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| author | Neil Armstrong <narmstrong@baylibre.com> | 2019-07-22 11:32:50 +0200 |
|---|---|---|
| committer | Neil Armstrong <narmstrong@baylibre.com> | 2019-07-31 12:10:54 +0200 |
| commit | 5e5db096a323377cb59e5ce438b4581a7c664674 (patch) | |
| tree | b1b2f557270c89239cefb9e94f542dc1314a4223 | |
| parent | 0d84acb00a108d4664e52a156d0d6e80f1a6e6cd (diff) | |
| download | u-boot-5e5db096a323377cb59e5ce438b4581a7c664674.zip u-boot-5e5db096a323377cb59e5ce438b4581a7c664674.tar.gz u-boot-5e5db096a323377cb59e5ce438b4581a7c664674.tar.bz2 | |
ARM: meson-g12a: Handle 4GiB DRAM size
When configured with 4GiB DRAM size, only 3.8GiB is available, the
I/O beeing mapped in the last 256MiB of the first 4GiB physical memory/
First fixup the mm_region to handle the first 3.8GiB as memory and the
last 256MiB as I/O.
Then limit the real memory reported by the firmware to the available
physical space, 3.8GiB aligned with the mm_region memory zone size.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Tested-by: Mark Kettenis <kettenis@openbsd.org>
| -rw-r--r-- | arch/arm/mach-meson/board-g12a.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/arch/arm/mach-meson/board-g12a.c b/arch/arm/mach-meson/board-g12a.c index 1652970..546b9f6 100644 --- a/arch/arm/mach-meson/board-g12a.c +++ b/arch/arm/mach-meson/board-g12a.c @@ -62,21 +62,21 @@ void meson_init_reserved_memory(void *fdt) phys_size_t get_effective_memsize(void) { /* Size is reported in MiB, convert it in bytes */ - return ((readl(G12A_AO_SEC_GP_CFG0) & G12A_AO_MEM_SIZE_MASK) - >> G12A_AO_MEM_SIZE_SHIFT) * SZ_1M; + return min(((readl(G12A_AO_SEC_GP_CFG0) & G12A_AO_MEM_SIZE_MASK) + >> G12A_AO_MEM_SIZE_SHIFT) * SZ_1M, 0xf5000000); } static struct mm_region g12a_mem_map[] = { { .virt = 0x0UL, .phys = 0x0UL, - .size = 0x80000000UL, + .size = 0xf5000000UL, .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) | PTE_BLOCK_INNER_SHARE }, { - .virt = 0xf0000000UL, - .phys = 0xf0000000UL, - .size = 0x10000000UL, + .virt = 0xf5000000UL, + .phys = 0xf5000000UL, + .size = 0x0b000000UL, .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | PTE_BLOCK_NON_SHARE | PTE_BLOCK_PXN | PTE_BLOCK_UXN @@ -129,6 +129,7 @@ void meson_eth_init(phy_interface_t mode, unsigned int flags) G12A_ETH_REG_0_TX_RATIO(4) | G12A_ETH_REG_0_PHY_CLK_EN | G12A_ETH_REG_0_CLK_EN); + g12a_enable_external_mdio(); break; case PHY_INTERFACE_MODE_RMII: |