Warning introduced by GCC 4.4.1

Signed-off-by: Graeme Russ graeme.russ@gmail.com --- board/eNET/config.mk | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/board/eNET/config.mk b/board/eNET/config.mk index a763841..058026d 100644 --- a/board/eNET/config.mk +++ b/board/eNET/config.mk @@ -22,3 +22,4 @@ #

TEXT_BASE = 0x38040000 +CFLAGS_dlmalloc.o += -Wa,--no-warn -fno-strict-aliasing

Signed-off-by: Graeme Russ graeme.russ@gmail.com --- board/eNET/config.mk | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/board/eNET/config.mk b/board/eNET/config.mk index 058026d..c9703ea 100644 --- a/board/eNET/config.mk +++ b/board/eNET/config.mk @@ -23,3 +23,4 @@

TEXT_BASE = 0x38040000 CFLAGS_dlmalloc.o += -Wa,--no-warn -fno-strict-aliasing +PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm

Signed-off-by: Graeme Russ graeme.russ@gmail.com --- include/configs/eNET.h | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/configs/eNET.h b/include/configs/eNET.h index 54c34fa..0a86550 100644 --- a/include/configs/eNET.h +++ b/include/configs/eNET.h @@ -234,8 +234,8 @@ #ifndef __ASSEMBLER__ extern unsigned long ip;

-#define PRINTIP asm ("call next_line\n" \ - "next_line:\n" \ +#define PRINTIP asm ("call 0\n" \ + "0:\n" \ "pop %%eax\n" \ "movl %%eax, %0\n" \ :"=r"(ip) \

In preperation for full relocation

Signed-off-by: Graeme Russ graeme.russ@gmail.com --- cpu/i386/Makefile | 2 +- cpu/i386/cpu.c | 1 - cpu/i386/exceptions.c | 229 --------------------- cpu/i386/interrupts.c | 431 ++++++++++++++++++++++++++++++++++++++-- include/asm-i386/interrupt.h | 27 --- include/asm-i386/u-boot-i386.h | 3 - lib_i386/interrupts.c | 4 +- lib_i386/pcat_interrupts.c | 33 --- 8 files changed, 420 insertions(+), 310 deletions(-) delete mode 100644 cpu/i386/exceptions.c

diff --git a/cpu/i386/Makefile b/cpu/i386/Makefile index e98bd3d..c658c6e 100644 --- a/cpu/i386/Makefile +++ b/cpu/i386/Makefile @@ -29,7 +29,7 @@ include $(TOPDIR)/config.mk LIB = $(obj)lib$(CPU).a

START = start.o start16.o resetvec.o -COBJS = serial.o interrupts.o exceptions.o cpu.o +COBJS = serial.o interrupts.o cpu.o

SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c) OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) diff --git a/cpu/i386/cpu.c b/cpu/i386/cpu.c index d91e33b..8baf37d 100644 --- a/cpu/i386/cpu.c +++ b/cpu/i386/cpu.c @@ -48,7 +48,6 @@ int cpu_init(void)

/* Initialize core interrupt and exception functionality of CPU */ cpu_init_interrupts (); - cpu_init_exceptions ();

return 0; } diff --git a/cpu/i386/exceptions.c b/cpu/i386/exceptions.c deleted file mode 100644 index bc3d434..0000000 --- a/cpu/i386/exceptions.c +++ /dev/null @@ -1,229 +0,0 @@ -/* - * (C) Copyright 2002 - * Daniel Engström, Omicron Ceti AB, daniel@omicron.se. - * - * See file CREDITS for list of people who contributed to this - * project. - * - * 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 program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * 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., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include <common.h> -#include <asm/interrupt.h> - -asm (".globl exp_return\n" - "exp_return:\n" - " addl $12, %esp\n" - " pop %esp\n" - " popa\n" - " iret\n"); - -char exception_stack[4096]; - -/* - * For detailed description of each exception, refer to: - * Intel® 64 and IA-32 Architectures Software Developer's Manual - * Volume 1: Basic Architecture - * Order Number: 253665-029US, November 2008 - * Table 6-1. Exceptions and Interrupts - */ -DECLARE_EXCEPTION(0, divide_error_entry); -DECLARE_EXCEPTION(1, debug_entry); -DECLARE_EXCEPTION(2, nmi_interrupt_entry); -DECLARE_EXCEPTION(3, breakpoint_entry); -DECLARE_EXCEPTION(4, overflow_entry); -DECLARE_EXCEPTION(5, bound_range_exceeded_entry); -DECLARE_EXCEPTION(6, invalid_opcode_entry); -DECLARE_EXCEPTION(7, device_not_available_entry); -DECLARE_EXCEPTION(8, double_fault_entry); -DECLARE_EXCEPTION(9, coprocessor_segment_overrun_entry); -DECLARE_EXCEPTION(10, invalid_tss_entry); -DECLARE_EXCEPTION(11, segment_not_present_entry); -DECLARE_EXCEPTION(12, stack_segment_fault_entry); -DECLARE_EXCEPTION(13, general_protection_entry); -DECLARE_EXCEPTION(14, page_fault_entry); -DECLARE_EXCEPTION(15, reserved_exception_entry); -DECLARE_EXCEPTION(16, floating_point_error_entry); -DECLARE_EXCEPTION(17, alignment_check_entry); -DECLARE_EXCEPTION(18, machine_check_entry); -DECLARE_EXCEPTION(19, simd_floating_point_exception_entry); -DECLARE_EXCEPTION(20, reserved_exception_entry); -DECLARE_EXCEPTION(21, reserved_exception_entry); -DECLARE_EXCEPTION(22, reserved_exception_entry); -DECLARE_EXCEPTION(23, reserved_exception_entry); -DECLARE_EXCEPTION(24, reserved_exception_entry); -DECLARE_EXCEPTION(25, reserved_exception_entry); -DECLARE_EXCEPTION(26, reserved_exception_entry); -DECLARE_EXCEPTION(27, reserved_exception_entry); -DECLARE_EXCEPTION(28, reserved_exception_entry); -DECLARE_EXCEPTION(29, reserved_exception_entry); -DECLARE_EXCEPTION(30, reserved_exception_entry); -DECLARE_EXCEPTION(31, reserved_exception_entry); - -__isr__ reserved_exception_entry(int cause, int ip, int seg) -{ - printf("Reserved Exception %d at %04x:%08x\n", cause, seg, ip); -} - -__isr__ divide_error_entry(int cause, int ip, int seg) -{ - printf("Divide Error (Division by zero) at %04x:%08x\n", seg, ip); - while(1); -} - -__isr__ debug_entry(int cause, int ip, int seg) -{ - printf("Debug Interrupt (Single step) at %04x:%08x\n", seg, ip); -} - -__isr__ nmi_interrupt_entry(int cause, int ip, int seg) -{ - printf("NMI Interrupt at %04x:%08x\n", seg, ip); -} - -__isr__ breakpoint_entry(int cause, int ip, int seg) -{ - printf("Breakpoint at %04x:%08x\n", seg, ip); -} - -__isr__ overflow_entry(int cause, int ip, int seg) -{ - printf("Overflow at %04x:%08x\n", seg, ip); - while(1); -} - -__isr__ bound_range_exceeded_entry(int cause, int ip, int seg) -{ - printf("BOUND Range Exceeded at %04x:%08x\n", seg, ip); - while(1); -} - -__isr__ invalid_opcode_entry(int cause, int ip, int seg) -{ - printf("Invalid Opcode (UnDefined Opcode) at %04x:%08x\n", seg, ip); - while(1); -} - -__isr__ device_not_available_entry(int cause, int ip, int seg) -{ - printf("Device Not Available (No Math Coprocessor) at %04x:%08x\n", seg, ip); - while(1); -} - -__isr__ double_fault_entry(int cause, int ip, int seg) -{ - printf("Double fault at %04x:%08x\n", seg, ip); - while(1); -} - -__isr__ coprocessor_segment_overrun_entry(int cause, int ip, int seg) -{ - printf("Co-processor segment overrun at %04x:%08x\n", seg, ip); - while(1); -} - -__isr__ invalid_tss_entry(int cause, int ip, int seg) -{ - printf("Invalid TSS at %04x:%08x\n", seg, ip); -} - -__isr__ segment_not_present_entry(int cause, int ip, int seg) -{ - printf("Segment Not Present at %04x:%08x\n", seg, ip); - while(1); -} - -__isr__ stack_segment_fault_entry(int cause, int ip, int seg) -{ - printf("Stack Segment Fault at %04x:%08x\n", seg, ip); - while(1); -} - -__isr__ general_protection_entry(int cause, int ip, int seg) -{ - printf("General Protection at %04x:%08x\n", seg, ip); -} - -__isr__ page_fault_entry(int cause, int ip, int seg) -{ - printf("Page fault at %04x:%08x\n", seg, ip); - while(1); -} - -__isr__ floating_point_error_entry(int cause, int ip, int seg) -{ - printf("Floating-Point Error (Math Fault) at %04x:%08x\n", seg, ip); -} - -__isr__ alignment_check_entry(int cause, int ip, int seg) -{ - printf("Alignment check at %04x:%08x\n", seg, ip); -} - -__isr__ machine_check_entry(int cause, int ip, int seg) -{ - printf("Machine Check at %04x:%08x\n", seg, ip); -} - -__isr__ simd_floating_point_exception_entry(int cause, int ip, int seg) -{ - printf("SIMD Floating-Point Exception at %04x:%08x\n", seg, ip); -} - -int cpu_init_exceptions(void) -{ - /* Just in case... */ - disable_interrupts(); - - /* Setup exceptions */ - set_vector(0x00, exp_0); - set_vector(0x01, exp_1); - set_vector(0x02, exp_2); - set_vector(0x03, exp_3); - set_vector(0x04, exp_4); - set_vector(0x05, exp_5); - set_vector(0x06, exp_6); - set_vector(0x07, exp_7); - set_vector(0x08, exp_8); - set_vector(0x09, exp_9); - set_vector(0x0a, exp_10); - set_vector(0x0b, exp_11); - set_vector(0x0c, exp_12); - set_vector(0x0d, exp_13); - set_vector(0x0e, exp_14); - set_vector(0x0f, exp_15); - set_vector(0x10, exp_16); - set_vector(0x11, exp_17); - set_vector(0x12, exp_18); - set_vector(0x13, exp_19); - set_vector(0x14, exp_20); - set_vector(0x15, exp_21); - set_vector(0x16, exp_22); - set_vector(0x17, exp_23); - set_vector(0x18, exp_24); - set_vector(0x19, exp_25); - set_vector(0x1a, exp_26); - set_vector(0x1b, exp_27); - set_vector(0x1c, exp_28); - set_vector(0x1d, exp_29); - set_vector(0x1e, exp_30); - set_vector(0x1f, exp_31); - - /* It is now safe to enable interrupts */ - enable_interrupts(); - - return 0; -} diff --git a/cpu/i386/interrupts.c b/cpu/i386/interrupts.c index 063ea42..d80cfb1 100644 --- a/cpu/i386/interrupts.c +++ b/cpu/i386/interrupts.c @@ -1,4 +1,7 @@ /* + * (C) Copyright 2008 + * Graeme Russ, graeme.russ@gmail.com. + * * (C) Copyright 2002 * Daniel Engström, Omicron Ceti AB, daniel@omicron.se. * @@ -24,6 +27,14 @@ #include <common.h> #include <asm/interrupt.h>

+#define DECLARE_INTERRUPT(x) \ + ".globl irq_"#x"\n" \ + "irq_"#x":\n" \ + "pushl %ebp\n" \ + "movl %esp,%ebp\n" \ + "pusha\n" \ + "pushl $"#x"\n" \ + "jmp irq_common_entry\n"

struct idt_entry { u16 base_low; @@ -33,23 +44,20 @@ struct idt_entry { u16 base_high; } __attribute__ ((packed));

+struct desc_ptr { + unsigned short size; + unsigned long address; + unsigned short segment; +} __attribute__((packed));

struct idt_entry idt[256];

+struct desc_ptr idt_ptr;

-asm (".globl irq_return\n" - "irq_return:\n" - " addl $4, %esp\n" - " popa\n" - " iret\n"); - -void __attribute__ ((regparm(0))) default_isr(void); -asm ("default_isr: iret\n"); - -asm ("idt_ptr:\n" - ".word 0x800\n" /* size of the table 8*256 bytes */ - ".long idt\n" /* offset */ - ".word 0x18\n");/* data segment */ +static inline void load_idt(const struct desc_ptr *dtr) +{ + asm volatile("cs lidt %0"::"m" (*dtr)); +}

void set_vector(u8 intnum, void *routine) { @@ -57,11 +65,16 @@ void set_vector(u8 intnum, void *routine) idt[intnum].base_low = (u16)((u32)(routine + gd->reloc_off) & 0xffff); }

+void irq_0(void); +void irq_1(void);

int cpu_init_interrupts(void) { int i;

+ int irq_entry_size = irq_1 - irq_0; + void *irq_entry = (void *)irq_0; + /* Just in case... */ disable_interrupts();

@@ -70,10 +83,15 @@ int cpu_init_interrupts(void) idt[i].access = 0x8e; idt[i].res = 0; idt[i].selector = 0x10; - set_vector(i, default_isr); + set_vector(i, irq_entry); + irq_entry += irq_entry_size; }

- asm ("cs lidt idt_ptr\n"); + idt_ptr.size = 256 * 8; + idt_ptr.address = (unsigned long) idt; + idt_ptr.segment = 0x18; + + load_idt(&idt_ptr);

/* It is now safe to enable interrupts */ enable_interrupts(); @@ -81,6 +99,12 @@ int cpu_init_interrupts(void) return 0; }

+void __do_irq(int irq) +{ + printf("Unhandled IRQ : %d\n", irq); +} +void do_irq(int irq) __attribute__((weak, alias("__do_irq"))); + void enable_interrupts(void) { asm("sti\n"); @@ -94,3 +118,380 @@ int disable_interrupts(void)

return (flags&0x200); /* IE flags is bit 9 */ } + +/* IRQ Low-Level Service Routine */ +__isr__ irq_llsr(int ip, int seg, int irq) +{ + /* + * For detailed description of each exception, refer to: + * Intel® 64 and IA-32 Architectures Software Developer's Manual + * Volume 1: Basic Architecture + * Order Number: 253665-029US, November 2008 + * Table 6-1. Exceptions and Interrupts + */ + switch (irq) { + case 0x00: + printf("Divide Error (Division by zero) at %04x:%08x\n", seg, ip); + while(1); + break; + case 0x01: + printf("Debug Interrupt (Single step) at %04x:%08x\n", seg, ip); + break; + case 0x02: + printf("NMI Interrupt at %04x:%08x\n", seg, ip); + break; + case 0x03: + printf("Breakpoint at %04x:%08x\n", seg, ip); + break; + case 0x04: + printf("Overflow at %04x:%08x\n", seg, ip); + while(1); + break; + case 0x05: + printf("BOUND Range Exceeded at %04x:%08x\n", seg, ip); + while(1); + break; + case 0x06: + printf("Invalid Opcode (UnDefined Opcode) at %04x:%08x\n", seg, ip); + while(1); + break; + case 0x07: + printf("Device Not Available (No Math Coprocessor) at %04x:%08x\n", seg, ip); + while(1); + break; + case 0x08: + printf("Double fault at %04x:%08x\n", seg, ip); + while(1); + break; + case 0x09: + printf("Co-processor segment overrun at %04x:%08x\n", seg, ip); + while(1); + break; + case 0x0a: + printf("Invalid TSS at %04x:%08x\n", seg, ip); + break; + case 0x0b: + printf("Segment Not Present at %04x:%08x\n", seg, ip); + while(1); + break; + case 0x0c: + printf("Stack Segment Fault at %04x:%08x\n", seg, ip); + while(1); + break; + case 0x0d: + printf("General Protection at %04x:%08x\n", seg, ip); + break; + case 0x0e: + printf("Page fault at %04x:%08x\n", seg, ip); + while(1); + break; + case 0x0f: + printf("Floating-Point Error (Math Fault) at %04x:%08x\n", seg, ip); + break; + case 0x10: + printf("Alignment check at %04x:%08x\n", seg, ip); + break; + case 0x11: + printf("Machine Check at %04x:%08x\n", seg, ip); + break; + case 0x12: + printf("SIMD Floating-Point Exception at %04x:%08x\n", seg, ip); + break; + case 0x13: + case 0x14: + case 0x15: + case 0x16: + case 0x17: + case 0x18: + case 0x19: + case 0x1a: + case 0x1b: + case 0x1c: + case 0x1d: + case 0x1e: + case 0x1f: + printf("Reserved Exception %d at %04x:%08x\n", irq, seg, ip); + break; + + default: + /* Hardware or User IRQ */ + do_irq(irq); + } +} + +/* + * OK - This looks really horrible, but it serves a purpose - It helps create + * fully relocatable code. + * - The call to irq_llsr will be a relative jump + * - The IRQ entries will be guaranteed to be in order + * It's a bit annoying that we need to waste 3 bytes per interrupt entry + * (total of 768 code bytes), but we MUST create a Stack Frame and this is + * the easiest way I could do it. Maybe it can be made better later. + */ +asm(".globl irq_common_entry\n" \ + "irq_common_entry:\n" \ + "pushl $0\n" \ + "pushl $0\n" \ + "call irq_llsr\n" \ + "popl %eax\n" \ + "popl %eax\n" \ + "popl %eax\n" \ + "popa\n" \ + "leave\n"\ + "iret\n" \ + DECLARE_INTERRUPT(0) \ + DECLARE_INTERRUPT(1) \ + DECLARE_INTERRUPT(2) \ + DECLARE_INTERRUPT(3) \ + DECLARE_INTERRUPT(4) \ + DECLARE_INTERRUPT(5) \ + DECLARE_INTERRUPT(6) \ + DECLARE_INTERRUPT(7) \ + DECLARE_INTERRUPT(8) \ + DECLARE_INTERRUPT(9) \ + DECLARE_INTERRUPT(10) \ + DECLARE_INTERRUPT(11) \ + DECLARE_INTERRUPT(12) \ + DECLARE_INTERRUPT(13) \ + DECLARE_INTERRUPT(14) \ + DECLARE_INTERRUPT(15) \ + DECLARE_INTERRUPT(16) \ + DECLARE_INTERRUPT(17) \ + DECLARE_INTERRUPT(18) \ + DECLARE_INTERRUPT(19) \ + DECLARE_INTERRUPT(20) \ + DECLARE_INTERRUPT(21) \ + DECLARE_INTERRUPT(22) \ + DECLARE_INTERRUPT(23) \ + DECLARE_INTERRUPT(24) \ + DECLARE_INTERRUPT(25) \ + DECLARE_INTERRUPT(26) \ + DECLARE_INTERRUPT(27) \ + DECLARE_INTERRUPT(28) \ + DECLARE_INTERRUPT(29) \ + DECLARE_INTERRUPT(30) \ + DECLARE_INTERRUPT(31) \ + DECLARE_INTERRUPT(32) \ + DECLARE_INTERRUPT(33) \ + DECLARE_INTERRUPT(34) \ + DECLARE_INTERRUPT(35) \ + DECLARE_INTERRUPT(36) \ + DECLARE_INTERRUPT(37) \ + DECLARE_INTERRUPT(38) \ + DECLARE_INTERRUPT(39) \ + DECLARE_INTERRUPT(40) \ + DECLARE_INTERRUPT(41) \ + DECLARE_INTERRUPT(42) \ + DECLARE_INTERRUPT(43) \ + DECLARE_INTERRUPT(44) \ + DECLARE_INTERRUPT(45) \ + DECLARE_INTERRUPT(46) \ + DECLARE_INTERRUPT(47) \ + DECLARE_INTERRUPT(48) \ + DECLARE_INTERRUPT(49) \ + DECLARE_INTERRUPT(50) \ + DECLARE_INTERRUPT(51) \ + DECLARE_INTERRUPT(52) \ + DECLARE_INTERRUPT(53) \ + DECLARE_INTERRUPT(54) \ + DECLARE_INTERRUPT(55) \ + DECLARE_INTERRUPT(56) \ + DECLARE_INTERRUPT(57) \ + DECLARE_INTERRUPT(58) \ + DECLARE_INTERRUPT(59) \ + DECLARE_INTERRUPT(60) \ + DECLARE_INTERRUPT(61) \ + DECLARE_INTERRUPT(62) \ + DECLARE_INTERRUPT(63) \ + DECLARE_INTERRUPT(64) \ + DECLARE_INTERRUPT(65) \ + DECLARE_INTERRUPT(66) \ + DECLARE_INTERRUPT(67) \ + DECLARE_INTERRUPT(68) \ + DECLARE_INTERRUPT(69) \ + DECLARE_INTERRUPT(70) \ + DECLARE_INTERRUPT(71) \ + DECLARE_INTERRUPT(72) \ + DECLARE_INTERRUPT(73) \ + DECLARE_INTERRUPT(74) \ + DECLARE_INTERRUPT(75) \ + DECLARE_INTERRUPT(76) \ + DECLARE_INTERRUPT(77) \ + DECLARE_INTERRUPT(78) \ + DECLARE_INTERRUPT(79) \ + DECLARE_INTERRUPT(80) \ + DECLARE_INTERRUPT(81) \ + DECLARE_INTERRUPT(82) \ + DECLARE_INTERRUPT(83) \ + DECLARE_INTERRUPT(84) \ + DECLARE_INTERRUPT(85) \ + DECLARE_INTERRUPT(86) \ + DECLARE_INTERRUPT(87) \ + DECLARE_INTERRUPT(88) \ + DECLARE_INTERRUPT(89) \ + DECLARE_INTERRUPT(90) \ + DECLARE_INTERRUPT(91) \ + DECLARE_INTERRUPT(92) \ + DECLARE_INTERRUPT(93) \ + DECLARE_INTERRUPT(94) \ + DECLARE_INTERRUPT(95) \ + DECLARE_INTERRUPT(97) \ + DECLARE_INTERRUPT(96) \ + DECLARE_INTERRUPT(98) \ + DECLARE_INTERRUPT(99) \ + DECLARE_INTERRUPT(100) \ + DECLARE_INTERRUPT(101) \ + DECLARE_INTERRUPT(102) \ + DECLARE_INTERRUPT(103) \ + DECLARE_INTERRUPT(104) \ + DECLARE_INTERRUPT(105) \ + DECLARE_INTERRUPT(106) \ + DECLARE_INTERRUPT(107) \ + DECLARE_INTERRUPT(108) \ + DECLARE_INTERRUPT(109) \ + DECLARE_INTERRUPT(110) \ + DECLARE_INTERRUPT(111) \ + DECLARE_INTERRUPT(112) \ + DECLARE_INTERRUPT(113) \ + DECLARE_INTERRUPT(114) \ + DECLARE_INTERRUPT(115) \ + DECLARE_INTERRUPT(116) \ + DECLARE_INTERRUPT(117) \ + DECLARE_INTERRUPT(118) \ + DECLARE_INTERRUPT(119) \ + DECLARE_INTERRUPT(120) \ + DECLARE_INTERRUPT(121) \ + DECLARE_INTERRUPT(122) \ + DECLARE_INTERRUPT(123) \ + DECLARE_INTERRUPT(124) \ + DECLARE_INTERRUPT(125) \ + DECLARE_INTERRUPT(126) \ + DECLARE_INTERRUPT(127) \ + DECLARE_INTERRUPT(128) \ + DECLARE_INTERRUPT(129) \ + DECLARE_INTERRUPT(130) \ + DECLARE_INTERRUPT(131) \ + DECLARE_INTERRUPT(132) \ + DECLARE_INTERRUPT(133) \ + DECLARE_INTERRUPT(134) \ + DECLARE_INTERRUPT(135) \ + DECLARE_INTERRUPT(136) \ + DECLARE_INTERRUPT(137) \ + DECLARE_INTERRUPT(138) \ + DECLARE_INTERRUPT(139) \ + DECLARE_INTERRUPT(140) \ + DECLARE_INTERRUPT(141) \ + DECLARE_INTERRUPT(142) \ + DECLARE_INTERRUPT(143) \ + DECLARE_INTERRUPT(144) \ + DECLARE_INTERRUPT(145) \ + DECLARE_INTERRUPT(146) \ + DECLARE_INTERRUPT(147) \ + DECLARE_INTERRUPT(148) \ + DECLARE_INTERRUPT(149) \ + DECLARE_INTERRUPT(150) \ + DECLARE_INTERRUPT(151) \ + DECLARE_INTERRUPT(152) \ + DECLARE_INTERRUPT(153) \ + DECLARE_INTERRUPT(154) \ + DECLARE_INTERRUPT(155) \ + DECLARE_INTERRUPT(156) \ + DECLARE_INTERRUPT(157) \ + DECLARE_INTERRUPT(158) \ + DECLARE_INTERRUPT(159) \ + DECLARE_INTERRUPT(160) \ + DECLARE_INTERRUPT(161) \ + DECLARE_INTERRUPT(162) \ + DECLARE_INTERRUPT(163) \ + DECLARE_INTERRUPT(164) \ + DECLARE_INTERRUPT(165) \ + DECLARE_INTERRUPT(166) \ + DECLARE_INTERRUPT(167) \ + DECLARE_INTERRUPT(168) \ + DECLARE_INTERRUPT(169) \ + DECLARE_INTERRUPT(170) \ + DECLARE_INTERRUPT(171) \ + DECLARE_INTERRUPT(172) \ + DECLARE_INTERRUPT(173) \ + DECLARE_INTERRUPT(174) \ + DECLARE_INTERRUPT(175) \ + DECLARE_INTERRUPT(176) \ + DECLARE_INTERRUPT(177) \ + DECLARE_INTERRUPT(178) \ + DECLARE_INTERRUPT(179) \ + DECLARE_INTERRUPT(180) \ + DECLARE_INTERRUPT(181) \ + DECLARE_INTERRUPT(182) \ + DECLARE_INTERRUPT(183) \ + DECLARE_INTERRUPT(184) \ + DECLARE_INTERRUPT(185) \ + DECLARE_INTERRUPT(186) \ + DECLARE_INTERRUPT(187) \ + DECLARE_INTERRUPT(188) \ + DECLARE_INTERRUPT(189) \ + DECLARE_INTERRUPT(190) \ + DECLARE_INTERRUPT(191) \ + DECLARE_INTERRUPT(192) \ + DECLARE_INTERRUPT(193) \ + DECLARE_INTERRUPT(194) \ + DECLARE_INTERRUPT(195) \ + DECLARE_INTERRUPT(196) \ + DECLARE_INTERRUPT(197) \ + DECLARE_INTERRUPT(198) \ + DECLARE_INTERRUPT(199) \ + DECLARE_INTERRUPT(200) \ + DECLARE_INTERRUPT(201) \ + DECLARE_INTERRUPT(202) \ + DECLARE_INTERRUPT(203) \ + DECLARE_INTERRUPT(204) \ + DECLARE_INTERRUPT(205) \ + DECLARE_INTERRUPT(206) \ + DECLARE_INTERRUPT(207) \ + DECLARE_INTERRUPT(208) \ + DECLARE_INTERRUPT(209) \ + DECLARE_INTERRUPT(210) \ + DECLARE_INTERRUPT(211) \ + DECLARE_INTERRUPT(212) \ + DECLARE_INTERRUPT(213) \ + DECLARE_INTERRUPT(214) \ + DECLARE_INTERRUPT(215) \ + DECLARE_INTERRUPT(216) \ + DECLARE_INTERRUPT(217) \ + DECLARE_INTERRUPT(218) \ + DECLARE_INTERRUPT(219) \ + DECLARE_INTERRUPT(220) \ + DECLARE_INTERRUPT(221) \ + DECLARE_INTERRUPT(222) \ + DECLARE_INTERRUPT(223) \ + DECLARE_INTERRUPT(224) \ + DECLARE_INTERRUPT(225) \ + DECLARE_INTERRUPT(226) \ + DECLARE_INTERRUPT(227) \ + DECLARE_INTERRUPT(228) \ + DECLARE_INTERRUPT(229) \ + DECLARE_INTERRUPT(230) \ + DECLARE_INTERRUPT(231) \ + DECLARE_INTERRUPT(232) \ + DECLARE_INTERRUPT(233) \ + DECLARE_INTERRUPT(234) \ + DECLARE_INTERRUPT(235) \ + DECLARE_INTERRUPT(236) \ + DECLARE_INTERRUPT(237) \ + DECLARE_INTERRUPT(238) \ + DECLARE_INTERRUPT(239) \ + DECLARE_INTERRUPT(240) \ + DECLARE_INTERRUPT(241) \ + DECLARE_INTERRUPT(242) \ + DECLARE_INTERRUPT(243) \ + DECLARE_INTERRUPT(244) \ + DECLARE_INTERRUPT(245) \ + DECLARE_INTERRUPT(246) \ + DECLARE_INTERRUPT(247) \ + DECLARE_INTERRUPT(248) \ + DECLARE_INTERRUPT(249) \ + DECLARE_INTERRUPT(250) \ + DECLARE_INTERRUPT(251) \ + DECLARE_INTERRUPT(252) \ + DECLARE_INTERRUPT(253) \ + DECLARE_INTERRUPT(254) \ + DECLARE_INTERRUPT(255)); diff --git a/include/asm-i386/interrupt.h b/include/asm-i386/interrupt.h index 7f408cb..3e2674a 100644 --- a/include/asm-i386/interrupt.h +++ b/include/asm-i386/interrupt.h @@ -43,31 +43,4 @@ extern char exception_stack[];

#define __isr__ void __attribute__ ((regparm(0)))

-#define DECLARE_INTERRUPT(x) \ - asm(".globl irq_"#x"\n" \ - "irq_"#x":\n" \ - "pusha \n" \ - "pushl $"#x"\n" \ - "pushl $irq_return\n" \ - "jmp do_irq\n"); \ - __isr__ irq_##x(void) - -#define DECLARE_EXCEPTION(x, f) \ - asm(".globl exp_"#x"\n" \ - "exp_"#x":\n" \ - "pusha \n" \ - "movl %esp, %ebx\n" \ - "movl $exception_stack, %eax\n" \ - "movl %eax, %esp \n" \ - "pushl %ebx\n" \ - "movl 32(%esp), %ebx\n" \ - "xorl %edx, %edx\n" \ - "movw 36(%esp), %dx\n" \ - "pushl %edx\n" \ - "pushl %ebx\n" \ - "pushl $"#x"\n" \ - "pushl $exp_return\n" \ - "jmp "#f"\n"); \ - __isr__ exp_##x(void) - #endif diff --git a/include/asm-i386/u-boot-i386.h b/include/asm-i386/u-boot-i386.h index 3921e01..dfec307 100644 --- a/include/asm-i386/u-boot-i386.h +++ b/include/asm-i386/u-boot-i386.h @@ -55,9 +55,6 @@ int timer_init(void); /* cpu/.../interrupts.c */ int cpu_init_interrupts(void);

-/* cpu/.../exceptions.c */ -int cpu_init_exceptions(void); - /* board/.../... */ int board_init(void); int dram_init(void); diff --git a/lib_i386/interrupts.c b/lib_i386/interrupts.c index 3f3613a..efbad72 100644 --- a/lib_i386/interrupts.c +++ b/lib_i386/interrupts.c @@ -109,8 +109,10 @@ void irq_free_handler(int irq) return; }

-__isr__ do_irq(int irq) +void do_irq(int hw_irq) { + int irq = hw_irq - 0x20; + if (irq < 0 || irq >= CONFIG_SYS_NUM_IRQS) { printf("do_irq: bad irq number %d\n", irq); return; diff --git a/lib_i386/pcat_interrupts.c b/lib_i386/pcat_interrupts.c index f01298e..67e6e97 100644 --- a/lib_i386/pcat_interrupts.c +++ b/lib_i386/pcat_interrupts.c @@ -40,45 +40,12 @@ #error "CONFIG_SYS_NUM_IRQS must equal 16 if CONFIG_SYS_NUM_IRQS is defined" #endif

-DECLARE_INTERRUPT(0); -DECLARE_INTERRUPT(1); -DECLARE_INTERRUPT(3); -DECLARE_INTERRUPT(4); -DECLARE_INTERRUPT(5); -DECLARE_INTERRUPT(6); -DECLARE_INTERRUPT(7); -DECLARE_INTERRUPT(8); -DECLARE_INTERRUPT(9); -DECLARE_INTERRUPT(10); -DECLARE_INTERRUPT(11); -DECLARE_INTERRUPT(12); -DECLARE_INTERRUPT(13); -DECLARE_INTERRUPT(14); -DECLARE_INTERRUPT(15); - int interrupt_init(void) { u8 i;

disable_interrupts();

- /* Setup interrupts */ - set_vector(0x20, irq_0); - set_vector(0x21, irq_1); - set_vector(0x23, irq_3); - set_vector(0x24, irq_4); - set_vector(0x25, irq_5); - set_vector(0x26, irq_6); - set_vector(0x27, irq_7); - set_vector(0x28, irq_8); - set_vector(0x29, irq_9); - set_vector(0x2a, irq_10); - set_vector(0x2b, irq_11); - set_vector(0x2c, irq_12); - set_vector(0x2d, irq_13); - set_vector(0x2e, irq_14); - set_vector(0x2f, irq_15); - /* Mask all interrupts */ outb(0xff, MASTER_PIC + IMR); outb(0xff, SLAVE_PIC + IMR);

Hides global symbols in inline asm to reduce size of dynamic symbol table

Signed-off-by: Graeme Russ graeme.russ@gmail.com --- board/eNET/eNET_start16.S | 2 + cpu/i386/cpu.c | 2 + cpu/i386/interrupts.c | 2 + lib_i386/bios.S | 70 +++++++++++++++++++++++++++++++++++++++++++++ lib_i386/bios_pci.S | 2 + 5 files changed, 78 insertions(+), 0 deletions(-)

diff --git a/board/eNET/eNET_start16.S b/board/eNET/eNET_start16.S index 48e4d83..af2c132 100644 --- a/board/eNET/eNET_start16.S +++ b/board/eNET/eNET_start16.S @@ -71,6 +71,8 @@ board_init16: .section .bios, "ax" .code16 .globl realmode_reset +.hidden realmode_reset +.type realmode_reset, @function realmode_reset: /* Alias MMCR to 0xdf000 */ movw $0xfffc, %dx diff --git a/cpu/i386/cpu.c b/cpu/i386/cpu.c index 8baf37d..4b68105 100644 --- a/cpu/i386/cpu.c +++ b/cpu/i386/cpu.c @@ -73,6 +73,8 @@ void __attribute__ ((regparm(0))) generate_gpf(void);

/* segment 0x70 is an arbitrary segment which does not exist */ asm(".globl generate_gpf\n" + ".hidden generate_gpf\n" + ".type generate_gpf, @function\n" "generate_gpf:\n" "ljmp $0x70, $0x47114711\n");

diff --git a/cpu/i386/interrupts.c b/cpu/i386/interrupts.c index d80cfb1..6d699e2 100644 --- a/cpu/i386/interrupts.c +++ b/cpu/i386/interrupts.c @@ -29,6 +29,8 @@

#define DECLARE_INTERRUPT(x) \ ".globl irq_"#x"\n" \ + ".hidden irq_"#x"\n" \ + ".type irq_"#x", @function\n" \ "irq_"#x":\n" \ "pushl %ebp\n" \ "movl %esp,%ebp\n" \ diff --git a/lib_i386/bios.S b/lib_i386/bios.S index d6ca3e3..48f1b81 100644 --- a/lib_i386/bios.S +++ b/lib_i386/bios.S @@ -50,134 +50,200 @@ jmp realmode_reset

.globl rm_int00 +.hidden rm_int00 +.type rm_int00, @function rm_int00: pushw $0 jmp any_interrupt16 .globl rm_int01 +.hidden rm_int01 +.type rm_int01, @function rm_int01: pushw $1 jmp any_interrupt16 .globl rm_int02 +.hidden rm_int02 +.type rm_int02, @function rm_int02: pushw $2 jmp any_interrupt16 .globl rm_int03 +.hidden rm_int03 +.type rm_int03, @function rm_int03: pushw $3 jmp any_interrupt16 .globl rm_int04 +.hidden rm_int04 +.type rm_int04, @function rm_int04: pushw $4 jmp any_interrupt16 .globl rm_int05 +.hidden rm_int05 +.type rm_int05, @function rm_int05: pushw $5 jmp any_interrupt16 .globl rm_int06 +.hidden rm_int06 +.type rm_int06, @function rm_int06: pushw $6 jmp any_interrupt16 .globl rm_int07 +.hidden rm_int07 +.type rm_int07, @function rm_int07: pushw $7 jmp any_interrupt16 .globl rm_int08 +.hidden rm_int08 +.type rm_int08, @function rm_int08: pushw $8 jmp any_interrupt16 .globl rm_int09 +.hidden rm_int09 +.type rm_int09, @function rm_int09: pushw $9 jmp any_interrupt16 .globl rm_int0a +.hidden rm_int0a +.type rm_int0a, @function rm_int0a: pushw $10 jmp any_interrupt16 .globl rm_int0b +.hidden rm_int0b +.type rm_int0b, @function rm_int0b: pushw $11 jmp any_interrupt16 .globl rm_int0c +.hidden rm_int0c +.type rm_int0c, @function rm_int0c: pushw $12 jmp any_interrupt16 .globl rm_int0d +.hidden rm_int0d +.type rm_int0d, @function rm_int0d: pushw $13 jmp any_interrupt16 .globl rm_int0e +.hidden rm_int0e +.type rm_int0e, @function rm_int0e: pushw $14 jmp any_interrupt16 .globl rm_int0f +.hidden rm_int0f +.type rm_int0f, @function rm_int0f: pushw $15 jmp any_interrupt16 .globl rm_int10 +.hidden rm_int10 +.type rm_int10, @function rm_int10: pushw $16 jmp any_interrupt16 .globl rm_int11 +.hidden rm_int11 +.type rm_int11, @function rm_int11: pushw $17 jmp any_interrupt16 .globl rm_int12 +.hidden rm_int12 +.type rm_int12, @function rm_int12: pushw $18 jmp any_interrupt16 .globl rm_int13 +.hidden rm_int13 +.type rm_int13, @function rm_int13: pushw $19 jmp any_interrupt16 .globl rm_int14 +.hidden rm_int14 +.type rm_int14, @function rm_int14: pushw $20 jmp any_interrupt16 .globl rm_int15 +.hidden rm_int15 +.type rm_int15, @function rm_int15: pushw $21 jmp any_interrupt16 .globl rm_int16 +.hidden rm_int16 +.type rm_int16, @function rm_int16: pushw $22 jmp any_interrupt16 .globl rm_int17 +.hidden rm_int17 +.type rm_int17, @function rm_int17: pushw $23 jmp any_interrupt16 .globl rm_int18 +.hidden rm_int18 +.type rm_int18, @function rm_int18: pushw $24 jmp any_interrupt16 .globl rm_int19 +.hidden rm_int19 +.type rm_int19, @function rm_int19: pushw $25 jmp any_interrupt16 .globl rm_int1a +.hidden rm_int1a +.type rm_int1a, @function rm_int1a: pushw $26 jmp any_interrupt16 .globl rm_int1b +.hidden rm_int1b +.type rm_int1b, @function rm_int1b: pushw $27 jmp any_interrupt16 .globl rm_int1c +.hidden rm_int1c +.type rm_int1c, @function rm_int1c: pushw $28 jmp any_interrupt16 .globl rm_int1d +.hidden rm_int1d +.type rm_int1d, @function rm_int1d: pushw $29 jmp any_interrupt16 .globl rm_int1e +.hidden rm_int1e +.type rm_int1e, @function rm_int1e: pushw $30 jmp any_interrupt16 .globl rm_int1f +.hidden rm_int1f +.type rm_int1f, @function rm_int1f: pushw $31 jmp any_interrupt16 .globl rm_def_int +.hidden rm_def_int +.type rm_def_int, @function rm_def_int: iret

@@ -454,9 +520,13 @@ Lfunc_b1h:

.globl ram_in_64kb_chunks +.hidden ram_in_64kb_chunks +.type ram_in_64kb_chunks, @function ram_in_64kb_chunks: .word 0

.globl bios_equipment +.hidden bios_equipment +.type bios_equipment, @function bios_equipment: .word 0 diff --git a/lib_i386/bios_pci.S b/lib_i386/bios_pci.S index 67fd00b..9e412e5 100644 --- a/lib_i386/bios_pci.S +++ b/lib_i386/bios_pci.S @@ -34,6 +34,8 @@ .section .bios, "ax" .code16 .globl realmode_pci_bios_call_entry +.hidden realmode_pci_bios_call_entry +.type realmode_pci_bios_call_entry, @function realmode_pci_bios_call_entry: MAKE_BIOS_STACK call realmode_pci_bios

Signed-off-by: Graeme Russ graeme.russ@gmail.com --- board/eNET/config.mk | 2 + board/eNET/eNET.c | 17 +++-- board/eNET/u-boot.lds | 34 +++++++-- cpu/i386/cpu.c | 12 ++- cpu/i386/interrupts.c | 4 +- cpu/i386/start.S | 132 ++++------------------------------ include/asm-i386/u-boot-i386.h | 14 +--- lib_i386/board.c | 155 +++++++++++++++++++++++----------------- lib_i386/interrupts.c | 4 +- lib_i386/timer.c | 2 +- 10 files changed, 159 insertions(+), 217 deletions(-)

diff --git a/board/eNET/config.mk b/board/eNET/config.mk index c9703ea..5c64804 100644 --- a/board/eNET/config.mk +++ b/board/eNET/config.mk @@ -23,4 +23,6 @@

TEXT_BASE = 0x38040000 CFLAGS_dlmalloc.o += -Wa,--no-warn -fno-strict-aliasing +PLATFORM_RELFLAGS += -fvisibility=hidden PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm +PLATFORM_LDFLAGS += -pic --emit-relocs -Bsymbolic -Bsymbolic-functions diff --git a/board/eNET/eNET.c b/board/eNET/eNET.c index 29cf295..baf7c95 100644 --- a/board/eNET/eNET.c +++ b/board/eNET/eNET.c @@ -47,7 +47,6 @@ void init_sc520_enet (void) { /* Set CPU Speed to 100MHz */ sc520_mmcr->cpuctl = 0x01; - gd->cpu_clk = 100000000;

/* wait at least one millisecond */ asm("movl $0x2000,%%ecx\n" @@ -67,7 +66,7 @@ void init_sc520_enet (void) /* * Miscellaneous platform dependent initializations */ -int board_init(void) +int board_early_init_f(void) { init_sc520_enet();

@@ -117,12 +116,20 @@ int board_init(void) sc520_mmcr->sysarbctl = 0x06; sc520_mmcr->sysarbmenb = 0x0003;

- /* Crystal is 33.000MHz */ - gd->bus_clk = 33000000; - return 0; }

+int board_early_init_r(void) +{ + /* CPU Speed to 100MHz */ + gd->cpu_clk = 100000000; + + /* Crystal is 33.000MHz */ + gd->bus_clk = 33000000; + + return 0; +} + int dram_init(void) { init_sc520_dram(); diff --git a/board/eNET/u-boot.lds b/board/eNET/u-boot.lds index 4ea424d..8f9885b 100644 --- a/board/eNET/u-boot.lds +++ b/board/eNET/u-boot.lds @@ -28,28 +28,48 @@ ENTRY(_start) SECTIONS { . = 0x38040000; /* Location of bootcode in flash */ + _i386boot_text_start = .; .text : { *(.text); }

. = ALIGN(4); .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }

_i386boot_text_size = SIZEOF(.text) + SIZEOF(.rodata); + . = ALIGN(4); + + .data : { *(.data) } + . = ALIGN(4); + + .interp : { *(.interp) } + . = ALIGN(4); + + .dynsym : { *(.dynsym) } + . = ALIGN(4);

- . = 0x03FF0000; /* Ram data segment to use */ - _i386boot_romdata_dest = ABSOLUTE(.); - .data : AT ( LOADADDR(.rodata) + SIZEOF(.rodata) ) { *(.data) } - _i386boot_romdata_start = LOADADDR(.data); + .dynstr : { *(.dynstr) } + . = ALIGN(4); + + .hash : { *(.hash) } + . = ALIGN(4);

+ .got : { *(.got) } . = ALIGN(4); - .got : AT ( LOADADDR(.data) + SIZEOF(.data) ) { *(.got) }

+ .got.plt : { *(.got.plt) } . = ALIGN(4); + + .dynamic (NOLOAD) : { *(.dynamic) } + . = ALIGN(4); + __u_boot_cmd_start = .; .u_boot_cmd : { *(.u_boot_cmd) } + . = ALIGN(4); __u_boot_cmd_end = .; _i386boot_cmd_start = LOADADDR(.u_boot_cmd);

- _i386boot_romdata_size = SIZEOF(.data) + SIZEOF(.got) + SIZEOF(.u_boot_cmd); + _i386boot_rel_dyn_start = .; + .rel.dyn : { *(.rel.dyn) } + _i386boot_rel_dyn_end = .;

. = ALIGN(4); _i386boot_bss_start = ABSOLUTE(.); @@ -57,7 +77,7 @@ SECTIONS _i386boot_bss_size = SIZEOF(.bss);

/* 16bit realmode trampoline code */ - .realmode 0x7c0 : AT ( LOADADDR(.got) + SIZEOF(.got) + SIZEOF(.u_boot_cmd)) { *(.realmode) } + .realmode 0x7c0 : AT ( LOADADDR(.rel.dyn) + SIZEOF(.rel.dyn) ) { *(.realmode) }

_i386boot_realmode = LOADADDR(.realmode); _i386boot_realmode_size = SIZEOF(.realmode); diff --git a/cpu/i386/cpu.c b/cpu/i386/cpu.c index 4b68105..e9c0739 100644 --- a/cpu/i386/cpu.c +++ b/cpu/i386/cpu.c @@ -37,7 +37,7 @@ #include <command.h> #include <asm/interrupt.h>

-int cpu_init(void) +int cpu_init_f(void) { /* initialize FPU, reset EM, set MP and NE */ asm ("fninit\n" \ @@ -46,12 +46,16 @@ int cpu_init(void) "orl $0x22, %eax\n" \ "movl %eax, %cr0\n" );

- /* Initialize core interrupt and exception functionality of CPU */ - cpu_init_interrupts (); - return 0; }

+int cpu_init_r(void) +{ + /* Initialize core interrupt and exception functionality of CPU */ + cpu_init_interrupts (); + return 0; +} + int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) { printf ("resetting ...\n"); diff --git a/cpu/i386/interrupts.c b/cpu/i386/interrupts.c index 6d699e2..f3b9e63 100644 --- a/cpu/i386/interrupts.c +++ b/cpu/i386/interrupts.c @@ -63,8 +63,8 @@ static inline void load_idt(const struct desc_ptr *dtr)

void set_vector(u8 intnum, void *routine) { - idt[intnum].base_high = (u16)((u32)(routine + gd->reloc_off) >> 16); - idt[intnum].base_low = (u16)((u32)(routine + gd->reloc_off) & 0xffff); + idt[intnum].base_high = (u16)((u32)(routine) >> 16); + idt[intnum].base_low = (u16)((u32)(routine) & 0xffff); }

void irq_0(void); diff --git a/cpu/i386/start.S b/cpu/i386/start.S index 59089ef..25d32e6 100644 --- a/cpu/i386/start.S +++ b/cpu/i386/start.S @@ -63,11 +63,8 @@ early_board_init_ret: jmp mem_init mem_init_ret:

- /* check ammount of configured memory - * (we need atleast bss start+bss size+stack size) */ - movl $_i386boot_bss_start, %ecx /* BSS start */ - addl $_i386boot_bss_size, %ecx /* BSS size */ - addl $CONFIG_SYS_STACK_SIZE, %ecx + /* Check we have enough memory for stack */ + movl $CONFIG_SYS_STACK_SIZE, %ecx cmpl %ecx, %eax jae mem_ok

@@ -78,6 +75,8 @@ mem_init_ret: .progress0a: jmp die mem_ok: + /* Set stack pointer to upper memory limit*/ + movl %eax, %esp

/* indicate progress */ movw $0x02, %ax @@ -85,12 +84,7 @@ mem_ok: jmp show_boot_progress_asm .progress1:

- /* create a stack after the bss */ - movl $_i386boot_bss_start, %eax - addl $_i386boot_bss_size, %eax - addl $CONFIG_SYS_STACK_SIZE, %eax - movl %eax, %esp - + /* Test the stack */ pushl $0 popl %eax cmpl $0, %eax @@ -116,115 +110,19 @@ stack_ok: jmp show_boot_progress_asm .progress2:

- /* copy data section to ram, size must be 4-byte aligned */ - movl $_i386boot_romdata_dest, %edi /* destination address */ - movl $_i386boot_romdata_start, %esi /* source address */ - movl $_i386boot_romdata_size, %ecx /* number of bytes to copy */ - movl %ecx, %eax - andl $3, %eax - jnz data_fail - - shrl $2, %ecx /* copy 4 byte each time */ - cld - cmpl $0, %ecx - je data_ok -data_segment: - movsl - loop data_segment - jmp data_ok -data_fail: - /* indicate (lack of) progress */ - movw $0x83, %ax - movl $.progress2a, %ebp - jmp show_boot_progress_asm -.progress2a: - jmp die - -data_ok: - - /* indicate progress */ - movw $0x04, %ax - movl $.progress3, %ebp - jmp show_boot_progress_asm -.progress3: - - /* clear bss section in ram, size must be 4-byte aligned */ - movl $_i386boot_bss_start, %edi /* MK_CHG BSS start */ - movl $_i386boot_bss_size, %ecx /* BSS size */ - movl %ecx, %eax - andl $3, %eax - jnz bss_fail - shrl $2, %ecx /* clear 4 byte each time */ - cld - cmpl $0, %ecx - je bss_ok -bss: - movl $0, (%edi) - add $4, %edi - loop bss - jmp bss_ok - -bss_fail: - /* indicate (lack of) progress */ - movw $0x84, %ax - movl $.progress3a, %ebp - jmp show_boot_progress_asm -.progress3a: - jmp die - -bss_ok: -#ifndef CONFIG_SKIP_RELOCATE_UBOOT - /* indicate progress */ - movw $0x06, %ax - movl $.progress6, %ebp - jmp show_boot_progress_asm -.progress6: - - /* copy text section to ram, size must be 4-byte aligned */ - movl $CONFIG_SYS_BL_START_RAM, %edi /* destination address */ - movl $TEXT_BASE, %esi /* source address */ - movl $_i386boot_text_size, %ecx /* number of bytes to copy */ - movl %ecx, %eax - andl $3, %eax - jz text_copy /* Already 4-byte aligned */ - subl $4, %eax /* Add extra bytes to size */ - addl %eax, %ecx -text_copy: - shrl $2, %ecx /* copy 4 byte each time */ - cld - cmpl $0, %ecx - je text_ok -text_segment: - movsl - loop text_segment - jmp text_ok -text_fail: - /* indicate (lack of) progress */ - movw $0x86, %ax - movl $.progress5a, %ebp - jmp show_boot_progress_asm -.progress5a: - jmp die - -text_ok: -#endif wbinvd

+ /* Get upper memory limit */ + movl %esp, %ecx + subl $CONFIG_SYS_STACK_SIZE, %ecx

- /* indicate progress */ - movw $0x05, %ax - movl $.progress4, %ebp - jmp show_boot_progress_asm -.progress4: - -#ifndef CONFIG_SKIP_RELOCATE_UBOOT - /* Jump to the RAM copy of start_i386boot */ - movl $start_i386boot, %ebp - addl $(CONFIG_SYS_BL_START_RAM - TEXT_BASE), %ebp - call *%ebp /* Enter, U-boot! */ -#else - call start_i386boot /* Enter, U-boot! */ -#endif + /* Create a Stack Frame */ + pushl %ebp + movl %esp, %ebp + + /* stack_limit parameter */ + pushl %ecx + call board_init_f /* Enter, U-boot! */

/* indicate (lack of) progress */ movw $0x85, %ax diff --git a/include/asm-i386/u-boot-i386.h b/include/asm-i386/u-boot-i386.h index 1e8def7..7c99c8c 100644 --- a/include/asm-i386/u-boot-i386.h +++ b/include/asm-i386/u-boot-i386.h @@ -24,19 +24,9 @@ #ifndef _U_BOOT_I386_H_ #define _U_BOOT_I386_H_ 1

-/* for the following variables, see start.S */ -extern ulong i386boot_start; /* code start (in flash) */ -extern ulong i386boot_end; /* code end (in flash) */ -extern ulong i386boot_romdata_start;/* datasegment in flash (also code+rodata end) */ -extern ulong i386boot_romdata_dest; /* data location segment in ram */ -extern ulong i386boot_romdata_size; /* size of data segment */ -extern ulong i386boot_bss_start; /* bss start */ -extern ulong i386boot_bss_size; /* bss size */ -extern ulong i386boot_stack_end; /* first usable RAM address after bss and stack */ -extern ulong i386boot_ram_end; /* end of ram */ - /* cpu/.../cpu.c */ -int cpu_init(void); +int cpu_init_r(void); +int cpu_init_f(void);

/* cpu/.../timer.c */ void timer_isr(void *); diff --git a/lib_i386/board.c b/lib_i386/board.c index 44fa0e3..c16c391 100644 --- a/lib_i386/board.c +++ b/lib_i386/board.c @@ -38,6 +38,7 @@ #include <net.h> #include <ide.h> #include <asm/u-boot-i386.h> +#include <elf.h>

#ifdef CONFIG_BITBANGMII #include <miiphy.h> @@ -45,41 +46,16 @@

DECLARE_GLOBAL_DATA_PTR;

-extern long _i386boot_start; -extern long _i386boot_end; -extern long _i386boot_romdata_start; -extern long _i386boot_romdata_dest; -extern long _i386boot_romdata_size; -extern long _i386boot_bss_start; -extern long _i386boot_bss_size; - -/* The symbols defined by the linker script becomes pointers - * which is somewhat inconveient ... */ -ulong i386boot_start = (ulong)&_i386boot_start; /* code start (in flash) defined in start.S */ -ulong i386boot_end = (ulong)&_i386boot_end; /* code end (in flash) */ -ulong i386boot_romdata_start = (ulong)&_i386boot_romdata_start; /* datasegment in flash (also code+rodata end) */ -ulong i386boot_romdata_dest = (ulong)&_i386boot_romdata_dest; /* data location segment in ram */ -ulong i386boot_romdata_size = (ulong)&_i386boot_romdata_size; /* size of data segment */ -ulong i386boot_bss_start = (ulong)&_i386boot_bss_start; /* bss start */ -ulong i386boot_bss_size = (ulong)&_i386boot_bss_size; /* bss size */ - +/* Exports from the Linker Script */ +extern ulong _i386boot_text_start; +extern ulong _i386boot_rel_dyn_start; +extern ulong _i386boot_rel_dyn_end; +extern ulong _i386boot_bss_start; +extern ulong _i386boot_bss_size; +void ram_bootstrap (void *); const char version_string[] = U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")";

-static int heap_init(void) -{ - /* start malloc area right after the stack */ - ulong start = i386boot_bss_start + i386boot_bss_size + - CONFIG_SYS_STACK_SIZE; - - /* 4-byte aligned */ - start = (start+3)&~3; - - mem_malloc_init(start, CONFIG_SYS_MALLOC_LEN); - - return 0; -} - /************************************************************************ * Init Utilities * ************************************************************************ @@ -103,6 +79,7 @@ static int display_banner (void) {

printf ("\n\n%s\n\n", version_string); +/* printf ("U-Boot code: %08lX -> %08lX data: %08lX -> %08lX\n" " BSS: %08lX -> %08lX stack: %08lX -> %08lX\n", i386boot_start, i386boot_romdata_start-1, @@ -111,6 +88,7 @@ static int display_banner (void) i386boot_bss_start+i386boot_bss_size, i386boot_bss_start+i386boot_bss_size+CONFIG_SYS_STACK_SIZE-1);

+*/

return (0); } @@ -142,7 +120,6 @@ static void display_flash_config (ulong size) print_size (size, "\n"); }

- /* * Breath some life into the board... * @@ -154,6 +131,7 @@ static void display_flash_config (ulong size) * can relocate the monitor code to RAM. */

+ /* * All attempts to come up with a "common" initialization sequence * that works for all boards and architectures failed: some of the @@ -169,13 +147,12 @@ static void display_flash_config (ulong size) typedef int (init_fnc_t) (void);

init_fnc_t *init_sequence[] = { - cpu_init, /* basic cpu dependent setup */ - board_init, /* basic board dependent setup */ + serial_init, + cpu_init_r, /* basic cpu dependent setup */ + board_early_init_r, /* basic board dependent setup */ dram_init, /* configure available RAM banks */ - heap_init, /* dependant on dram_init */ interrupt_init, /* set up exceptions */ timer_init, - serial_init, env_init, /* initialize environment */ init_baudrate, /* initialze baudrate settings */ serial_init, /* serial communications setup */ @@ -187,21 +164,86 @@ init_fnc_t *init_sequence[] = {

gd_t *gd;

-void start_i386boot (void) +/* + * Load U-Boot into RAM, initialize BSS, perform relocation adjustments + */ +void board_init_f (ulong stack_limit) +{ + void *text_start = &_i386boot_text_start; + void *u_boot_cmd_end = &__u_boot_cmd_end; + Elf32_Rel *rel_dyn_start = (Elf32_Rel *)&_i386boot_rel_dyn_start; + Elf32_Rel *rel_dyn_end = (Elf32_Rel *)&_i386boot_rel_dyn_end; + void *bss_start = &_i386boot_bss_start; + void *bss_size = &_i386boot_bss_size; + + size_t uboot_size; + void *ram_start; + ulong rel_offset; + Elf32_Rel *re; + + void (*start_func)(void *); + + /* compiler optimization barrier needed for GCC >= 3.4 */ + __asm__ __volatile__("": : :"memory"); + + uboot_size = (size_t)u_boot_cmd_end - (size_t)text_start; + ram_start = (void *)stack_limit - (uboot_size + (ulong)bss_size); + rel_offset = text_start - ram_start; + start_func = ram_bootstrap - rel_offset; + + /* First stage CPU initialization */ + if (cpu_init_f() != 0) + hang(); + + /* First stage Board initialization */ + if (board_early_init_f() != 0) + hang(); + + /* Copy U-Boot into RAM */ + memcpy(ram_start, text_start, (size_t)uboot_size); + + /* Clear BSS */ + memset(bss_start - rel_offset, 0, (size_t)bss_size); + + /* Perform relocation adjustments */ + for (re = rel_dyn_start; re < rel_dyn_end; re++) + { + if (re->r_offset >= TEXT_BASE) + if (*(ulong *)re->r_offset >= TEXT_BASE) + *(ulong *)(re->r_offset - rel_offset) -= (Elf32_Addr)rel_offset; + } + + start_func(ram_start); + + /* NOTREACHED - relocate_code() does not return */ + while(1); +} + +/* + * All attempts to jump straight from board_init_f() to board_init_r() + * have failed, hence this special 'bootstrap' function. + */ +void ram_bootstrap (void *ram_start) +{ + static gd_t gd_data; + + /* compiler optimization barrier needed for GCC >= 3.4 */ + __asm__ __volatile__("": : :"memory"); + + board_init_r(&gd_data, (ulong)ram_start); +} + +void board_init_r(gd_t *id, ulong ram_start) { char *s; int i; ulong size; - static gd_t gd_data; static bd_t bd_data; init_fnc_t **init_fnc_ptr;

-#ifndef CONFIG_SKIP_RELOCATE_UBOOT - cmd_tbl_t *p; -#endif show_boot_progress(0x21);

- gd = &gd_data; + gd = id; /* compiler optimization barrier needed for GCC >= 3.4 */ __asm__ __volatile__("": : :"memory");

@@ -212,10 +254,9 @@ void start_i386boot (void)

gd->baudrate = CONFIG_BAUDRATE;

-#ifndef CONFIG_SKIP_RELOCATE_UBOOT - /* Need to set relocation offset here for interrupt initialization */ - gd->reloc_off = CONFIG_SYS_BL_START_RAM - TEXT_BASE; -#endif + mem_malloc_init((((ulong)ram_start - CONFIG_SYS_MALLOC_LEN)+3)&~3, + CONFIG_SYS_MALLOC_LEN); + for (init_fnc_ptr = init_sequence, i=0; *init_fnc_ptr; ++init_fnc_ptr, i++) { show_boot_progress(0xa130|i);

@@ -225,26 +266,6 @@ void start_i386boot (void) } show_boot_progress(0x23);

-#ifndef CONFIG_SKIP_RELOCATE_UBOOT - for (p = &__u_boot_cmd_start; p != &__u_boot_cmd_end; p++) { - ulong addr; - addr = (ulong) (p->cmd) + gd->reloc_off; - p->cmd = (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr; - addr = (ulong)(p->name) + gd->reloc_off; - p->name = (char *)addr; - - if (p->usage != NULL) { - addr = (ulong)(p->usage) + gd->reloc_off; - p->usage = (char *)addr; - } - #ifdef CONFIG_SYS_LONGHELP - if (p->help != NULL) { - addr = (ulong)(p->help) + gd->reloc_off; - p->help = (char *)addr; - } - #endif - } -#endif /* configure available FLASH banks */ size = flash_init(); display_flash_config(size); diff --git a/lib_i386/interrupts.c b/lib_i386/interrupts.c index efbad72..51def59 100644 --- a/lib_i386/interrupts.c +++ b/lib_i386/interrupts.c @@ -70,12 +70,12 @@ void irq_install_handler(int irq, interrupt_handler_t *handler, void *arg)

if (irq_handlers[irq].handler != NULL) printf("irq_install_handler: 0x%08lx replacing 0x%08lx\n", - (ulong) handler + gd->reloc_off, + (ulong) handler, (ulong) irq_handlers[irq].handler);

status = disable_interrupts ();

- irq_handlers[irq].handler = handler + gd->reloc_off; + irq_handlers[irq].handler = handler; irq_handlers[irq].arg = arg; irq_handlers[irq].count = 0;

diff --git a/lib_i386/timer.c b/lib_i386/timer.c index 58a0212..5cb1f54 100644 --- a/lib_i386/timer.c +++ b/lib_i386/timer.c @@ -51,7 +51,7 @@ int register_timer_isr (timer_fnc_t *isr_func) if (new_func == NULL) return 1;

- new_func->isr_func = isr_func + gd->reloc_off; + new_func->isr_func = isr_func; new_func->next = NULL;

/*