len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2025-10-13 18:17:39 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

PNX0101 changes:

Browse source 
Make PNX0101-specific system.c and crt0.S.
Add new register names from LPC2880 user manual.
Add support for timer.
Enable CPU frequency changing. 


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12904 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Tomasz Malesinski 2007-03-24 19:26:13 +00:00
parent 7d9ff93b79
commit cd630c9e0a
12 changed files with 795 additions and 127 deletions
Download patch file Download diff file Expand all files Collapse all files

87
firmware/system.c
View file

@ -982,93 +982,6 @@ int system_memory_guard(int newmode)
return 0;
}
#elif CONFIG_CPU==PNX0101
interrupt_handler_t interrupt_vector[0x1d] __attribute__ ((section(".idata")));
#define IRQ_REG(reg) (*(volatile unsigned long *)(0x80300000 + (reg)))
static inline unsigned long irq_read(int reg)
{
unsigned long v, v2;
do
{
v = IRQ_REG(reg);
v2 = IRQ_REG(reg);
} while (v != v2);
return v;
}
#define IRQ_WRITE_WAIT(reg, val, cond) \
do { unsigned long v, v2; \
do { \
IRQ_REG(reg) = (val); \
v = IRQ_REG(reg); \
v2 = IRQ_REG(reg); \
} while ((v != v2) || !(cond)); \
} while (0);
static void undefined_int(void)
{
}
void irq(void)
{
int n = irq_read(0x100) >> 3;
(*(interrupt_vector[n]))();
}
void fiq(void)
{
}
void irq_enable_int(int n)
{
IRQ_WRITE_WAIT(0x404 + n * 4, 0x4010000, v & 0x10000);
}
void irq_set_int_handler(int n, interrupt_handler_t handler)
{
interrupt_vector[n + 1] = handler;
}
void system_init(void)
{
int i;
/* turn off watchdog */
(*(volatile unsigned long *)0x80002804) = 0;
/*
IRQ_WRITE_WAIT(0x100, 0, v == 0);
IRQ_WRITE_WAIT(0x104, 0, v == 0);
IRQ_WRITE_WAIT(0, 0, v == 0);
IRQ_WRITE_WAIT(4, 0, v == 0);
*/
for (i = 0; i < 0x1c; i++)
{
IRQ_WRITE_WAIT(0x404 + i * 4, 0x1e000001, (v & 0x3010f) == 1);
IRQ_WRITE_WAIT(0x404 + i * 4, 0x4000000, (v & 0x10000) == 0);
IRQ_WRITE_WAIT(0x404 + i * 4, 0x10000001, (v & 0xf) == 1);
interrupt_vector[i + 1] = undefined_int;
}
interrupt_vector[0] = undefined_int;
}
void system_reboot(void)
{
(*(volatile unsigned long *)0x80002804) = 1;
while (1);
}
int system_memory_guard(int newmode)
{
(void)newmode;
return 0;
}
#endif /* CPU_ARM */
#endif /* CONFIG_CPU */