* r4 - 2nd arg to board_init(): boot flag
*/
.text
- .long 0x27051956 /* U-Boot Magic Number */
+ .long 0x27051956 /* U-Boot Magic Number */
.globl version_string
version_string:
.ascii U_BOOT_VERSION
.globl _start_warm
_start_warm:
- li r21, BOOTFLAG_WARM /* Software reboot */
+ li r21, BOOTFLAG_WARM /* Software reboot */
b boot_warm
sync
boot_warm:
/* if this is a multi-core system we need to check which cpu
- * this is, if it is not cpu 0 send the cpu to the linux reset
+ * this is, if it is not cpu 0 send the cpu to the linux reset
* vector */
#if (CONFIG_NUM_CPUS > 1)
mfspr r0, MSSCR0
bl secondary_cpu_setup
#endif
-
+
/* disable everything */
1: li r0, 0
mtspr HID0, r0
mtmsr 0
bl invalidate_bats
sync
-
+
#ifdef CFG_L2
/* init the L2 cache */
addis r3, r0, L2_INIT@h
ori r3, r3, L2_INIT@l
- mtspr l2cr, r3
+ mtspr l2cr, r3
/* invalidate the L2 cache */
bl l2cache_invalidate
sync
#endif
-
+
/*
* Calculate absolute address in FLASH and jump there
*------------------------------------------------------*/
/* enable extended addressing */
bl enable_ext_addr
-
+
/* setup the bats */
bl setup_bats
sync
/* setup ccsrbar */
bl setup_ccsrbar
#endif
-
+
/* Fix for SMP linux - Changing arbitration to round-robin */
lis r3, CFG_CCSRBAR@h
ori r3, r3, 0x1000
stw r4, 0(r3)
sync
#endif
-#if 1
+#if 1
/* make sure timer enabled in guts register too */
lis r3, CFG_CCSRBAR@h
oris r3,r3, 0xE
ori r5,r5,0x5FFF
and r4,r4,r5
stw r4,0(r3)
-#endif
+#endif
/*
* Cache must be enabled here for stack-in-cache trick.
* This means we need to enable the BATS.
/* enable and invalidate the data cache */
/* bl l1dcache_enable */
- bl dcache_enable
+ bl dcache_enable
sync
#if 1
bl icache_enable
#endif
-
+
#ifdef CFG_INIT_RAM_LOCK
bl lock_ram_in_cache
sync
bl cpu_init_f
sync
-#ifdef RUN_DIAG
+#ifdef RUN_DIAG
/* Sri: Code to run the diagnostic automatically */
/* Branch to diagnostic */
blr
-
-diag_done:
-#endif
+
+diag_done:
+#endif
/* bl l2cache_enable*/
mr r3, r21
.globl invalidate_bats
invalidate_bats:
-
+
/* invalidate BATs */
mtspr IBAT0U, r0
mtspr IBAT1U, r0
isync
sync
blr
-
-
+
+
/* setup_bats - set them up to some initial state */
.globl setup_bats
setup_bats:
-
+
addis r0, r0, 0x0000
/* IBAT 0 */
mtspr DBAT7U, r3
isync
-1:
+1:
addis r3, 0, 0x0000
addis r5, 0, 0x4 /* upper bound of 0x00040000 for 7400/750 */
isync
blr
-/*------------------------------------------------------------------------------- */
-/* Function: in8 */
-/* Description: Input 8 bits */
-/*------------------------------------------------------------------------------- */
+/*
+ * Function: in8
+ * Description: Input 8 bits
+ */
.globl in8
in8:
lbz r3,0x0000(r3)
blr
-/*------------------------------------------------------------------------------- */
-/* Function: out8 */
-/* Description: Output 8 bits */
-/*------------------------------------------------------------------------------- */
+/*
+ * Function: out8
+ * Description: Output 8 bits
+ */
.globl out8
out8:
stb r4,0x0000(r3)
blr
-/*------------------------------------------------------------------------------- */
-/* Function: out16 */
-/* Description: Output 16 bits */
-/*------------------------------------------------------------------------------- */
+/*
+ * Function: out16
+ * Description: Output 16 bits
+ */
.globl out16
out16:
sth r4,0x0000(r3)
blr
-/*------------------------------------------------------------------------------- */
-/* Function: out16r */
-/* Description: Byte reverse and output 16 bits */
-/*------------------------------------------------------------------------------- */
+/*
+ * Function: out16r
+ * Description: Byte reverse and output 16 bits
+ */
.globl out16r
out16r:
sthbrx r4,r0,r3
blr
-/*------------------------------------------------------------------------------- */
-/* Function: out32 */
-/* Description: Output 32 bits */
-/*------------------------------------------------------------------------------- */
+/*
+ * Function: out32
+ * Description: Output 32 bits
+ */
.globl out32
out32:
stw r4,0x0000(r3)
blr
-/*------------------------------------------------------------------------------- */
-/* Function: out32r */
-/* Description: Byte reverse and output 32 bits */
-/*------------------------------------------------------------------------------- */
+/*
+ * Function: out32r
+ * Description: Byte reverse and output 32 bits
+ */
.globl out32r
out32r:
stwbrx r4,r0,r3
blr
-/*------------------------------------------------------------------------------- */
-/* Function: in16 */
-/* Description: Input 16 bits */
-/*------------------------------------------------------------------------------- */
+/*
+ * Function: in16
+ * Description: Input 16 bits
+ */
.globl in16
in16:
lhz r3,0x0000(r3)
blr
-/*------------------------------------------------------------------------------- */
-/* Function: in16r */
-/* Description: Input 16 bits and byte reverse */
-/*------------------------------------------------------------------------------- */
+/*
+ * Function: in16r
+ * Description: Input 16 bits and byte reverse
+ */
.globl in16r
in16r:
lhbrx r3,r0,r3
blr
-/*------------------------------------------------------------------------------- */
-/* Function: in32 */
-/* Description: Input 32 bits */
-/*------------------------------------------------------------------------------- */
+/*
+ * Function: in32
+ * Description: Input 32 bits
+ */
.globl in32
in32:
lwz 3,0x0000(3)
blr
-/*------------------------------------------------------------------------------- */
-/* Function: in32r */
-/* Description: Input 32 bits and byte reverse */
-/*------------------------------------------------------------------------------- */
+/*
+ * Function: in32r
+ * Description: Input 32 bits and byte reverse
+ */
.globl in32r
in32r:
lwbrx r3,r0,r3
blr
-/*------------------------------------------------------------------------------- */
-/* Function: ppcDcbf */
-/* Description: Data Cache block flush */
-/* Input: r3 = effective address */
-/* Output: none. */
-/*------------------------------------------------------------------------------- */
+/*
+ * Function: ppcDcbf
+ * Description: Data Cache block flush
+ * Input: r3 = effective address
+ * Output: none.
+ */
.globl ppcDcbf
ppcDcbf:
dcbf r0,r3
blr
-/*------------------------------------------------------------------------------- */
-/* Function: ppcDcbi */
-/* Description: Data Cache block Invalidate */
-/* Input: r3 = effective address */
-/* Output: none. */
-/*------------------------------------------------------------------------------- */
+/*
+ * Function: ppcDcbi
+ * Description: Data Cache block Invalidate
+ * Input: r3 = effective address
+ * Output: none.
+ */
.globl ppcDcbi
ppcDcbi:
dcbi r0,r3
blr
-/*--------------------------------------------------------------------------
+/*
* Function: ppcDcbz
* Description: Data Cache block zero.
* Input: r3 = effective address
* Output: none.
- *-------------------------------------------------------------------------- */
-
+ */
.globl ppcDcbz
ppcDcbz:
dcbz r0,r3
blr
-/*-------------------------------------------------------------------------- */
-/* Function: ppcSync */
-/* Description: Processor Synchronize */
-/* Input: none. */
-/* Output: none. */
-/*-------------------------------------------------------------------------- */
+/*
+ * Function: ppcSync
+ * Description: Processor Synchronize
+ * Input: none.
+ * Output: none.
+ */
.globl ppcSync
ppcSync:
sync
blr
-
-/*-----------------------------------------------------------------------*/
+
/*
* void relocate_code (addr_sp, gd, addr_moni)
*
mr r1, r3 /* Set new stack pointer */
mr r9, r4 /* Save copy of Global Data pointer */
+ mr r29, r9 /* Save for DECLARE_GLOBAL_DATA_PTR */
mr r10, r5 /* Save copy of Destination Address */
-
+
mr r3, r5 /* Destination Address */
lis r4, CFG_MONITOR_BASE@h /* Source Address */
ori r4, r4, CFG_MONITOR_BASE@l
#if (CFG_CCSRBAR_DEFAULT != CFG_CCSRBAR)
.globl setup_ccsrbar
-setup_ccsrbar:
+setup_ccsrbar:
/* Special sequence needed to update CCSRBAR itself */
lis r4, CFG_CCSRBAR_DEFAULT@h
ori r4, r4, CFG_CCSRBAR_DEFAULT@l
lis r3, CFG_CCSRBAR@h
lwz r5, CFG_CCSRBAR@l(r3)
isync
-
+
blr
#endif
-
+
#ifdef CFG_INIT_RAM_LOCK
lock_ram_in_cache:
/* Allocate Initial RAM in data cache.
isync
blr
#endif
-
+
.globl unlock_ram_in_cache
unlock_ram_in_cache:
/* invalidate the INIT_RAM section */
sync
blr
#endif
-#if 0
+#if 0
/* Unlock the first way of the data cache */
mfspr r0, LDSTCR
li r3,0x0080
* from Linux. We'll do some basic cpu init and then pass
* it to the Linux Reset Vector.
* Sri: Much of this initialization is not required. Linux
- * rewrites the bats, and the sprs and also enables the L1 cache.
+ * rewrites the bats, and the sprs and also enables the L1 cache.
*/
#if (CONFIG_NUM_CPUS > 1)
.globl secondary_cpu_setup
-secondary_cpu_setup:
+secondary_cpu_setup:
/* Do only core setup on all cores except cpu0 */
bl invalidate_bats
sync
bl enable_ext_addr
-
+
#ifdef CFG_L2
/* init the L2 cache */
addis r3, r0, L2_INIT@h
/* enable and invalidate the instruction cache*/
bl icache_enable
sync
-
/* TBEN in HID0 */
mfspr r4, HID0
- oris r4, r4, 0x0400
+ oris r4, r4, 0x0400
mtspr HID0, r4
sync
isync
-
+
/*SYNCBE|ABE in HID1*/
mfspr r4, HID1
- ori r4, r4, 0x0C00
+ ori r4, r4, 0x0C00
mtspr HID1, r4
sync
isync
-
+
lis r3, CONFIG_LINUX_RESET_VEC@h
ori r3, r3, CONFIG_LINUX_RESET_VEC@l
mtlr r3
blr
-
- /* Never Returns, Running in Linux Now */
+
+ /* Never Returns, Running in Linux Now */
#endif
projects / u-boot / blobdiff