diff options
Diffstat (limited to 'arch/arm/mach-ep93xx')
| -rw-r--r-- | arch/arm/mach-ep93xx/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/mach-ep93xx/clock.c | 79 | ||||
| -rw-r--r-- | arch/arm/mach-ep93xx/dma-m2p.c | 408 | ||||
| -rw-r--r-- | arch/arm/mach-ep93xx/edb9307a.c | 12 | ||||
| -rw-r--r-- | arch/arm/mach-ep93xx/include/mach/dma.h | 52 | ||||
| -rw-r--r-- | arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h | 3 |
6 files changed, 554 insertions, 2 deletions
diff --git a/arch/arm/mach-ep93xx/Makefile b/arch/arm/mach-ep93xx/Makefile index 944e42d..9522e20 100644 --- a/arch/arm/mach-ep93xx/Makefile +++ b/arch/arm/mach-ep93xx/Makefile @@ -1,7 +1,7 @@ # # Makefile for the linux kernel. # -obj-y := core.o clock.o gpio.o +obj-y := core.o clock.o dma-m2p.o gpio.o obj-m := obj-n := obj- := diff --git a/arch/arm/mach-ep93xx/clock.c b/arch/arm/mach-ep93xx/clock.c index 9604928..e8ebeae 100644 --- a/arch/arm/mach-ep93xx/clock.c +++ b/arch/arm/mach-ep93xx/clock.c @@ -41,6 +41,56 @@ static struct clk clk_usb_host = { .enable_mask = EP93XX_SYSCON_CLOCK_USH_EN, }; +/* DMA Clocks */ +static struct clk clk_m2p0 = { + .enable_reg = EP93XX_SYSCON_CLOCK_CONTROL, + .enable_mask = 0x00020000, +}; +static struct clk clk_m2p1 = { + .enable_reg = EP93XX_SYSCON_CLOCK_CONTROL, + .enable_mask = 0x00010000, +}; +static struct clk clk_m2p2 = { + .enable_reg = EP93XX_SYSCON_CLOCK_CONTROL, + .enable_mask = 0x00080000, +}; +static struct clk clk_m2p3 = { + .enable_reg = EP93XX_SYSCON_CLOCK_CONTROL, + .enable_mask = 0x00040000, +}; +static struct clk clk_m2p4 = { + .enable_reg = EP93XX_SYSCON_CLOCK_CONTROL, + .enable_mask = 0x00200000, +}; +static struct clk clk_m2p5 = { + .enable_reg = EP93XX_SYSCON_CLOCK_CONTROL, + .enable_mask = 0x00100000, +}; +static struct clk clk_m2p6 = { + .enable_reg = EP93XX_SYSCON_CLOCK_CONTROL, + .enable_mask = 0x00800000, +}; +static struct clk clk_m2p7 = { + .enable_reg = EP93XX_SYSCON_CLOCK_CONTROL, + .enable_mask = 0x00400000, +}; +static struct clk clk_m2p8 = { + .enable_reg = EP93XX_SYSCON_CLOCK_CONTROL, + .enable_mask = 0x02000000, +}; +static struct clk clk_m2p9 = { + .enable_reg = EP93XX_SYSCON_CLOCK_CONTROL, + .enable_mask = 0x01000000, +}; +static struct clk clk_m2m0 = { + .enable_reg = EP93XX_SYSCON_CLOCK_CONTROL, + .enable_mask = 0x04000000, +}; +static struct clk clk_m2m1 = { + .enable_reg = EP93XX_SYSCON_CLOCK_CONTROL, + .enable_mask = 0x08000000, +}; + #define INIT_CK(dev,con,ck) \ { .dev_id = dev, .con_id = con, .clk = ck } @@ -54,6 +104,18 @@ static struct clk_lookup clocks[] = { INIT_CK(NULL, "pclk", &clk_p), INIT_CK(NULL, "pll2", &clk_pll2), INIT_CK(NULL, "usb_host", &clk_usb_host), + INIT_CK(NULL, "m2p0", &clk_m2p0), + INIT_CK(NULL, "m2p1", &clk_m2p1), + INIT_CK(NULL, "m2p2", &clk_m2p2), + INIT_CK(NULL, "m2p3", &clk_m2p3), + INIT_CK(NULL, "m2p4", &clk_m2p4), + INIT_CK(NULL, "m2p5", &clk_m2p5), + INIT_CK(NULL, "m2p6", &clk_m2p6), + INIT_CK(NULL, "m2p7", &clk_m2p7), + INIT_CK(NULL, "m2p8", &clk_m2p8), + INIT_CK(NULL, "m2p9", &clk_m2p9), + INIT_CK(NULL, "m2m0", &clk_m2m0), + INIT_CK(NULL, "m2m1", &clk_m2m1), }; @@ -110,6 +172,22 @@ static unsigned long calc_pll_rate(u32 config_word) return (unsigned long)rate; } +static void __init ep93xx_dma_clock_init(void) +{ + clk_m2p0.rate = clk_h.rate; + clk_m2p1.rate = clk_h.rate; + clk_m2p2.rate = clk_h.rate; + clk_m2p3.rate = clk_h.rate; + clk_m2p4.rate = clk_h.rate; + clk_m2p5.rate = clk_h.rate; + clk_m2p6.rate = clk_h.rate; + clk_m2p7.rate = clk_h.rate; + clk_m2p8.rate = clk_h.rate; + clk_m2p9.rate = clk_h.rate; + clk_m2m0.rate = clk_h.rate; + clk_m2m1.rate = clk_h.rate; +} + static int __init ep93xx_clock_init(void) { u32 value; @@ -124,6 +202,7 @@ static int __init ep93xx_clock_init(void) clk_f.rate = clk_pll1.rate / fclk_divisors[(value >> 25) & 0x7]; clk_h.rate = clk_pll1.rate / hclk_divisors[(value >> 20) & 0x7]; clk_p.rate = clk_h.rate / pclk_divisors[(value >> 18) & 0x3]; + ep93xx_dma_clock_init(); value = __raw_readl(EP93XX_SYSCON_CLOCK_SET2); if (!(value & 0x00080000)) { /* PLL2 bypassed? */ diff --git a/arch/arm/mach-ep93xx/dma-m2p.c b/arch/arm/mach-ep93xx/dma-m2p.c new file mode 100644 index 0000000..a2df5bb --- /dev/null +++ b/arch/arm/mach-ep93xx/dma-m2p.c @@ -0,0 +1,408 @@ +/* + * arch/arm/mach-ep93xx/dma-m2p.c + * M2P DMA handling for Cirrus EP93xx chips. + * + * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org> + * Copyright (C) 2006 Applied Data Systems + * + * Copyright (C) 2009 Ryan Mallon <ryan@bluewatersys.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or (at + * your option) any later version. + */ + +/* + * On the EP93xx chip the following peripherals my be allocated to the 10 + * Memory to Internal Peripheral (M2P) channels (5 transmit + 5 receive). + * + * I2S contains 3 Tx and 3 Rx DMA Channels + * AAC contains 3 Tx and 3 Rx DMA Channels + * UART1 contains 1 Tx and 1 Rx DMA Channels + * UART2 contains 1 Tx and 1 Rx DMA Channels + * UART3 contains 1 Tx and 1 Rx DMA Channels + * IrDA contains 1 Tx and 1 Rx DMA Channels + * + * SSP and IDE use the Memory to Memory (M2M) channels and are not covered + * with this implementation. + */ + +#include <linux/kernel.h> +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/interrupt.h> +#include <linux/module.h> + +#include <mach/dma.h> +#include <mach/hardware.h> + +#define M2P_CONTROL 0x00 +#define M2P_CONTROL_STALL_IRQ_EN (1 << 0) +#define M2P_CONTROL_NFB_IRQ_EN (1 << 1) +#define M2P_CONTROL_ERROR_IRQ_EN (1 << 3) +#define M2P_CONTROL_ENABLE (1 << 4) +#define M2P_INTERRUPT 0x04 +#define M2P_INTERRUPT_STALL (1 << 0) +#define M2P_INTERRUPT_NFB (1 << 1) +#define M2P_INTERRUPT_ERROR (1 << 3) +#define M2P_PPALLOC 0x08 +#define M2P_STATUS 0x0c +#define M2P_REMAIN 0x14 +#define M2P_MAXCNT0 0x20 +#define M2P_BASE0 0x24 +#define M2P_MAXCNT1 0x30 +#define M2P_BASE1 0x34 + +#define STATE_IDLE 0 /* Channel is inactive. */ +#define STATE_STALL 1 /* Channel is active, no buffers pending. */ +#define STATE_ON 2 /* Channel is active, one buffer pending. */ +#define STATE_NEXT 3 /* Channel is active, two buffers pending. */ + +struct m2p_channel { + char *name; + void __iomem *base; + int irq; + + struct clk *clk; + spinlock_t lock; + + void *client; + unsigned next_slot:1; + struct ep93xx_dma_buffer *buffer_xfer; + struct ep93xx_dma_buffer *buffer_next; + struct list_head buffers_pending; +}; + +static struct m2p_channel m2p_rx[] = { + {"m2p1", EP93XX_DMA_BASE + 0x0040, IRQ_EP93XX_DMAM2P1}, + {"m2p3", EP93XX_DMA_BASE + 0x00c0, IRQ_EP93XX_DMAM2P3}, + {"m2p5", EP93XX_DMA_BASE + 0x0200, IRQ_EP93XX_DMAM2P5}, + {"m2p7", EP93XX_DMA_BASE + 0x0280, IRQ_EP93XX_DMAM2P7}, + {"m2p9", EP93XX_DMA_BASE + 0x0300, IRQ_EP93XX_DMAM2P9}, + {NULL}, +}; + +static struct m2p_channel m2p_tx[] = { + {"m2p0", EP93XX_DMA_BASE + 0x0000, IRQ_EP93XX_DMAM2P0}, + {"m2p2", EP93XX_DMA_BASE + 0x0080, IRQ_EP93XX_DMAM2P2}, + {"m2p4", EP93XX_DMA_BASE + 0x0240, IRQ_EP93XX_DMAM2P4}, + {"m2p6", EP93XX_DMA_BASE + 0x02c0, IRQ_EP93XX_DMAM2P6}, + {"m2p8", EP93XX_DMA_BASE + 0x0340, IRQ_EP93XX_DMAM2P8}, + {NULL}, +}; + +static void feed_buf(struct m2p_channel *ch, struct ep93xx_dma_buffer *buf) +{ + if (ch->next_slot == 0) { + writel(buf->size, ch->base + M2P_MAXCNT0); + writel(buf->bus_addr, ch->base + M2P_BASE0); + } else { + writel(buf->size, ch->base + M2P_MAXCNT1); + writel(buf->bus_addr, ch->base + M2P_BASE1); + } + ch->next_slot ^= 1; +} + +static void choose_buffer_xfer(struct m2p_channel *ch) +{ + struct ep93xx_dma_buffer *buf; + + ch->buffer_xfer = NULL; + if (!list_empty(&ch->buffers_pending)) { + buf = list_entry(ch->buffers_pending.next, + struct ep93xx_dma_buffer, list); + list_del(&buf->list); + feed_buf(ch, buf); + ch->buffer_xfer = buf; + } +} + +static void choose_buffer_next(struct m2p_channel *ch) +{ + struct ep93xx_dma_buffer *buf; + + ch->buffer_next = NULL; + if (!list_empty(&ch->buffers_pending)) { + buf = list_entry(ch->buffers_pending.next, + struct ep93xx_dma_buffer, list); + list_del(&buf->list); + feed_buf(ch, buf); + ch->buffer_next = buf; + } +} + +static inline void m2p_set_control(struct m2p_channel *ch, u32 v) +{ + /* + * The control register must be read immediately after being written so + * that the internal state machine is correctly updated. See the ep93xx + * users' guide for details. + */ + writel(v, ch->base + M2P_CONTROL); + readl(ch->base + M2P_CONTROL); +} + +static inline int m2p_channel_state(struct m2p_channel *ch) +{ + return (readl(ch->base + M2P_STATUS) >> 4) & 0x3; +} + +static irqreturn_t m2p_irq(int irq, void *dev_id) +{ + struct m2p_channel *ch = dev_id; + struct ep93xx_dma_m2p_client *cl; + u32 irq_status, v; + int error = 0; + + cl = ch->client; + + spin_lock(&ch->lock); + irq_status = readl(ch->base + M2P_INTERRUPT); + + if (irq_status & M2P_INTERRUPT_ERROR) { + writel(M2P_INTERRUPT_ERROR, ch->base + M2P_INTERRUPT); + error = 1; + } + + if ((irq_status & (M2P_INTERRUPT_STALL | M2P_INTERRUPT_NFB)) == 0) { + spin_unlock(&ch->lock); + return IRQ_NONE; + } + + switch (m2p_channel_state(ch)) { + case STATE_IDLE: + pr_crit("m2p_irq: dma interrupt without a dma buffer\n"); + BUG(); + break; + + case STATE_STALL: + cl->buffer_finished(cl->cookie, ch->buffer_xfer, 0, error); + if (ch->buffer_next != NULL) { + cl->buffer_finished(cl->cookie, ch->buffer_next, + 0, error); + } + choose_buffer_xfer(ch); + choose_buffer_next(ch); + if (ch->buffer_xfer != NULL) + cl->buffer_started(cl->cookie, ch->buffer_xfer); + break; + + case STATE_ON: + cl->buffer_finished(cl->cookie, ch->buffer_xfer, 0, error); + ch->buffer_xfer = ch->buffer_next; + choose_buffer_next(ch); + cl->buffer_started(cl->cookie, ch->buffer_xfer); + break; + + case STATE_NEXT: + pr_crit("m2p_irq: dma interrupt while next\n"); + BUG(); + break; + } + + v = readl(ch->base + M2P_CONTROL) & ~(M2P_CONTROL_STALL_IRQ_EN | + M2P_CONTROL_NFB_IRQ_EN); + if (ch->buffer_xfer != NULL) + v |= M2P_CONTROL_STALL_IRQ_EN; + if (ch->buffer_next != NULL) + v |= M2P_CONTROL_NFB_IRQ_EN; + m2p_set_control(ch, v); + + spin_unlock(&ch->lock); + return IRQ_HANDLED; +} + +static struct m2p_channel *find_free_channel(struct ep93xx_dma_m2p_client *cl) +{ + struct m2p_channel *ch; + int i; + + if (cl->flags & EP93XX_DMA_M2P_RX) + ch = m2p_rx; + else + ch = m2p_tx; + + for (i = 0; ch[i].base; i++) { + struct ep93xx_dma_m2p_client *client; + + client = ch[i].client; + if (client != NULL) { + int port; + + port = cl->flags & EP93XX_DMA_M2P_PORT_MASK; + if (port == (client->flags & + EP93XX_DMA_M2P_PORT_MASK)) { + pr_warning("DMA channel already used by %s\n", + cl->name ? : "unknown client"); + return ERR_PTR(-EBUSY); + } + } + } + + for (i = 0; ch[i].base; i++) { + if (ch[i].client == NULL) + return ch + i; + } + + pr_warning("No free DMA channel for %s\n", + cl->name ? : "unknown client"); + return ERR_PTR(-ENODEV); +} + +static void channel_enable(struct m2p_channel *ch) +{ + struct ep93xx_dma_m2p_client *cl = ch->client; + u32 v; + + clk_enable(ch->clk); + + v = cl->flags & EP93XX_DMA_M2P_PORT_MASK; + writel(v, ch->base + M2P_PPALLOC); + + v = cl->flags & EP93XX_DMA_M2P_ERROR_MASK; + v |= M2P_CONTROL_ENABLE | M2P_CONTROL_ERROR_IRQ_EN; + m2p_set_control(ch, v); +} + +static void channel_disable(struct m2p_channel *ch) +{ + u32 v; + + v = readl(ch->base + M2P_CONTROL); + v &= ~(M2P_CONTROL_STALL_IRQ_EN | M2P_CONTROL_NFB_IRQ_EN); + m2p_set_control(ch, v); + + while (m2p_channel_state(ch) == STATE_ON) + cpu_relax(); + + m2p_set_control(ch, 0x0); + + while (m2p_channel_state(ch) == STATE_STALL) + cpu_relax(); + + clk_disable(ch->clk); +} + +int ep93xx_dma_m2p_client_register(struct ep93xx_dma_m2p_client *cl) +{ + struct m2p_channel *ch; + int err; + + ch = find_free_channel(cl); + if (IS_ERR(ch)) + return PTR_ERR(ch); + + err = request_irq(ch->irq, m2p_irq, 0, cl->name ? : "dma-m2p", ch); + if (err) + return err; + + ch->client = cl; + ch->next_slot = 0; + ch->buffer_xfer = NULL; + ch->buffer_next = NULL; + INIT_LIST_HEAD(&ch->buffers_pending); + + cl->channel = ch; + + channel_enable(ch); + + return 0; +} +EXPORT_SYMBOL_GPL(ep93xx_dma_m2p_client_register); + +void ep93xx_dma_m2p_client_unregister(struct ep93xx_dma_m2p_client *cl) +{ + struct m2p_channel *ch = cl->channel; + + channel_disable(ch); + free_irq(ch->irq, ch); + ch->client = NULL; +} +EXPORT_SYMBOL_GPL(ep93xx_dma_m2p_client_unregister); + +void ep93xx_dma_m2p_submit(struct ep93xx_dma_m2p_client *cl, + struct ep93xx_dma_buffer *buf) +{ + struct m2p_channel *ch = cl->channel; + unsigned long flags; + u32 v; + + spin_lock_irqsave(&ch->lock, flags); + v = readl(ch->base + M2P_CONTROL); + if (ch->buffer_xfer == NULL) { + ch->buffer_xfer = buf; + feed_buf(ch, buf); + cl->buffer_started(cl->cookie, buf); + + v |= M2P_CONTROL_STALL_IRQ_EN; + m2p_set_control(ch, v); + + } else if (ch->buffer_next == NULL) { + ch->buffer_next = buf; + feed_buf(ch, buf); + + v |= M2P_CONTROL_NFB_IRQ_EN; + m2p_set_control(ch, v); + } else { + list_add_tail(&buf->list, &ch->buffers_pending); + } + spin_unlock_irqrestore(&ch->lock, flags); +} +EXPORT_SYMBOL_GPL(ep93xx_dma_m2p_submit); + +void ep93xx_dma_m2p_submit_recursive(struct ep93xx_dma_m2p_client *cl, + struct ep93xx_dma_buffer *buf) +{ + struct m2p_channel *ch = cl->channel; + + list_add_tail(&buf->list, &ch->buffers_pending); +} +EXPORT_SYMBOL_GPL(ep93xx_dma_m2p_submit_recursive); + +void ep93xx_dma_m2p_flush(struct ep93xx_dma_m2p_client *cl) +{ + struct m2p_channel *ch = cl->channel; + + channel_disable(ch); + ch->next_slot = 0; + ch->buffer_xfer = NULL; + ch->buffer_next = NULL; + INIT_LIST_HEAD(&ch->buffers_pending); + channel_enable(ch); +} +EXPORT_SYMBOL_GPL(ep93xx_dma_m2p_flush); + +static int init_channel(struct m2p_channel *ch) +{ + ch->clk = clk_get(NULL, ch->name); + if (IS_ERR(ch->clk)) + return PTR_ERR(ch->clk); + + spin_lock_init(&ch->lock); + ch->client = NULL; + + return 0; +} + +static int __init ep93xx_dma_m2p_init(void) +{ + int i; + int ret; + + for (i = 0; m2p_rx[i].base; i++) { + ret = init_channel(m2p_rx + i); + if (ret) + return ret; + } + + for (i = 0; m2p_tx[i].base; i++) { + ret = init_channel(m2p_tx + i); + if (ret) + return ret; + } + + pr_info("M2P DMA subsystem initialized\n"); + return 0; +} +arch_initcall(ep93xx_dma_m2p_init); diff --git a/arch/arm/mach-ep93xx/edb9307a.c b/arch/arm/mach-ep93xx/edb9307a.c index 5b5c22b..6171167 100644 --- a/arch/arm/mach-ep93xx/edb9307a.c +++ b/arch/arm/mach-ep93xx/edb9307a.c @@ -48,12 +48,24 @@ static struct ep93xx_eth_data edb9307a_eth_data = { .phy_id = 1, }; +static struct i2c_board_info __initdata edb9307a_i2c_data[] = { + { + /* On-board battery backed RTC */ + I2C_BOARD_INFO("isl1208", 0x6f), + }, + /* + * The I2C signals are also routed to the Expansion Connector (J4) + */ +}; + static void __init edb9307a_init_machine(void) { ep93xx_init_devices(); platform_device_register(&edb9307a_flash); ep93xx_register_eth(&edb9307a_eth_data, 1); + + ep93xx_init_i2c(edb9307a_i2c_data, ARRAY_SIZE(edb9307a_i2c_data)); } MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board") diff --git a/arch/arm/mach-ep93xx/include/mach/dma.h b/arch/arm/mach-ep93xx/include/mach/dma.h new file mode 100644 index 0000000..ef6bd9d --- /dev/null +++ b/arch/arm/mach-ep93xx/include/mach/dma.h @@ -0,0 +1,52 @@ +#ifndef __ASM_ARCH_DMA_H +#define __ASM_ARCH_DMA_H + +#include <linux/list.h> +#include <linux/types.h> + +struct ep93xx_dma_buffer { + struct list_head list; + u32 bus_addr; + u16 size; +}; + +struct ep93xx_dma_m2p_client { + char *name; + u8 flags; + void *cookie; + void (*buffer_started)(void *cookie, + struct ep93xx_dma_buffer *buf); + void (*buffer_finished)(void *cookie, + struct ep93xx_dma_buffer *buf, + int bytes, int error); + + /* Internal to the DMA code. */ + void *channel; +}; + +#define EP93XX_DMA_M2P_PORT_I2S1 0x00 +#define EP93XX_DMA_M2P_PORT_I2S2 0x01 +#define EP93XX_DMA_M2P_PORT_AAC1 0x02 +#define EP93XX_DMA_M2P_PORT_AAC2 0x03 +#define EP93XX_DMA_M2P_PORT_AAC3 0x04 +#define EP93XX_DMA_M2P_PORT_I2S3 0x05 +#define EP93XX_DMA_M2P_PORT_UART1 0x06 +#define EP93XX_DMA_M2P_PORT_UART2 0x07 +#define EP93XX_DMA_M2P_PORT_UART3 0x08 +#define EP93XX_DMA_M2P_PORT_IRDA 0x09 +#define EP93XX_DMA_M2P_PORT_MASK 0x0f +#define EP93XX_DMA_M2P_TX 0x00 +#define EP93XX_DMA_M2P_RX 0x10 +#define EP93XX_DMA_M2P_ABORT_ON_ERROR 0x20 +#define EP93XX_DMA_M2P_IGNORE_ERROR 0x40 +#define EP93XX_DMA_M2P_ERROR_MASK 0x60 + +int ep93xx_dma_m2p_client_register(struct ep93xx_dma_m2p_client *m2p); +void ep93xx_dma_m2p_client_unregister(struct ep93xx_dma_m2p_client *m2p); +void ep93xx_dma_m2p_submit(struct ep93xx_dma_m2p_client *m2p, + struct ep93xx_dma_buffer *buf); +void ep93xx_dma_m2p_submit_recursive(struct ep93xx_dma_m2p_client *m2p, + struct ep93xx_dma_buffer *buf); +void ep93xx_dma_m2p_flush(struct ep93xx_dma_m2p_client *m2p); + +#endif /* __ASM_ARCH_DMA_H */ diff --git a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h b/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h index 22d6c9a..f66be12 100644 --- a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h +++ b/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h @@ -58,7 +58,8 @@ /* AHB peripherals */ -#define EP93XX_DMA_BASE (EP93XX_AHB_VIRT_BASE + 0x00000000) +#define EP93XX_DMA_BASE ((void __iomem *) \ + (EP93XX_AHB_VIRT_BASE + 0x00000000)) #define EP93XX_ETHERNET_BASE (EP93XX_AHB_VIRT_BASE + 0x00010000) #define EP93XX_ETHERNET_PHYS_BASE (EP93XX_AHB_PHYS_BASE + 0x00010000) |