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mb/emulation/qemu-armv7: Fix board

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Fix multiple issues allowing to boot until "Payload not loaded":

* The FMAP_CACHE was placed in memory mapped flash
  - Place the FMAP_CACHE in DRAM.
* The FMAP_CACHE was overlapping the BOOTBLOCK, which has a default size
  of 128KiB.
  - Increase the bootblock size in memlayout to 128KiB to match the FMAP.
* The heap in bootblock wasn't usable.
  - Add a linking check in armv7 common bootblock to relocate itself to
    the linked address.
* A FIT payload couldn't be compiled in as the POSTRAM_CBFS_CACHE was
  missing.
  - Add the POSTRAM_CBFS_CACHE to memlayout.
* The coreboot log is spammed with missing timestamp table error messages
  - Add TIMESTAMP table to memlayout.

Tested on QEMU armv7 vexpress.

Change-Id: Ib9357a5c059ca179826c5a7e7616a5c688ec2e95
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39187
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
This commit is contained in:
Patrick Rudolph 2020-03-01 10:02:50 +01:00 committed by Patrick Georgi
parent 935495f3e7
commit 6588652ef5
2 changed files with 39 additions and 8 deletions
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33
src/arch/arm/armv7/bootblock.S
View file

@ -62,14 +62,43 @@ init_stack_loop:
cmp r0, r1
bne init_stack_loop
/* Set stackpointer in internal RAM */
ldr sp, =_estack
/*
* For platforms where the flash is memory mapped (qemu), check if the
* bootblock needs to relocate itself.
*/
check_position:
adr r0, check_position
ldr r1, =check_position
cmp r0, r1
beq call_bootblock
/* Calculate source */
ldr r2, =_program
sub r1, r1, r2
sub r1, r0, r1
/* Get destination */
ldr r0, =_program
/* Get size */
ldr r2, =_eprogram
sub r2, r2, r0
bl memcpy
/* Get absolute address */
ldr lr, =call_bootblock
/* Directly modify pc as branch instruction changes the state */
mov pc, lr
call_bootblock:
/* Restore parameter passed in by maskrom/vendor firmware. */
ldr r0, =maskrom_param
str r10, [r0]
/* Set stackpointer in internal RAM to call bootblock main() */
ldr sp, =_estack
ldr r0,=0x00000000
/*
* The current design of cpu_info places the struct at the top of the

14
src/mainboard/emulation/qemu-armv7/memlayout.ld
View file

@ -28,14 +28,16 @@ SECTIONS
{
/* TODO: does this thing emulate SRAM? */
BOOTBLOCK(0x00000, 64K)
FMAP_CACHE(0x10000, 2K)
REGION(flash, 0, CONFIG_ROM_SIZE, 4K)
DRAM_START(0x60000000)
STACK(0x60000000, 64K)
ROMSTAGE(0x60010000, 128K)
RAMSTAGE(0x60030000, 16M)
BOOTBLOCK(0x60010000, 128K)
FMAP_CACHE(0x60030000, 4K)
TIMESTAMP(0x60031000, 1K)
/* TODO: Implement MMU support and move TTB to a better location. */
TTB(0x61030000, 16K)
TTB(0x60034000, 16K)
ROMSTAGE(0x60038000, 128K)
RAMSTAGE(0x60060000, 16M)
POSTRAM_CBFS_CACHE(0x61060000, 8M)
}