ldr pc, _software_interrupt
ldr pc, _prefetch_abort
ldr pc, _data_abort
+#ifdef CONFIG_LPC2292
+ .word 0xB4405F76 /* 2's complement of the checksum of the vectors */
+#else
ldr pc, _not_used
+#endif
ldr pc, _irq
ldr pc, _fiq
* we do sys-critical inits only at reboot,
* not when booting from ram!
*/
-#ifdef CONFIG_INIT_CRITICAL
+#ifndef CONFIG_SKIP_LOWLEVEL_INIT
bl cpu_init_crit
#endif
+#ifdef CONFIG_LPC2292
+ bl lowlevel_init
+#endif
+
+#ifndef CONFIG_SKIP_RELOCATE_UBOOT
relocate: /* relocate U-Boot to RAM */
adr r0, _start /* r0 <- current position of code */
ldr r1, _TEXT_BASE /* test if we run from flash or RAM */
beq stack_setup
#if TEXT_BASE
+#ifndef CONFIG_LPC2292 /* already done in lowlevel_init */
ldr r2, =0x0 /* Relocate the exception vectors */
cmp r1, r2 /* and associated data to address */
ldmneia r0!, {r3-r10} /* 0x0. Do nothing if TEXT_BASE is */
ldmneia r0, {r3-r9}
stmneia r2, {r3-r9}
adrne r0, _start /* restore r0 */
+#endif /* !CONFIG_LPC2292 */
#endif
ldr r2, _armboot_start
cmp r0, r2 /* until source end addreee [r2] */
ble copy_loop
+#endif /* CONFIG_SKIP_RELOCATE_UBOOT */
+
/* Set up the stack */
stack_setup:
ldr r0, _TEXT_BASE /* upper 128 KiB: relocated uboot */
clbss_l:str r2, [r0] /* clear loop... */
add r0, r0, #4
cmp r0, r1
- bne clbss_l
+ ble clbss_l
ldr pc, _start_armboot
*************************************************************************
*/
-#if defined(CONFIG_IMPA7) || defined(CONFIG_EP7312)
+#if defined(CONFIG_IMPA7) || defined(CONFIG_EP7312) || defined(CONFIG_ARMADILLO)
/* Interupt-Controller base addresses */
INTMR1: .word 0x80000280 @ 32 bit size
#define CLKCTL_49 0x4 /* 49.152 MHz */
#define CLKCTL_73 0x6 /* 73.728 MHz */
+#elif defined(CONFIG_LPC2292)
+PLLCFG_ADR: .word PLLCFG
+PLLFEED_ADR: .word PLLFEED
+PLLCON_ADR: .word PLLCON
+PLLSTAT_ADR: .word PLLSTAT
+VPBDIV_ADR: .word VPBDIV
+MEMMAP_ADR: .word MEMMAP
+
#endif
cpu_init_crit:
-#if defined(CONFIG_IMPA7) || defined(CONFIG_EP7312)
+#if defined(CONFIG_IMPA7) || defined(CONFIG_EP7312) || defined(CONFIG_ARMADILLO)
/*
* mask all IRQs by clearing all bits in the INTMRs
str r1, [r0, #+NETARM_GEN_SYSTEM_CONTROL]
+#ifndef CONFIG_NETARM_PLL_BYPASS
ldr r1, =( NETARM_GEN_PLL_CTL_PLLCNT(NETARM_PLL_COUNT_VAL) | \
NETARM_GEN_PLL_CTL_POLTST_DEF | \
NETARM_GEN_PLL_CTL_INDIV(1) | \
NETARM_GEN_PLL_CTL_ICP_DEF | \
NETARM_GEN_PLL_CTL_OUTDIV(2) )
str r1, [r0, #+NETARM_GEN_PLL_CONTROL]
+#endif
+
/*
* mask all IRQs by clearing all bits in the INTMRs
*/
ldr r1, =0x83ffffa0 /* cache-disabled */
str r1, [r0]
+#elif defined(CONFIG_INTEGRATOR) && defined(CONFIG_ARCH_INTEGRATOR)
+ /* No specific initialisation for IntegratorAP/CM720T as yet */
+#elif defined(CONFIG_LPC2292)
+ /* Set-up PLL */
+ mov r3, #0xAA
+ mov r4, #0x55
+ /* First disconnect and disable the PLL */
+ ldr r0, PLLCON_ADR
+ mov r1, #0x00
+ str r1, [r0]
+ ldr r0, PLLFEED_ADR /* start feed sequence */
+ str r3, [r0]
+ str r4, [r0] /* feed sequence done */
+ /* Set new M and P values */
+ ldr r0, PLLCFG_ADR
+ mov r1, #0x23 /* M=4 and P=2 */
+ str r1, [r0]
+ ldr r0, PLLFEED_ADR /* start feed sequence */
+ str r3, [r0]
+ str r4, [r0] /* feed sequence done */
+ /* Then enable the PLL */
+ ldr r0, PLLCON_ADR
+ mov r1, #0x01 /* PLL enable bit */
+ str r1, [r0]
+ ldr r0, PLLFEED_ADR /* start feed sequence */
+ str r3, [r0]
+ str r4, [r0] /* feed sequence done */
+ /* Wait for the lock */
+ ldr r0, PLLSTAT_ADR
+ mov r1, #0x400 /* lock bit */
+lock_loop:
+ ldr r2, [r0]
+ and r2, r1, r2
+ cmp r2, #0
+ beq lock_loop
+ /* And finally connect the PLL */
+ ldr r0, PLLCON_ADR
+ mov r1, #0x03 /* PLL enable bit and connect bit */
+ str r1, [r0]
+ ldr r0, PLLFEED_ADR /* start feed sequence */
+ str r3, [r0]
+ str r4, [r0] /* feed sequence done */
+ /* Set-up VPBDIV register */
+ ldr r0, VPBDIV_ADR
+ mov r1, #0x01 /* VPB clock is same as process clock */
+ str r1, [r0]
#else
#error No cpu_init_crit() defined for current CPU type
#endif
str r1, [r0]
#endif
+#ifndef CONFIG_LPC2292
+ mov ip, lr
/*
* before relocating, we have to setup RAM timing
* because memory timing is board-dependent, you will
- * find a memsetup.S in your board directory.
+ * find a lowlevel_init.S in your board directory.
*/
- mov ip, lr
- bl memsetup
+ bl lowlevel_init
mov lr, ip
+#endif
mov pc, lr
#endif
-#if defined(CONFIG_IMPA7) || defined(CONFIG_EP7312)
+#if defined(CONFIG_IMPA7) || defined(CONFIG_EP7312) || defined(CONFIG_ARMADILLO)
.align 5
.globl reset_cpu
reset_cpu:
#elif defined(CONFIG_S3C4510B)
/* Nothing done here as reseting the CPU is board specific, depending
* on external peripherals such as watchdog timers, etc. */
+#elif defined(CONFIG_INTEGRATOR) && defined(CONFIG_ARCH_INTEGRATOR)
+ /* No specific reset actions for IntegratorAP/CM720T as yet */
+#elif defined(CONFIG_LPC2292)
+ .align 5
+.globl reset_cpu
+reset_cpu:
+ mov pc, r0
#else
#error No reset_cpu() defined for current CPU type
#endif
projects / platform / kernel / u-boot.git / blobdiff