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https://github.com/drasko/codezero.git
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Removed AB926 platform
This commit is contained in:
Amit Mahajan
@@ -1,10 +0,0 @@
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# Inherit global environment
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Import('env')
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# The set of source files associated with this SConscript file.
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src_local = ['printascii.S','platform.c', 'uart.c', 'timer.c', 'irq.c']
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obj = env.Object(src_local)
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Return('obj')
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@@ -1,57 +0,0 @@
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/*
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* Support for generic irq handling using platform irq controller (PL190)
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*
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* Copyright (C) 2007 Bahadir Balban
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*/
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#include <l4/generic/platform.h>
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#include <l4/generic/irq.h>
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#include <l4/generic/time.h>
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#include INC_PLAT(irq.h)
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#include INC_PLAT(platform.h)
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#include INC_ARCH(exception.h)
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#include <l4/drivers/irq/pl190/pl190_vic.h>
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#include <l4/drivers/timer/sp804/sp804_timer.h>
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struct irq_chip irq_chip_array[IRQ_CHIPS_MAX] = {
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[0] = {
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.name = "Vectored irq controller",
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.level = 0,
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.cascade = IRQ_SIC,
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.offset = 0,
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.ops = {
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.init = pl190_vic_init,
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.read_irq = pl190_read_irq,
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.ack_and_mask = pl190_mask_irq,
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.unmask = pl190_unmask_irq,
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},
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},
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[1] = {
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.name = "Secondary irq controller",
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.level = 1,
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.cascade = IRQ_NIL,
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.offset = SIRQ_CHIP_OFFSET,
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.ops = {
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.init = pl190_sic_init,
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.read_irq = pl190_sic_read_irq,
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.ack_and_mask = pl190_sic_mask_irq,
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.unmask = pl190_sic_unmask_irq,
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},
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},
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};
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static int platform_timer_handler(void)
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{
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sp804_irq_handler();
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return do_timer_irq();
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}
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/* Built-in irq handlers initialised at compile time.
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* Else register with register_irq() */
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struct irq_desc irq_desc_array[IRQS_MAX] = {
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[IRQ_TIMER01] = {
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.name = "Timer01",
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.chip = &irq_chip_array[0],
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.handler = platform_timer_handler,
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},
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};
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@@ -1,62 +0,0 @@
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/*
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* PB926 platform-specific initialisation and setup
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*
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* Copyright (C) 2007 Bahadir Balban
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*/
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#include <l4/generic/platform.h>
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#include <l4/generic/space.h>
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#include <l4/generic/irq.h>
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#include INC_ARCH(linker.h)
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#include INC_PLAT(printascii.h)
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#include INC_SUBARCH(mm.h)
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#include INC_SUBARCH(mmu_ops.h)
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#include INC_GLUE(memory.h)
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#include INC_GLUE(memlayout.h)
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#include INC_PLAT(offsets.h)
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#include INC_PLAT(platform.h)
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#include INC_PLAT(uart.h)
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#include INC_PLAT(irq.h)
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#include INC_ARCH(asm.h)
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void init_platform_console(void)
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{
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add_boot_mapping(PB926_UART0_BASE, PL011_BASE, PAGE_SIZE,
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MAP_IO_DEFAULT_FLAGS);
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/*
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* Map same UART IO area to userspace so that primitive uart-based
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* userspace printf can work. Note, this raw mapping is to be
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* removed in the future, when file-based io is implemented.
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*/
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add_boot_mapping(PB926_UART0_BASE, USERSPACE_UART_BASE, PAGE_SIZE,
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MAP_USR_IO_FLAGS);
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uart_init();
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}
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void init_platform_timer(void)
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{
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add_boot_mapping(PB926_TIMER01_BASE, PLATFORM_TIMER_BASE, PAGE_SIZE,
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MAP_IO_DEFAULT_FLAGS);
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add_boot_mapping(PB926_SYSCTRL_BASE, PB926_SYSCTRL_VBASE, PAGE_SIZE,
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MAP_IO_DEFAULT_FLAGS);
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timer_init();
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}
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void init_platform_irq_controller()
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{
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add_boot_mapping(PB926_VIC_BASE, PLATFORM_IRQCTRL_BASE, PAGE_SIZE,
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MAP_IO_DEFAULT_FLAGS);
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add_boot_mapping(PB926_SIC_BASE, PLATFORM_SIRQCTRL_BASE, PAGE_SIZE,
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MAP_IO_DEFAULT_FLAGS);
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irq_controllers_init();
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}
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void platform_init(void)
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{
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init_platform_console();
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init_platform_timer();
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init_platform_irq_controller();
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}
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@@ -1,110 +0,0 @@
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/*
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* Basic UART printing.
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*/
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#include INC_ARCH(asm.h)
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#include INC_GLUE(memlayout.h)
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#define UART_DATA_OFFSET 0x0
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.macro uart_address rx
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mrc p15, 0, \rx, c1, c0
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tst \rx, #1 @ MMU enabled?
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moveq \rx, #0x10000000
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orreq \rx, \rx, #0x001F0000
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orreq \rx, \rx, #0x00001000
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/* FIXME: This offset is incorrect */
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movne \rx, #0xf9000000 @#IO_AREA0_VADDR
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addne \rx, \rx, #PB926_UART0_VOFFSET @ UART0 page offset from
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@ virtual io area base.
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.endm
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.macro uart_send, ry, rx
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strb \ry, [\rx, #UART_DATA_OFFSET]
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.endm
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.macro uart_wait, ry, rx
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501:
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ldr \ry, [\rx, #0x18]
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tst \ry, #1 << 5
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bne 501b
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.endm
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.macro uart_busy, ry, rx
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501:
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ldr \ry, [\rx, #0x18]
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tst \ry, #1 << 3
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bne 501b
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.endm
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.text
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/*
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* Useful debugging routines
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*/
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BEGIN_PROC(printhex8)
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mov r1, #8
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b printhex
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BEGIN_PROC(printhex4)
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mov r1, #4
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b printhex
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BEGIN_PROC(printhex2)
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mov r1, #2
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printhex: adr r2, hexbuf
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@printhex: ldr r2, =hexbuf
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add r3, r2, r1
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mov r1, #0
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strb r1, [r3]
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1: and r1, r0, #15
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mov r0, r0, lsr #4
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cmp r1, #10
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addlt r1, r1, #'0'
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addge r1, r1, #'a' - 10
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strb r1, [r3, #-1]!
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teq r3, r2
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bne 1b
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mov r0, r2
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b printascii
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.ltorg
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.align
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@ vmem-linked image has strings in vmem addresses. This replaces
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@ the reference with corresponding physical address. Note this
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@ won't work if memory offsets aren't clear cut values for
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@ orr'ing and bic'ing. rm = mmu bits rs = string address.
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.macro get_straddr rs, rm
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mrc p15, 0, \rm, c1, c0 @ Get MMU bits.
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tst \rm, #1 @ MMU enabled?
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@subeq \rs, \rs, #KERNEL_AREA_START
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biceq \rs, \rs, #KERNEL_AREA_START @ Clear Virtual mem offset.
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@orreq \rs, \rs, #PHYS_ADDR_BASE @ Add Phy mem offset.
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.endm
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BEGIN_PROC(printascii)
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get_straddr r0, r1
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uart_address r3
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b 2f
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1: uart_wait r2, r3
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uart_send r1, r3
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uart_busy r2, r3
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teq r1, #'\n'
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moveq r1, #'\r'
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beq 1b
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2: teq r0, #0
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ldrneb r1, [r0], #1
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teqne r1, #0
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bne 1b
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mov pc, lr
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END_PROC(printascii)
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BEGIN_PROC(printch)
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uart_address r3
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mov r1, r0
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mov r0, #0
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b 1b
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hexbuf: .space 16
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@@ -1,28 +0,0 @@
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/*
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* Ties up platform timer with generic timer api
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*
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* Copyright (C) 2007 Bahadir Balban
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*
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*/
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#include <l4/generic/irq.h>
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#include <l4/generic/platform.h>
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#include INC_PLAT(platform.h)
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#include <l4/drivers/timer/sp804/sp804_timer.h>
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#include <l4/drivers/misc/sp810/sp810_sysctrl.h>
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void timer_init(void)
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{
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/* Set timer 0 to 1MHz */
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sp810_set_timclk(0, 1);
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/* Initialise timer */
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sp804_init();
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}
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void timer_start(void)
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{
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irq_enable(IRQ_TIMER01);
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sp804_set_irq(0, 1); /* Enable timer0 irq */
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sp804_enable(0, 1); /* Enable timer0 */
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}
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@@ -1,28 +0,0 @@
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/*
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* Ties up platform's uart driver functions with generic API
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*
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* Copyright (C) 2007 Bahadir Balban
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*/
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#include <l4/generic/platform.h>
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#include INC_PLAT(platform.h)
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#include <l4/drivers/uart/pl011/pl011_uart.h>
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extern struct pl011_uart uart;
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void uart_init()
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{
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uart.base = PL011_BASE;
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uart.ops.initialise(&uart);
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}
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/* Generic uart function that lib/putchar.c expects to see implemented */
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void uart_putc(char c)
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{
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int res;
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/* Platform specific uart implementation */
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do {
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res = uart.ops.tx_char(c);
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} while (res < 0);
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}
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