Commit a85be436 authored by Ralf Bächle's avatar Ralf Bächle Committed by Linus Torvalds

[PATCH] Alchemy update

This is an update of the AMD Alchemy support for 2.5.

(This is way behind what we have for 2.4 but forward porting is non-trivial
and work in progress.)
parent 9451f92d
...@@ -5,14 +5,14 @@ ...@@ -5,14 +5,14 @@
# #
# Makefile for the Alchemy Au1000 CPU, generic files. # Makefile for the Alchemy Au1000 CPU, generic files.
# #
# Note! Dependencies are done automagically by 'make dep', which also
# removes any old dependencies. DON'T put your own dependencies here
# unless it's something special (ie not a .c file).
#
obj-y := prom.o dbg_io.o int-handler.o irq.o puts.o time.o reset.o obj-y += prom.o int-handler.o dma.o irq.o puts.o \
time.o reset.o clocks.o power.o
obj-$(CONFIG_AU1000_UART) += serial.o
obj-$(CONFIG_REMOTE_DEBUG) += dbg_io.o
obj-$(CONFIG_BLK_DEV_INITRD) += ramdisk.o
EXTRA_AFLAGS := $(CFLAGS)
ramdisk.o: obj-$(CONFIG_AU1X00_USB_DEVICE) += usbdev.o
mkramobj ramdisk ramdisk.o obj-$(CONFIG_KGDB) += dbg_io.o
obj-$(CONFIG_RTC) += rtc.o
/*
* BRIEF MODULE DESCRIPTION
* Simple Au1000 clocks routines.
*
* Copyright 2001 MontaVista Software Inc.
* Author: MontaVista Software, Inc.
* ppopov@mvista.com or source@mvista.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.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
#include <asm/au1000.h>
static unsigned int au1x00_clock; // Hz
static unsigned int lcd_clock; // KHz
static unsigned long uart_baud_base;
/*
* Set the au1000_clock
*/
void set_au1x00_speed(unsigned int new_freq)
{
au1x00_clock = new_freq;
}
unsigned int get_au1x00_speed(void)
{
return au1x00_clock;
}
/*
* The UART baud base is not known at compile time ... if
* we want to be able to use the same code on different
* speed CPUs.
*/
unsigned long get_au1x00_uart_baud_base(void)
{
return uart_baud_base;
}
void set_au1x00_uart_baud_base(unsigned long new_baud_base)
{
uart_baud_base = new_baud_base;
}
/*
* Calculate the Au1x00's LCD clock based on the current
* cpu clock and the system bus clock, and try to keep it
* below 40 MHz (the Pb1000 board can lock-up if the LCD
* clock is over 40 MHz).
*/
void set_au1x00_lcd_clock(void)
{
unsigned int static_cfg0;
unsigned int sys_busclk =
(get_au1x00_speed()/1000) /
((int)(au_readl(SYS_POWERCTRL)&0x03) + 2);
static_cfg0 = au_readl(MEM_STCFG0);
if (static_cfg0 & (1<<11))
lcd_clock = sys_busclk / 5; /* note: BCLK switching fails with D5 */
else
lcd_clock = sys_busclk / 4;
if (lcd_clock > 50000) /* Epson MAX */
printk("%s: warning: LCD clock too high (%d KHz)\n",
__FUNCTION__, lcd_clock);
}
unsigned int get_au1x00_lcd_clock(void)
{
return lcd_clock;
}
EXPORT_SYMBOL(get_au1x00_lcd_clock);
...@@ -3,13 +3,13 @@ ...@@ -3,13 +3,13 @@
#include <asm/io.h> #include <asm/io.h>
#include <asm/au1000.h> #include <asm/au1000.h>
#ifdef CONFIG_REMOTE_DEBUG #ifdef CONFIG_KGDB
/* /*
* FIXME the user should be able to select the * FIXME the user should be able to select the
* uart to be used for debugging. * uart to be used for debugging.
*/ */
#define DEBUG_BASE UART2_ADDR #define DEBUG_BASE UART_DEBUG_BASE
/**/ /**/
/* we need uint32 uint8 */ /* we need uint32 uint8 */
...@@ -53,8 +53,11 @@ typedef unsigned int uint32; ...@@ -53,8 +53,11 @@ typedef unsigned int uint32;
#define UART_MOD_CNTRL 0x100 /* Module Control */ #define UART_MOD_CNTRL 0x100 /* Module Control */
/* memory-mapped read/write of the port */ /* memory-mapped read/write of the port */
#define UART16550_READ(y) (inl(DEBUG_BASE + y) & 0xff) #define UART16550_READ(y) (au_readl(DEBUG_BASE + y) & 0xff)
#define UART16550_WRITE(y,z) (outl(z&0xff, DEBUG_BASE + y)) #define UART16550_WRITE(y,z) (au_writel(z&0xff, DEBUG_BASE + y))
extern unsigned long get_au1x00_uart_baud_base(void);
extern unsigned long cal_r4koff(void);
void debugInit(uint32 baud, uint8 data, uint8 parity, uint8 stop) void debugInit(uint32 baud, uint8 data, uint8 parity, uint8 stop)
{ {
...@@ -68,16 +71,16 @@ void debugInit(uint32 baud, uint8 data, uint8 parity, uint8 stop) ...@@ -68,16 +71,16 @@ void debugInit(uint32 baud, uint8 data, uint8 parity, uint8 stop)
UART16550_WRITE(UART_IER, 0); UART16550_WRITE(UART_IER, 0);
/* set up baud rate */ /* set up baud rate */
{ {
uint32 divisor; uint32 divisor;
/* set divisor */ /* set divisor */
divisor = get_au1000_uart_baud() / baud; divisor = get_au1x00_uart_baud_base() / baud;
UART16550_WRITE(UART_CLK, divisor & 0xffff); UART16550_WRITE(UART_CLK, divisor & 0xffff);
} }
/* set data format */ /* set data format */
UART16550_WRITE(UART_LCR, data | parity | stop); UART16550_WRITE(UART_LCR, (data | parity | stop));
} }
static int remoteDebugInitialized = 0; static int remoteDebugInitialized = 0;
...@@ -99,7 +102,8 @@ uint8 getDebugChar(void) ...@@ -99,7 +102,8 @@ uint8 getDebugChar(void)
int putDebugChar(uint8 byte) int putDebugChar(uint8 byte)
{ {
int i; // int i;
if (!remoteDebugInitialized) { if (!remoteDebugInitialized) {
remoteDebugInitialized = 1; remoteDebugInitialized = 1;
debugInit(UART16550_BAUD_115200, debugInit(UART16550_BAUD_115200,
......
/*
*
* BRIEF MODULE DESCRIPTION
* A DMA channel allocator for Au1000. API is modeled loosely off of
* linux/kernel/dma.c.
*
* Copyright 2000 MontaVista Software Inc.
* Author: MontaVista Software, Inc.
* stevel@mvista.com or source@mvista.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.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/delay.h>
#include <asm/au1000.h>
#include <asm/au1000_dma.h>
#include <asm/system.h>
/*
* A note on resource allocation:
*
* All drivers needing DMA channels, should allocate and release them
* through the public routines `request_dma()' and `free_dma()'.
*
* In order to avoid problems, all processes should allocate resources in
* the same sequence and release them in the reverse order.
*
* So, when allocating DMAs and IRQs, first allocate the DMA, then the IRQ.
* When releasing them, first release the IRQ, then release the DMA. The
* main reason for this order is that, if you are requesting the DMA buffer
* done interrupt, you won't know the irq number until the DMA channel is
* returned from request_dma.
*/
spinlock_t au1000_dma_spin_lock = SPIN_LOCK_UNLOCKED;
struct dma_chan au1000_dma_table[NUM_AU1000_DMA_CHANNELS] = {
{dev_id:-1,},
{dev_id:-1,},
{dev_id:-1,},
{dev_id:-1,},
{dev_id:-1,},
{dev_id:-1,},
{dev_id:-1,},
{dev_id:-1,}
};
// Device FIFO addresses and default DMA modes
static const struct {
unsigned int fifo_addr;
unsigned int dma_mode;
} dma_dev_table[DMA_NUM_DEV] = {
{UART0_ADDR + UART_TX, 0},
{UART0_ADDR + UART_RX, 0},
{0, 0},
{0, 0},
{AC97C_DATA, DMA_DW16 }, // coherent
{AC97C_DATA, DMA_DR | DMA_DW16 }, // coherent
{UART3_ADDR + UART_TX, DMA_DW8 | DMA_NC},
{UART3_ADDR + UART_RX, DMA_DR | DMA_DW8 | DMA_NC},
{USBD_EP0RD, DMA_DR | DMA_DW8 | DMA_NC},
{USBD_EP0WR, DMA_DW8 | DMA_NC},
{USBD_EP2WR, DMA_DW8 | DMA_NC},
{USBD_EP3WR, DMA_DW8 | DMA_NC},
{USBD_EP4RD, DMA_DR | DMA_DW8 | DMA_NC},
{USBD_EP5RD, DMA_DR | DMA_DW8 | DMA_NC},
{I2S_DATA, DMA_DW32 | DMA_NC},
{I2S_DATA, DMA_DR | DMA_DW32 | DMA_NC}
};
int au1000_dma_read_proc(char *buf, char **start, off_t fpos,
int length, int *eof, void *data)
{
int i, len = 0;
struct dma_chan *chan;
for (i = 0; i < NUM_AU1000_DMA_CHANNELS; i++) {
if ((chan = get_dma_chan(i)) != NULL) {
len += sprintf(buf + len, "%2d: %s\n",
i, chan->dev_str);
}
}
if (fpos >= len) {
*start = buf;
*eof = 1;
return 0;
}
*start = buf + fpos;
if ((len -= fpos) > length)
return length;
*eof = 1;
return len;
}
void dump_au1000_dma_channel(unsigned int dmanr)
{
struct dma_chan *chan;
if (dmanr > NUM_AU1000_DMA_CHANNELS)
return;
chan = &au1000_dma_table[dmanr];
printk(KERN_INFO "Au1000 DMA%d Register Dump:\n", dmanr);
printk(KERN_INFO " mode = 0x%08x\n",
au_readl(chan->io + DMA_MODE_SET));
printk(KERN_INFO " addr = 0x%08x\n",
au_readl(chan->io + DMA_PERIPHERAL_ADDR));
printk(KERN_INFO " start0 = 0x%08x\n",
au_readl(chan->io + DMA_BUFFER0_START));
printk(KERN_INFO " start1 = 0x%08x\n",
au_readl(chan->io + DMA_BUFFER1_START));
printk(KERN_INFO " count0 = 0x%08x\n",
au_readl(chan->io + DMA_BUFFER0_COUNT));
printk(KERN_INFO " count1 = 0x%08x\n",
au_readl(chan->io + DMA_BUFFER1_COUNT));
}
/*
* Finds a free channel, and binds the requested device to it.
* Returns the allocated channel number, or negative on error.
* Requests the DMA done IRQ if irqhandler != NULL.
*/
int request_au1000_dma(int dev_id, const char *dev_str,
void (*irqhandler)(int, void *, struct pt_regs *),
unsigned long irqflags,
void *irq_dev_id)
{
struct dma_chan *chan;
int i, ret;
if (dev_id < 0 || dev_id >= DMA_NUM_DEV)
return -EINVAL;
for (i = 0; i < NUM_AU1000_DMA_CHANNELS; i++) {
if (au1000_dma_table[i].dev_id < 0)
break;
}
if (i == NUM_AU1000_DMA_CHANNELS)
return -ENODEV;
chan = &au1000_dma_table[i];
if (irqhandler) {
chan->irq = AU1000_DMA_INT_BASE + i;
chan->irq_dev = irq_dev_id;
if ((ret = request_irq(chan->irq, irqhandler, irqflags,
dev_str, chan->irq_dev))) {
chan->irq = 0;
chan->irq_dev = NULL;
return ret;
}
} else {
chan->irq = 0;
chan->irq_dev = NULL;
}
// fill it in
chan->io = DMA_CHANNEL_BASE + i * DMA_CHANNEL_LEN;
chan->dev_id = dev_id;
chan->dev_str = dev_str;
chan->fifo_addr = dma_dev_table[dev_id].fifo_addr;
chan->mode = dma_dev_table[dev_id].dma_mode;
/* initialize the channel before returning */
init_dma(i);
return i;
}
void free_au1000_dma(unsigned int dmanr)
{
struct dma_chan *chan = get_dma_chan(dmanr);
if (!chan) {
printk("Trying to free DMA%d\n", dmanr);
return;
}
disable_dma(dmanr);
if (chan->irq)
free_irq(chan->irq, chan->irq_dev);
chan->irq = 0;
chan->irq_dev = NULL;
chan->dev_id = -1;
}
...@@ -9,7 +9,6 @@ ...@@ -9,7 +9,6 @@
* Free Software Foundation; either version 2 of the License, or (at your * Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. * option) any later version.
*/ */
#include <linux/config.h>
#include <asm/asm.h> #include <asm/asm.h>
#include <asm/mipsregs.h> #include <asm/mipsregs.h>
#include <asm/addrspace.h> #include <asm/addrspace.h>
...@@ -40,32 +39,30 @@ NESTED(au1000_IRQ, PT_SIZE, sp) ...@@ -40,32 +39,30 @@ NESTED(au1000_IRQ, PT_SIZE, sp)
1: 1:
andi a0, t0, CAUSEF_IP2 # Interrupt Controller 0, Request 0 andi a0, t0, CAUSEF_IP2 # Interrupt Controller 0, Request 0
beq a0, zero, 2f beq a0, zero, 2f
move a0,sp move a0,sp
jal intc0_req0_irqdispatch jal intc0_req0_irqdispatch
j ret_from_irq j ret_from_irq
2: 2:
andi a0, t0, CAUSEF_IP3 # Interrupt Controller 0, Request 1 andi a0, t0, CAUSEF_IP3 # Interrupt Controller 0, Request 1
beq a0, zero, 3f beq a0, zero, 3f
move a0,sp move a0,sp
jal intc0_req1_irqdispatch jal intc0_req1_irqdispatch
j ret_from_irq j ret_from_irq
3: 3:
andi a0, t0, CAUSEF_IP4 # Interrupt Controller 1, Request 0 andi a0, t0, CAUSEF_IP4 # Interrupt Controller 1, Request 0
beq a0, zero, 4f beq a0, zero, 4f
move a0,sp move a0,sp
jal intc1_req0_irqdispatch jal intc1_req0_irqdispatch
j ret_from_irq j ret_from_irq
4: 4:
andi a0, t0, CAUSEF_IP5 # Interrupt Controller 1, Request 1 andi a0, t0, CAUSEF_IP5 # Interrupt Controller 1, Request 1
beq a0, zero, 5f beq a0, zero, 5f
move a0, sp move a0, sp
jal intc1_req1_irqdispatch jal intc1_req1_irqdispatch
j ret_from_irq j ret_from_irq
5: 5:
move a0, sp move a0, sp
jal mips_spurious_interrupt j spurious_interrupt
done:
j ret_from_irq
END(au1000_IRQ) END(au1000_IRQ)
This diff is collapsed.
/*
* BRIEF MODULE DESCRIPTION
* Au1000 Power Management routines.
*
* Copyright 2001 MontaVista Software Inc.
* Author: MontaVista Software, Inc.
* ppopov@mvista.com or source@mvista.com
*
* Some of the routines are right out of init/main.c, whose
* copyrights apply here.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/config.h>
#include <linux/init.h>
#include <linux/pm.h>
#include <linux/slab.h>
#include <linux/sysctl.h>
#include <asm/string.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/au1000.h>
#define DEBUG 1
#ifdef DEBUG
# define DPRINTK(fmt, args...) printk("%s: " fmt, __FUNCTION__ , ## args)
#else
# define DPRINTK(fmt, args...)
#endif
extern void au1k_wait(void);
static void calibrate_delay(void);
extern void set_au1000_speed(unsigned int new_freq);
extern unsigned int get_au1000_speed(void);
extern unsigned long get_au1000_uart_baud_base(void);
extern void set_au1000_uart_baud_base(unsigned long new_baud_base);
extern unsigned long save_local_and_disable(int controller);
extern void restore_local_and_enable(int controller, unsigned long mask);
extern void local_enable_irq(unsigned int irq_nr);
/* Quick acpi hack. This will have to change! */
#define CTL_ACPI 9999
#define ACPI_S1_SLP_TYP 19
#define ACPI_SLEEP 21
#ifdef CONFIG_PM
static spinlock_t pm_lock = SPIN_LOCK_UNLOCKED;
unsigned long suspend_mode;
void wakeup_from_suspend(void)
{
suspend_mode = 0;
}
int au_sleep(void)
{
unsigned long wakeup, flags;
spin_lock_irqsave(&pm_lock,flags);
flush_cache_all();
/* pin 6 is gpio */
au_writel(au_readl(SYS_PINSTATERD) & ~(1 << 11), SYS_PINSTATERD);
/* gpio 6 can cause a wake up event */
wakeup = au_readl(SYS_WAKEMSK);
wakeup &= ~(1 << 8); /* turn off match20 wakeup */
wakeup |= 1 << 6; /* turn on gpio 6 wakeup */
au_writel(wakeup, SYS_WAKEMSK);
au_writel(1, SYS_WAKESRC); /* clear cause */
au_writel(1, SYS_SLPPWR); /* prepare to sleep */
__asm__("la $4, 1f\n\t"
"lui $5, 0xb190\n\t"
"ori $5, 0x18\n\t"
"sw $4, 0($5)\n\t"
"li $4, 1\n\t"
"lui $5, 0xb190\n\t"
"ori $5, 0x7c\n\t"
"sw $4, 0($5)\n\t" "sync\n\t" "1:\t\n\t" "nop\n\t");
/* after a wakeup, the cpu vectors back to 0x1fc00000 so
* it's up to the boot code to get us back here.
*/
spin_unlock_irqrestore(&pm_lock, flags);
return 0;
}
static int pm_do_sleep(ctl_table * ctl, int write, struct file *file,
void *buffer, size_t * len)
{
int retval = 0;
if (!write) {
*len = 0;
} else {
retval = pm_send_all(PM_SUSPEND, (void *) 2);
if (retval)
return retval;
au_sleep();
retval = pm_send_all(PM_RESUME, (void *) 0);
}
return retval;
}
static int pm_do_suspend(ctl_table * ctl, int write, struct file *file,
void *buffer, size_t * len)
{
int retval = 0;
if (!write) {
*len = 0;
} else {
retval = pm_send_all(PM_SUSPEND, (void *) 2);
if (retval)
return retval;
suspend_mode = 1;
au1k_wait();
retval = pm_send_all(PM_RESUME, (void *) 0);
}
return retval;
}
static int pm_do_freq(ctl_table * ctl, int write, struct file *file,
void *buffer, size_t * len)
{
int retval = 0, i;
unsigned long val, pll;
#define TMPBUFLEN 64
#define MAX_CPU_FREQ 396
char buf[8], *p;
unsigned long flags, intc0_mask, intc1_mask;
unsigned long old_baud_base, old_cpu_freq, baud_rate, old_clk,
old_refresh;
unsigned long new_baud_base, new_cpu_freq, new_clk, new_refresh;
spin_lock_irqsave(&pm_lock, flags);
if (!write) {
*len = 0;
} else {
/* Parse the new frequency */
if (*len > TMPBUFLEN - 1) {
spin_unlock_irqrestore(&pm_lock, flags);
return -EFAULT;
}
if (copy_from_user(buf, buffer, *len)) {
spin_unlock_irqrestore(&pm_lock, flags);
return -EFAULT;
}
buf[*len] = 0;
p = buf;
val = simple_strtoul(p, &p, 0);
if (val > MAX_CPU_FREQ) {
spin_unlock_irqrestore(&pm_lock, flags);
return -EFAULT;
}
pll = val / 12;
if ((pll > 33) || (pll < 7)) { /* 396 MHz max, 84 MHz min */
/* revisit this for higher speed cpus */
spin_unlock_irqrestore(&pm_lock, flags);
return -EFAULT;
}
old_baud_base = get_au1000_uart_baud_base();
old_cpu_freq = get_au1000_speed();
new_cpu_freq = pll * 12 * 1000000;
new_baud_base = (new_cpu_freq / 4) / 16;
set_au1000_speed(new_cpu_freq);
set_au1000_uart_baud_base(new_baud_base);
old_refresh = au_readl(MEM_SDREFCFG) & 0x1ffffff;
new_refresh =
((old_refresh * new_cpu_freq) /
old_cpu_freq) | (au_readl(MEM_SDREFCFG) & ~0x1ffffff);
au_writel(pll, SYS_CPUPLL);
au_sync_delay(1);
au_writel(new_refresh, MEM_SDREFCFG);
au_sync_delay(1);
for (i = 0; i < 4; i++) {
if (au_readl
(UART_BASE + UART_MOD_CNTRL +
i * 0x00100000) == 3) {
old_clk =
au_readl(UART_BASE + UART_CLK +
i * 0x00100000);
// baud_rate = baud_base/clk
baud_rate = old_baud_base / old_clk;
/* we won't get an exact baud rate and the error
* could be significant enough that our new
* calculation will result in a clock that will
* give us a baud rate that's too far off from
* what we really want.
*/
if (baud_rate > 100000)
baud_rate = 115200;
else if (baud_rate > 50000)
baud_rate = 57600;
else if (baud_rate > 30000)
baud_rate = 38400;
else if (baud_rate > 17000)
baud_rate = 19200;
else
(baud_rate = 9600);
// new_clk = new_baud_base/baud_rate
new_clk = new_baud_base / baud_rate;
au_writel(new_clk,
UART_BASE + UART_CLK +
i * 0x00100000);
au_sync_delay(10);
}
}
}
/* We don't want _any_ interrupts other than
* match20. Otherwise our calibrate_delay()
* calculation will be off, potentially a lot.
*/
intc0_mask = save_local_and_disable(0);
intc1_mask = save_local_and_disable(1);
local_enable_irq(AU1000_TOY_MATCH2_INT);
spin_unlock_irqrestore(&pm_lock, flags);
calibrate_delay();
restore_local_and_enable(0, intc0_mask);
restore_local_and_enable(1, intc1_mask);
return retval;
}
static struct ctl_table pm_table[] = {
{ACPI_S1_SLP_TYP, "suspend", NULL, 0, 0600, NULL, &pm_do_suspend},
{ACPI_SLEEP, "sleep", NULL, 0, 0600, NULL, &pm_do_sleep},
{CTL_ACPI, "freq", NULL, 0, 0600, NULL, &pm_do_freq},
{0}
};
static struct ctl_table pm_dir_table[] = {
{CTL_ACPI, "pm", NULL, 0, 0555, pm_table},
{0}
};
/*
* Initialize power interface
*/
static int __init pm_init(void)
{
register_sysctl_table(pm_dir_table, 1);
return 0;
}
__initcall(pm_init);
/*
* This is right out of init/main.c
*/
/* This is the number of bits of precision for the loops_per_jiffy. Each
bit takes on average 1.5/HZ seconds. This (like the original) is a little
better than 1% */
#define LPS_PREC 8
static void calibrate_delay(void)
{
unsigned long ticks, loopbit;
int lps_precision = LPS_PREC;
loops_per_jiffy = (1 << 12);
while (loops_per_jiffy <<= 1) {
/* wait for "start of" clock tick */
ticks = jiffies;
while (ticks == jiffies)
/* nothing */ ;
/* Go .. */
ticks = jiffies;
__delay(loops_per_jiffy);
ticks = jiffies - ticks;
if (ticks)
break;
}
/* Do a binary approximation to get loops_per_jiffy set to equal one clock
(up to lps_precision bits) */
loops_per_jiffy >>= 1;
loopbit = loops_per_jiffy;
while (lps_precision-- && (loopbit >>= 1)) {
loops_per_jiffy |= loopbit;
ticks = jiffies;
while (ticks == jiffies);
ticks = jiffies;
__delay(loops_per_jiffy);
if (jiffies != ticks) /* longer than 1 tick */
loops_per_jiffy &= ~loopbit;
}
}
void au1k_wait(void)
{
__asm__("nop\n\t" "nop\n\t");
}
#endif /* CONFIG_PM */
...@@ -4,11 +4,11 @@ ...@@ -4,11 +4,11 @@
* PROM library initialisation code, assuming a version of * PROM library initialisation code, assuming a version of
* pmon is the boot code. * pmon is the boot code.
* *
* Copyright 2000 MontaVista Software Inc. * Copyright 2000,2001 MontaVista Software Inc.
* Author: MontaVista Software, Inc. * Author: MontaVista Software, Inc.
* ppopov@mvista.com or source@mvista.com * ppopov@mvista.com or source@mvista.com
* *
* This file was derived from Carsten Langgaard's * This file was derived from Carsten Langgaard's
* arch/mips/mips-boards/xx files. * arch/mips/mips-boards/xx files.
* *
* Carsten Langgaard, carstenl@mips.com * Carsten Langgaard, carstenl@mips.com
...@@ -35,7 +35,7 @@ ...@@ -35,7 +35,7 @@
* 675 Mass Ave, Cambridge, MA 02139, USA. * 675 Mass Ave, Cambridge, MA 02139, USA.
*/ */
#include <linux/config.h> #include <linux/module.h>
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/init.h> #include <linux/init.h>
#include <linux/string.h> #include <linux/string.h>
...@@ -44,22 +44,23 @@ ...@@ -44,22 +44,23 @@
/* #define DEBUG_CMDLINE */ /* #define DEBUG_CMDLINE */
char arcs_cmdline[COMMAND_LINE_SIZE]; char arcs_cmdline[CL_SIZE];
int prom_argc; extern int prom_argc;
char **prom_argv, **prom_envp; extern char **prom_argv, **prom_envp;
typedef struct { typedef struct
char *name; {
/* char *val; */ char *name;
} t_env_var; /* char *val; */
}t_env_var;
char * __init prom_getcmdline(void) char * prom_getcmdline(void)
{ {
return &(arcs_cmdline[0]); return &(arcs_cmdline[0]);
} }
void __init prom_init_cmdline(void) void prom_init_cmdline(void)
{ {
char *cp; char *cp;
int actr; int actr;
...@@ -101,20 +102,57 @@ char *prom_getenv(char *envname) ...@@ -101,20 +102,57 @@ char *prom_getenv(char *envname)
return(NULL); return(NULL);
} }
static inline unsigned char str2hexnum(unsigned char c) inline unsigned char str2hexnum(unsigned char c)
{ {
if(c >= '0' && c <= '9') if(c >= '0' && c <= '9')
return c - '0'; return c - '0';
if(c >= 'a' && c <= 'f') if(c >= 'a' && c <= 'f')
return c - 'a' + 10; return c - 'a' + 10;
if(c >= 'A' && c <= 'F')
return c - 'A' + 10;
return 0; /* foo */ return 0; /* foo */
} }
int __init page_is_ram(unsigned long pagenr) inline void str2eaddr(unsigned char *ea, unsigned char *str)
{ {
return 1; int i;
for(i = 0; i < 6; i++) {
unsigned char num;
if((*str == '.') || (*str == ':'))
str++;
num = str2hexnum(*str++) << 4;
num |= (str2hexnum(*str++));
ea[i] = num;
}
} }
void prom_free_prom_memory (void) int get_ethernet_addr(char *ethernet_addr)
{ {
char *ethaddr_str;
ethaddr_str = prom_getenv("ethaddr");
if (!ethaddr_str) {
printk("ethaddr not set in boot prom\n");
return -1;
}
str2eaddr(ethernet_addr, ethaddr_str);
#if 0
{
int i;
printk("get_ethernet_addr: ");
for (i=0; i<5; i++)
printk("%02x:", (unsigned char)*(ethernet_addr+i));
printk("%02x\n", *(ethernet_addr+i));
}
#endif
return 0;
} }
void prom_free_prom_memory (void) {}
EXPORT_SYMBOL(prom_getcmdline);
EXPORT_SYMBOL(get_ethernet_addr);
...@@ -29,8 +29,9 @@ ...@@ -29,8 +29,9 @@
*/ */
#include <linux/types.h> #include <linux/types.h>
#include <asm/au1000.h>
#define SERIAL_BASE 0xB1100000 /* au1000, uart 0 */ #define SERIAL_BASE UART_BASE
#define SER_CMD 0x7 #define SER_CMD 0x7
#define SER_DATA 0x1 #define SER_DATA 0x1
#define TX_BUSY 0x20 #define TX_BUSY 0x20
......
...@@ -27,7 +27,7 @@ ...@@ -27,7 +27,7 @@
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA. * 675 Mass Ave, Cambridge, MA 02139, USA.
*/ */
#include <linux/config.h>
#include <linux/sched.h> #include <linux/sched.h>
#include <linux/mm.h> #include <linux/mm.h>
#include <asm/io.h> #include <asm/io.h>
...@@ -35,23 +35,107 @@ ...@@ -35,23 +35,107 @@
#include <asm/processor.h> #include <asm/processor.h>
#include <asm/reboot.h> #include <asm/reboot.h>
#include <asm/system.h> #include <asm/system.h>
#include <asm/au1000.h>
extern int au_sleep(void);
void au1000_restart(char *command) void au1000_restart(char *command)
{ {
set_cp0_status(ST0_BEV | ST0_ERL); /* Set all integrated peripherals to disabled states */
set_cp0_config(CONF_CM_UNCACHED); u32 prid = read_c0_prid();
printk(KERN_NOTICE "\n** Resetting Integrated Peripherals\n");
switch (prid & 0xFF000000)
{
case 0x00000000: /* Au1000 */
au_writel(0x02, 0xb0000010); /* ac97_enable */
au_writel(0x08, 0xb017fffc); /* usbh_enable - early errata */
asm("sync");
au_writel(0x00, 0xb017fffc); /* usbh_enable */
au_writel(0x00, 0xb0200058); /* usbd_enable */
au_writel(0x00, 0xb0300040); /* ir_enable */
au_writel(0x00, 0xb0520000); /* macen0 */
au_writel(0x00, 0xb0520004); /* macen1 */
au_writel(0x00, 0xb1000008); /* i2s_enable */
au_writel(0x00, 0xb1100100); /* uart0_enable */
au_writel(0x00, 0xb1200100); /* uart1_enable */
au_writel(0x00, 0xb1300100); /* uart2_enable */
au_writel(0x00, 0xb1400100); /* uart3_enable */
au_writel(0x02, 0xb1600100); /* ssi0_enable */
au_writel(0x02, 0xb1680100); /* ssi1_enable */
au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */
au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */
au_writel(0x00, 0xb1900028); /* sys_clksrc */
au_writel(0x00, 0xb1900100); /* sys_pininputen */
break;
case 0x01000000: /* Au1500 */
au_writel(0x02, 0xb0000010); /* ac97_enable */
au_writel(0x08, 0xb017fffc); /* usbh_enable - early errata */
asm("sync");
au_writel(0x00, 0xb017fffc); /* usbh_enable */
au_writel(0x00, 0xb0200058); /* usbd_enable */
au_writel(0x00, 0xb1520000); /* macen0 */
au_writel(0x00, 0xb1520004); /* macen1 */
au_writel(0x00, 0xb1100100); /* uart0_enable */
au_writel(0x00, 0xb1400100); /* uart3_enable */
au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */
au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */
au_writel(0x00, 0xb1900028); /* sys_clksrc */
au_writel(0x00, 0xb1900100); /* sys_pininputen */
break;
case 0x02000000: /* Au1100 */
au_writel(0x02, 0xb0000010); /* ac97_enable */
au_writel(0x08, 0xb017fffc); /* usbh_enable - early errata */
asm("sync");
au_writel(0x00, 0xb017fffc); /* usbh_enable */
au_writel(0x00, 0xb0200058); /* usbd_enable */
au_writel(0x00, 0xb0300040); /* ir_enable */
au_writel(0x00, 0xb0520000); /* macen0 */
au_writel(0x00, 0xb1000008); /* i2s_enable */
au_writel(0x00, 0xb1100100); /* uart0_enable */
au_writel(0x00, 0xb1200100); /* uart1_enable */
au_writel(0x00, 0xb1400100); /* uart3_enable */
au_writel(0x02, 0xb1600100); /* ssi0_enable */
au_writel(0x02, 0xb1680100); /* ssi1_enable */
au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */
au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */
au_writel(0x00, 0xb1900028); /* sys_clksrc */
au_writel(0x00, 0xb1900100); /* sys_pininputen */
break;
default:
break;
}
set_c0_status(ST0_BEV | ST0_ERL);
set_c0_config(CONF_CM_UNCACHED);
flush_cache_all(); flush_cache_all();
write_32bit_cp0_register(CP0_WIRED, 0); write_c0_wired(0);
#if defined(CONFIG_MIPS_PB1500) || defined(CONFIG_MIPS_PB1100) || defined(CONFIG_MIPS_DB1000) || defined(CONFIG_MIPS_DB1100) || defined(CONFIG_MIPS_DB1500)
/* Do a HW reset if the board can do it */
au_writel(0x00000000, 0xAE00001C);
#endif
__asm__ __volatile__("jr\t%0"::"r"(0xbfc00000)); __asm__ __volatile__("jr\t%0"::"r"(0xbfc00000));
} }
void au1000_halt(void) void au1000_halt(void)
{ {
printk(KERN_NOTICE "\n** You can safely turn off the power\n"); printk(KERN_NOTICE "\n** You can safely turn off the power\n");
#ifdef CONFIG_PM
au_sleep();
/* should not get here */
printk(KERN_ERR "Unable to put cpu in sleep mode\n");
while(1);
#else
while (1) while (1)
__asm__(".set\tmips3\n\t" __asm__(".set\tmips3\n\t"
"wait\n\t" "wait\n\t"
".set\tmips0"); ".set\tmips0");
#endif
} }
void au1000_power_off(void) void au1000_power_off(void)
......
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* RTC routines for PC style attached Dallas chip.
*
* Copyright (C) 1998, 2001 by Ralf Baechle
*/
#include <linux/mc146818rtc.h>
#include <asm/io.h>
#include <asm/au1000.h>
#define PB1500_RTC_ADDR 0xAC000000
unsigned char std_rtc_read_data(unsigned long offset)
{
offset <<= 2;
return (u8)(au_readl(offset + PB1500_RTC_ADDR) & 0xff);
}
static void std_rtc_write_data(unsigned char data, unsigned long offset)
{
offset <<= 2;
au_writel(data, offset + PB1500_RTC_ADDR);
}
static int std_rtc_bcd_mode(void)
{
return 1;
}
struct rtc_ops pb1500_rtc_ops = {
&std_rtc_read_data,
&std_rtc_write_data,
&std_rtc_bcd_mode
};
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#
# Copyright 2000 MontaVista Software Inc.
# Author: MontaVista Software, Inc.
# ppopov@mvista.com or source@mvista.com
#
# Makefile for the Alchemy Semiconductor PB1000 board.
#
# Note! Dependencies are done automagically by 'make dep', which also
# removes any old dependencies. DON'T put your own dependencies here
# unless it's something special (ie not a .c file).
#
.S.s:
$(CPP) $(CFLAGS) $< -o $*.s
.S.o:
$(CC) $(CFLAGS) -c $< -o $*.o
O_TARGET := db1x00.o
obj-y := init.o setup.o
/*
*
* BRIEF MODULE DESCRIPTION
* PB1000 board setup
*
* Copyright 2001 MontaVista Software Inc.
* Author: MontaVista Software, Inc.
* ppopov@mvista.com or source@mvista.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.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/bootmem.h>
#include <asm/addrspace.h>
#include <asm/bootinfo.h>
#include <linux/config.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/sched.h>
int prom_argc;
char **prom_argv, **prom_envp;
extern void __init prom_init_cmdline(void);
extern char *prom_getenv(char *envname);
const char *get_system_type(void)
{
return "Alchemy Db1000";
}
int __init prom_init(int argc, char **argv, char **envp, int *prom_vec)
{
unsigned char *memsize_str;
unsigned long memsize;
prom_argc = argc;
prom_argv = argv;
prom_envp = envp;
mips_machgroup = MACH_GROUP_ALCHEMY;
mips_machtype = MACH_DB1000; /* set the platform # */
prom_init_cmdline();
memsize_str = prom_getenv("memsize");
if (!memsize_str) {
memsize = 0x04000000;
} else {
memsize = simple_strtol(memsize_str, NULL, 0);
}
add_memory_region(0, memsize, BOOT_MEM_RAM);
return 0;
}
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...@@ -5,5 +5,13 @@ ...@@ -5,5 +5,13 @@
# #
# Makefile for the Alchemy Semiconductor PB1000 board. # Makefile for the Alchemy Semiconductor PB1000 board.
# #
# Note! Dependencies are done automagically by 'make dep', which also
# removes any old dependencies. DON'T put your own dependencies here
# unless it's something special (ie not a .c file).
#
USE_STANDARD_AS_RULE := true
O_TARGET := pb1000.o
obj-y := init.o setup.o obj-y := init.o setup.o
...@@ -33,27 +33,39 @@ ...@@ -33,27 +33,39 @@
#include <linux/bootmem.h> #include <linux/bootmem.h>
#include <asm/addrspace.h> #include <asm/addrspace.h>
#include <asm/bootinfo.h> #include <asm/bootinfo.h>
#include <linux/config.h>
#include <linux/string.h> #include <linux/string.h>
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/sched.h> #include <linux/sched.h>
extern int prom_argc; int prom_argc;
extern char **prom_argv, **prom_envp; char **prom_argv, **prom_envp;
extern void __init prom_init_cmdline(void); extern void __init prom_init_cmdline(void);
extern char *prom_getenv(char *envname);
const char *get_system_type(void)
{
return "Alchemy Pb1000";
}
int __init prom_init(int argc, char **argv, char **envp, int *prom_vec) int __init prom_init(int argc, char **argv, char **envp, int *prom_vec)
{ {
unsigned char *memsize_str;
unsigned long memsize;
prom_argc = argc; prom_argc = argc;
prom_argv = argv; prom_argv = argv;
prom_envp = envp; prom_envp = envp;
mips_machgroup = MACH_GROUP_ALCHEMY; mips_machgroup = MACH_GROUP_ALCHEMY;
mips_machtype = MACH_PB1000; mips_machtype = MACH_PB1000;
prom_init_cmdline(); prom_init_cmdline();
memsize_str = prom_getenv("memsize");
add_memory_region(1, 64 << 20, BOOT_MEM_RAM); if (!memsize_str) {
memsize = 0x04000000;
} else {
memsize = simple_strtol(memsize_str, NULL, 0);
}
add_memory_region(0, memsize, BOOT_MEM_RAM);
return 0; return 0;
} }
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#
# Copyright 2000,2001 MontaVista Software Inc.
# Author: MontaVista Software, Inc.
# ppopov@mvista.com or source@mvista.com
#
# Makefile for the Alchemy Semiconductor Pb1100 board.
#
# Note! Dependencies are done automagically by 'make dep', which also
# removes any old dependencies. DON'T put your own dependencies here
# unless it's something special (ie not a .c file).
#
USE_STANDARD_AS_RULE := true
O_TARGET := pb1100.o
obj-y := init.o setup.o
/*
*
* BRIEF MODULE DESCRIPTION
* Pb1100 board setup
*
* Copyright 2002 MontaVista Software Inc.
* Author: MontaVista Software, Inc.
* ppopov@mvista.com or source@mvista.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.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/bootmem.h>
#include <asm/addrspace.h>
#include <asm/bootinfo.h>
#include <linux/config.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/sched.h>
int prom_argc;
char **prom_argv, **prom_envp;
extern void __init prom_init_cmdline(void);
extern char *prom_getenv(char *envname);
const char *get_system_type(void)
{
return "Alchemy Pb1100";
}
int __init prom_init(int argc, char **argv, char **envp, int *prom_vec)
{
unsigned char *memsize_str;
unsigned long memsize;
prom_argc = argc;
prom_argv = argv;
prom_envp = envp;
mips_machgroup = MACH_GROUP_ALCHEMY;
mips_machtype = MACH_PB1100;
prom_init_cmdline();
memsize_str = prom_getenv("memsize");
if (!memsize_str) {
memsize = 0x04000000;
} else {
memsize = simple_strtol(memsize_str, NULL, 0);
}
add_memory_region(0, memsize, BOOT_MEM_RAM);
return 0;
}
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