3_resources, + .num_resources = ARRAY_SIZE(dove_uart3_resources), +}; + +void __init dove_uart3_init(void) +{ + platform_device_register(&dove_uart3); +} + +/***************************************************************************** + * SPI0 + ****************************************************************************/ +static struct orion_spi_info dove_spi0_data = { + .tclk = 0, +}; + +static struct resource dove_spi0_resources[] = { + { + .start = DOVE_SPI0_PHYS_BASE, + .end = DOVE_SPI0_PHYS_BASE + SZ_512 - 1, + .flags = IORESOURCE_MEM, + }, { + .start = IRQ_DOVE_SPI0, + .end = IRQ_DOVE_SPI0, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device dove_spi0 = { + .name = "orion_spi", + .id = 0, + .resource = dove_spi0_resources, + .dev = { + .platform_data = &dove_spi0_data, + }, + .num_resources = ARRAY_SIZE(dove_spi0_resources), +}; + +void __init dove_spi0_init(void) +{ + platform_device_register(&dove_spi0); +} + +/***************************************************************************** + * SPI1 + ****************************************************************************/ +static struct orion_spi_info dove_spi1_data = { + .tclk = 0, +}; + +static struct resource dove_spi1_resources[] = { + { + .start = DOVE_SPI1_PHYS_BASE, + .end = DOVE_SPI1_PHYS_BASE + SZ_512 - 1, + .flags = IORESOURCE_MEM, + }, { + .start = IRQ_DOVE_SPI1, + .end = IRQ_DOVE_SPI1, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device dove_spi1 = { + .name = "orion_spi", + .id = 1, + .resource = dove_spi1_resources, + .dev = { + .platform_data = &dove_spi1_data, + }, + .num_resources = ARRAY_SIZE(dove_spi1_resources), +}; + +void __init dove_spi1_init(void) +{ + platform_device_register(&dove_spi1); +} + +/***************************************************************************** + * I2C + ****************************************************************************/ +static struct mv64xxx_i2c_pdata dove_i2c_data = { + .freq_m = 10, /* assumes 166 MHz TCLK gets 94.3kHz */ + .freq_n = 3, + .timeout = 1000, /* Default timeout of 1 second */ +}; + +static struct resource dove_i2c_resources[] = { + { + .name = "i2c base", + .start = DOVE_I2C_PHYS_BASE, + .end = DOVE_I2C_PHYS_BASE + 0x20 - 1, + .flags = IORESOURCE_MEM, + }, { + .name = "i2c irq", + .start = IRQ_DOVE_I2C, + .end = IRQ_DOVE_I2C, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device dove_i2c = { + .name = MV64XXX_I2C_CTLR_NAME, + .id = 0, + .num_resources = ARRAY_SIZE(dove_i2c_resources), + .resource = dove_i2c_resources, + .dev = { + .platform_data = &dove_i2c_data, + }, +}; + +void __init dove_i2c_init(void) +{ + platform_device_register(&dove_i2c); +} + +/***************************************************************************** + * Time handling + ****************************************************************************/ +static int get_tclk(void) +{ + /* use DOVE_RESET_SAMPLE_HI/LO to detect tclk */ + return 166666667; +} + +static void dove_timer_init(void) +{ + orion_time_init(IRQ_DOVE_BRIDGE, get_tclk()); +} + +struct sys_timer dove_timer = { + .init = dove_timer_init, +}; + +/***************************************************************************** + * XOR + ****************************************************************************/ +static struct mv_xor_platform_shared_data dove_xor_shared_data = { + .dram = &dove_mbus_dram_info, +}; + +/***************************************************************************** + * XOR 0 + ****************************************************************************/ +static u64 dove_xor0_dmamask = DMA_BIT_MASK(32); + +static struct resource dove_xor0_shared_resources[] = { + { + .name = "xor 0 low", + .start = DOVE_XOR0_PHYS_BASE, + .end = DOVE_XOR0_PHYS_BASE + 0xff, + .flags = IORESOURCE_MEM, + }, { + .name = "xor 0 high", + .start = DOVE_XOR0_HIGH_PHYS_BASE, + .end = DOVE_XOR0_HIGH_PHYS_BASE + 0xff, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device dove_xor0_shared = { + .name = MV_XOR_SHARED_NAME, + .id = 0, + .dev = { + .platform_data = &dove_xor_shared_data, + }, + .num_resources = ARRAY_SIZE(dove_xor0_shared_resources), + .resource = dove_xor0_shared_resources, +}; + +static struct resource dove_xor00_resources[] = { + [0] = { + .start = IRQ_DOVE_XOR_00, + .end = IRQ_DOVE_XOR_00, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct mv_xor_platform_data dove_xor00_data = { + .shared = &dove_xor0_shared, + .hw_id = 0, + .pool_size = PAGE_SIZE, +}; + +static struct platform_device dove_xor00_channel = { + .name = MV_XOR_NAME, + .id = 0, + .num_resources = ARRAY_SIZE(dove_xor00_resources), + .resource = dove_xor00_resources, + .dev = { + .dma_mask = &dove_xor0_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(64), + .platform_data = (void *)&dove_xor00_data, + }, +}; + +static struct resource dove_xor01_resources[] = { + [0] = { + .start = IRQ_DOVE_XOR_01, + .end = IRQ_DOVE_XOR_01, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct mv_xor_platform_data dove_xor01_data = { + .shared = &dove_xor0_shared, + .hw_id = 1, + .pool_size = PAGE_SIZE, +}; + +static struct platform_device dove_xor01_channel = { + .name = MV_XOR_NAME, + .id = 1, + .num_resources = ARRAY_SIZE(dove_xor01_resources), + .resource = dove_xor01_resources, + .dev = { + .dma_mask = &dove_xor0_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(64), + .platform_data = (void *)&dove_xor01_data, + }, +}; + +void __init dove_xor0_init(void) +{ + platform_device_register(&dove_xor0_shared); + + /* + * two engines can't do memset simultaneously, this limitation + * satisfied by removing memset support from one of the engines. + */ + dma_cap_set(DMA_MEMCPY, dove_xor00_data.cap_mask); + dma_cap_set(DMA_XOR, dove_xor00_data.cap_mask); + platform_device_register(&dove_xor00_channel); + + dma_cap_set(DMA_MEMCPY, dove_xor01_data.cap_mask); + dma_cap_set(DMA_MEMSET, dove_xor01_data.cap_mask); + dma_cap_set(DMA_XOR, dove_xor01_data.cap_mask); + platform_device_register(&dove_xor01_channel); +} + +/***************************************************************************** + * XOR 1 + ****************************************************************************/ +static u64 dove_xor1_dmamask = DMA_BIT_MASK(32); + +static struct resource dove_xor1_shared_resources[] = { + { + .name = "xor 0 low", + .start = DOVE_XOR1_PHYS_BASE, + .end = DOVE_XOR1_PHYS_BASE + 0xff, + .flags = IORESOURCE_MEM, + }, { + .name = "xor 0 high", + .start = DOVE_XOR1_HIGH_PHYS_BASE, + .end = DOVE_XOR1_HIGH_PHYS_BASE + 0xff, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device dove_xor1_shared = { + .name = MV_XOR_SHARED_NAME, + .id = 1, + .dev = { + .platform_data = &dove_xor_shared_data, + }, + .num_resources = ARRAY_SIZE(dove_xor1_shared_resources), + .resource = dove_xor1_shared_resources, +}; + +static struct resource dove_xor10_resources[] = { + [0] = { + .start = IRQ_DOVE_XOR_10, + .end = IRQ_DOVE_XOR_10, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct mv_xor_platform_data dove_xor10_data = { + .shared = &dove_xor1_shared, + .hw_id = 0, + .pool_size = PAGE_SIZE, +}; + +static struct platform_device dove_xor10_channel = { + .name = MV_XOR_NAME, + .id = 2, + .num_resources = ARRAY_SIZE(dove_xor10_resources), + .resource = dove_xor10_resources, + .dev = { + .dma_mask = &dove_xor1_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(64), + .platform_data = (void *)&dove_xor10_data, + }, +}; + +static struct resource dove_xor11_resources[] = { + [0] = { + .start = IRQ_DOVE_XOR_11, + .end = IRQ_DOVE_XOR_11, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct mv_xor_platform_data dove_xor11_data = { + .shared = &dove_xor1_shared, + .hw_id = 1, + .pool_size = PAGE_SIZE, +}; + +static struct platform_device dove_xor11_channel = { + .name = MV_XOR_NAME, + .id = 3, + .num_resources = ARRAY_SIZE(dove_xor11_resources), + .resource = dove_xor11_resources, + .dev = { + .dma_mask = &dove_xor1_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(64), + .platform_data = (void *)&dove_xor11_data, + }, +}; + +void __init dove_xor1_init(void) +{ + platform_device_register(&dove_xor1_shared); + + /* + * two engines can't do memset simultaneously, this limitation + * satisfied by removing memset support from one of the engines. + */ + dma_cap_set(DMA_MEMCPY, dove_xor10_data.cap_mask); + dma_cap_set(DMA_XOR, dove_xor10_data.cap_mask); + platform_device_register(&dove_xor10_channel); + + dma_cap_set(DMA_MEMCPY, dove_xor11_data.cap_mask); + dma_cap_set(DMA_MEMSET, dove_xor11_data.cap_mask); + dma_cap_set(DMA_XOR, dove_xor11_data.cap_mask); + platform_device_register(&dove_xor11_channel); +} + +void __init dove_init(void) +{ + int tclk; + + tclk = get_tclk(); + + printk(KERN_INFO "Dove 88AP510 SoC, "); + printk(KERN_INFO "TCLK = %dMHz\n", (tclk + 499999) / 1000000); + + dove_setup_cpu_mbus(); + + dove_ge00_shared_data.t_clk = tclk; + dove_uart0_data[0].uartclk = tclk; + dove_uart1_data[0].uartclk = tclk; + dove_uart2_data[0].uartclk = tclk; + dove_uart3_data[0].uartclk = tclk; + dove_spi0_data.tclk = tclk; + dove_spi1_data.tclk = tclk; + + /* internal devices that every board has */ + dove_rtc_init(); + dove_xor0_init(); + dove_xor1_init(); +} -- cgit v1.2.3-70-g09d2 From 573a652fb0da50a1ff3fca2c67afd81138fd06d2 Mon Sep 17 00:00:00 2001 From: Lennert Buytenhek Date: Tue, 24 Nov 2009 19:33:52 +0200 Subject: ARM: Add Tauros2 L2 cache controller support Support for the Tauros2 L2 cache controller as used with the PJ1 and PJ4 CPUs. Signed-off-by: Lennert Buytenhek Signed-off-by: Saeed Bishara Signed-off-by: Nicolas Pitre --- arch/arm/configs/dove_defconfig | 4 +- arch/arm/include/asm/hardware/cache-tauros2.h | 11 ++ arch/arm/mach-dove/common.c | 4 + arch/arm/mm/Kconfig | 9 + arch/arm/mm/Makefile | 2 +- arch/arm/mm/cache-tauros2.c | 263 ++++++++++++++++++++++++++ 6 files changed, 291 insertions(+), 2 deletions(-) create mode 100644 arch/arm/include/asm/hardware/cache-tauros2.h create mode 100644 arch/arm/mm/cache-tauros2.c (limited to 'arch/arm/mach-dove/common.c') diff --git a/arch/arm/configs/dove_defconfig b/arch/arm/configs/dove_defconfig index f2d1ea0abb8..837bb522d46 100644 --- a/arch/arm/configs/dove_defconfig +++ b/arch/arm/configs/dove_defconfig @@ -1,7 +1,7 @@ # # Automatically generated make config: don't edit # Linux kernel version: 2.6.32-rc6 -# Tue Nov 24 13:48:39 2009 +# Tue Nov 24 13:51:23 2009 # CONFIG_ARM=y CONFIG_SYS_SUPPORTS_APM_EMULATION=y @@ -207,6 +207,8 @@ CONFIG_ARM_THUMB=y # CONFIG_CPU_ICACHE_DISABLE is not set # CONFIG_CPU_DCACHE_DISABLE is not set # CONFIG_CPU_BPREDICT_DISABLE is not set +CONFIG_OUTER_CACHE=y +CONFIG_CACHE_TAUROS2=y CONFIG_ARM_L1_CACHE_SHIFT=5 # CONFIG_ARM_ERRATA_411920 is not set diff --git a/arch/arm/include/asm/hardware/cache-tauros2.h b/arch/arm/include/asm/hardware/cache-tauros2.h new file mode 100644 index 00000000000..538f17ca905 --- /dev/null +++ b/arch/arm/include/asm/hardware/cache-tauros2.h @@ -0,0 +1,11 @@ +/* + * arch/arm/include/asm/hardware/cache-tauros2.h + * + * Copyright (C) 2008 Marvell Semiconductor + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +extern void __init tauros2_init(void); diff --git a/arch/arm/mach-dove/common.c b/arch/arm/mach-dove/common.c index a20cf099cd9..806972a68c8 100644 --- a/arch/arm/mach-dove/common.c +++ b/arch/arm/mach-dove/common.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include #include @@ -760,6 +761,9 @@ void __init dove_init(void) printk(KERN_INFO "Dove 88AP510 SoC, "); printk(KERN_INFO "TCLK = %dMHz\n", (tclk + 499999) / 1000000); +#ifdef CONFIG_CACHE_TAUROS2 + tauros2_init(); +#endif dove_setup_cpu_mbus(); dove_ge00_shared_data.t_clk = tclk; diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index 1549863d7b5..4958ef2c625 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -764,6 +764,15 @@ config CACHE_L2X0 help This option enables the L2x0 PrimeCell. +config CACHE_TAUROS2 + bool "Enable the Tauros2 L2 cache controller" + depends on ARCH_DOVE + default y + select OUTER_CACHE + help + This option enables the Tauros2 L2 cache controller (as + found on PJ1/PJ4). + config CACHE_XSC3L2 bool "Enable the L2 cache on XScale3" depends on CPU_XSC3 diff --git a/arch/arm/mm/Makefile b/arch/arm/mm/Makefile index 055cb2aa813..06bcf2e7385 100644 --- a/arch/arm/mm/Makefile +++ b/arch/arm/mm/Makefile @@ -87,4 +87,4 @@ obj-$(CONFIG_CPU_V7) += proc-v7.o obj-$(CONFIG_CACHE_FEROCEON_L2) += cache-feroceon-l2.o obj-$(CONFIG_CACHE_L2X0) += cache-l2x0.o obj-$(CONFIG_CACHE_XSC3L2) += cache-xsc3l2.o - +obj-$(CONFIG_CACHE_TAUROS2) += cache-tauros2.o diff --git a/arch/arm/mm/cache-tauros2.c b/arch/arm/mm/cache-tauros2.c new file mode 100644 index 00000000000..50868651890 --- /dev/null +++ b/arch/arm/mm/cache-tauros2.c @@ -0,0 +1,263 @@ +/* + * arch/arm/mm/cache-tauros2.c - Tauros2 L2 cache controller support + * + * Copyright (C) 2008 Marvell Semiconductor + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + * + * References: + * - PJ1 CPU Core Datasheet, + * Document ID MV-S104837-01, Rev 0.7, January 24 2008. + * - PJ4 CPU Core Datasheet, + * Document ID MV-S105190-00, Rev 0.7, March 14 2008. + */ + +#include +#include +#include + + +/* + * When Tauros2 is used on a CPU that supports the v7 hierarchical + * cache operations, the cache handling code in proc-v7.S takes care + * of everything, including handling DMA coherency. + * + * So, we only need to register outer cache operations here if we're + * being used on a pre-v7 CPU, and we only need to build support for + * outer cache operations into the kernel image if the kernel has been + * configured to support a pre-v7 CPU. + */ +#if __LINUX_ARM_ARCH__ < 7 +/* + * Low-level cache maintenance operations. + */ +static inline void tauros2_clean_pa(unsigned long addr) +{ + __asm__("mcr p15, 1, %0, c7, c11, 3" : : "r" (addr)); +} + +static inline void tauros2_clean_inv_pa(unsigned long addr) +{ + __asm__("mcr p15, 1, %0, c7, c15, 3" : : "r" (addr)); +} + +static inline void tauros2_inv_pa(unsigned long addr) +{ + __asm__("mcr p15, 1, %0, c7, c7, 3" : : "r" (addr)); +} + + +/* + * Linux primitives. + * + * Note that the end addresses passed to Linux primitives are + * noninclusive. + */ +#define CACHE_LINE_SIZE 32 + +static void tauros2_inv_range(unsigned long start, unsigned long end) +{ + /* + * Clean and invalidate partial first cache line. + */ + if (start & (CACHE_LINE_SIZE - 1)) { + tauros2_clean_inv_pa(start & ~(CACHE_LINE_SIZE - 1)); + start = (start | (CACHE_LINE_SIZE - 1)) + 1; + } + + /* + * Clean and invalidate partial last cache line. + */ + if (end & (CACHE_LINE_SIZE - 1)) { + tauros2_clean_inv_pa(end & ~(CACHE_LINE_SIZE - 1)); + end &= ~(CACHE_LINE_SIZE - 1); + } + + /* + * Invalidate all full cache lines between 'start' and 'end'. + */ + while (start < end) { + tauros2_inv_pa(start); + start += CACHE_LINE_SIZE; + } + + dsb(); +} + +static void tauros2_clean_range(unsigned long start, unsigned long end) +{ + start &= ~(CACHE_LINE_SIZE - 1); + while (start < end) { + tauros2_clean_pa(start); + start += CACHE_LINE_SIZE; + } + + dsb(); +} + +static void tauros2_flush_range(unsigned long start, unsigned long end) +{ + start &= ~(CACHE_LINE_SIZE - 1); + while (start < end) { + tauros2_clean_inv_pa(start); + start += CACHE_LINE_SIZE; + } + + dsb(); +} +#endif + +static inline u32 __init read_extra_features(void) +{ + u32 u; + + __asm__("mrc p15, 1, %0, c15, c1, 0" : "=r" (u)); + + return u; +} + +static inline void __init write_extra_features(u32 u) +{ + __asm__("mcr p15, 1, %0, c15, c1, 0" : : "r" (u)); +} + +static void __init disable_l2_prefetch(void) +{ + u32 u; + + /* + * Read the CPU Extra Features register and verify that the + * Disable L2 Prefetch bit is set. + */ + u = read_extra_features(); + if (!(u & 0x01000000)) { + printk(KERN_INFO "Tauros2: Disabling L2 prefetch.\n"); + write_extra_features(u | 0x01000000); + } +} + +static inline int __init cpuid_scheme(void) +{ + extern int processor_id; + + return !!((processor_id & 0x000f0000) == 0x000f0000); +} + +static inline u32 __init read_mmfr3(void) +{ + u32 mmfr3; + + __asm__("mrc p15, 0, %0, c0, c1, 7\n" : "=r" (mmfr3)); + + return mmfr3; +} + +static inline u32 __init read_actlr(void) +{ + u32 actlr; + + __asm__("mrc p15, 0, %0, c1, c0, 1\n" : "=r" (actlr)); + + return actlr; +} + +static inline void __init write_actlr(u32 actlr) +{ + __asm__("mcr p15, 0, %0, c1, c0, 1\n" : : "r" (actlr)); +} + +void __init tauros2_init(void) +{ + extern int processor_id; + char *mode; + + disable_l2_prefetch(); + +#ifdef CONFIG_CPU_32v5 + if ((processor_id & 0xff0f0000) == 0x56050000) { + u32 feat; + + /* + * v5 CPUs with Tauros2 have the L2 cache enable bit + * located in the CPU Extra Features register. + */ + feat = read_extra_features(); + if (!(feat & 0x00400000)) { + printk(KERN_INFO "Tauros2: Enabling L2 cache.\n"); + write_extra_features(feat | 0x00400000); + } + + mode = "ARMv5"; + outer_cache.inv_range = tauros2_inv_range; + outer_cache.clean_range = tauros2_clean_range; + outer_cache.flush_range = tauros2_flush_range; + } +#endif + +#ifdef CONFIG_CPU_32v6 + /* + * Check whether this CPU lacks support for the v7 hierarchical + * cache ops. (PJ4 is in its v6 personality mode if the MMFR3 + * register indicates no support for the v7 hierarchical cache + * ops.) + */ + if (cpuid_scheme() && (read_mmfr3() & 0xf) == 0) { + /* + * When Tauros2 is used in an ARMv6 system, the L2 + * enable bit is in the ARMv6 ARM-mandated position + * (bit [26] of the System Control Register). + */ + if (!(get_cr() & 0x04000000)) { + printk(KERN_INFO "Tauros2: Enabling L2 cache.\n"); + adjust_cr(0x04000000, 0x04000000); + } + + mode = "ARMv6"; + outer_cache.inv_range = tauros2_inv_range; + outer_cache.clean_range = tauros2_clean_range; + outer_cache.flush_range = tauros2_flush_range; + } +#endif + +#ifdef CONFIG_CPU_32v7 + /* + * Check whether this CPU has support for the v7 hierarchical + * cache ops. (PJ4 is in its v7 personality mode if the MMFR3 + * register indicates support for the v7 hierarchical cache + * ops.) + * + * (Although strictly speaking there may exist CPUs that + * implement the v7 cache ops but are only ARMv6 CPUs (due to + * not complying with all of the other ARMv7 requirements), + * there are no real-life examples of Tauros2 being used on + * such CPUs as of yet.) + */ + if (cpuid_scheme() && (read_mmfr3() & 0xf) == 1) { + u32 actlr; + + /* + * When Tauros2 is used in an ARMv7 system, the L2 + * enable bit is located in the Auxiliary System Control + * Register (which is the only register allowed by the + * ARMv7 spec to contain fine-grained cache control bits). + */ + actlr = read_actlr(); + if (!(actlr & 0x00000002)) { + printk(KERN_INFO "Tauros2: Enabling L2 cache.\n"); + write_actlr(actlr | 0x00000002); + } + + mode = "ARMv7"; + } +#endif + + if (mode == NULL) { + printk(KERN_CRIT "Tauros2: Unable to detect CPU mode.\n"); + return; + } + + printk(KERN_INFO "Tauros2: L2 cache support initialised " + "in %s mode.\n", mode); +} -- cgit v1.2.3-70-g09d2