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bsp/raspberrypi: Fix size of work area.

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The BSP tried to get the size of the SDRAM based on the revision code.
Unfortunately the code had some bugs so that the default size has been
used. Beneath that the MMU table hasn't been adapted.

This patch queries the SDRAM size via a special VC Mailbox call instead.
For the MMU adaption a simmilar method to the one in the imx BSP is
used.
This commit is contained in:
Christian Mauderer
2019-12-27 22:08:12 +01:00
parent c51f1fc526
commit f1f6cd95c9
5 changed files with 80 additions and 189 deletions
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11
bsps/arm/raspberrypi/include/bsp/vc.h
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@@ -138,6 +138,17 @@ int bcm2835_mailbox_get_board_model( bcm2835_get_board_spec_entries *_entries );
int bcm2835_mailbox_get_board_revision(
bcm2835_get_board_spec_entries *_entries );
/*
* See the official documentation for the format of the revision codes:
* https://www.raspberrypi.org/documentation/hardware/raspberrypi/revision-codes/README.md
*/
#define BCM2835_REVISION_IS_NEW_STYLE(revision) ((revision & (1 << 23)) != 0)
#define BCM2835_REVISION_MEMORY_SIZE(revision) ((revision >> 20) & 0x7)
#define BCM2835_REVISION_MANUFACTURER(revision) ((revision >> 16) & 0xf)
#define BCM2835_REVISION_PROCESSOR(revision) ((revision >> 12) & 0xf)
#define BCM2835_REVISION_TYPE(revision) ((revision >> 4) & 0xff)
#define BCM2835_REVISION_REVISION(revision) ((revision >> 0) & 0xf)
typedef struct {
uint64_t board_serial;
} bcm2835_get_board_serial_entries;