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arch: arm: use dt and UCLASS_SYSCON to get gic lpi details

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Use device tree and UCLASS_SYSCON driver to get
Generic Interrupt Controller (GIC) lpi address and
maximum GIC redistributors count.

Also update Kconfig to select REGMAP and SYSCON when
GIC_V3_ITS is enabled.

Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Rayagonda Kokatanur
2020-07-26 22:37:33 +05:30
committed by Tom Rini
parent a76bfe5693
commit 2ae7adc659
4 changed files with 61 additions and 36 deletions
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28
arch/arm/cpu/armv8/fsl-layerscape/soc.c
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@@ -41,37 +41,11 @@ DECLARE_GLOBAL_DATA_PTR;
#endif
#ifdef CONFIG_GIC_V3_ITS
#define PENDTABLE_MAX_SZ ALIGN(BIT(ITS_MAX_LPI_NRBITS), SZ_64K)
#define PROPTABLE_MAX_SZ ALIGN(BIT(ITS_MAX_LPI_NRBITS) / 8, SZ_64K)
#define GIC_LPI_SIZE ALIGN(cpu_numcores() * PENDTABLE_MAX_SZ + \
PROPTABLE_MAX_SZ, SZ_1M)
static int fdt_add_resv_mem_gic_rd_tables(void *blob, u64 base, size_t size)
{
u32 phandle;
int err;
struct fdt_memory gic_rd_tables;
gic_rd_tables.start = base;
gic_rd_tables.end = base + size - 1;
err = fdtdec_add_reserved_memory(blob, "gic-rd-tables", &gic_rd_tables,
&phandle);
if (err < 0)
debug("%s: failed to add reserved memory: %d\n", __func__, err);
return err;
}
int ls_gic_rd_tables_init(void *blob)
{
u64 gic_lpi_base;
int ret;
gic_lpi_base = ALIGN(gd->arch.resv_ram - GIC_LPI_SIZE, SZ_64K);
ret = fdt_add_resv_mem_gic_rd_tables(blob, gic_lpi_base, GIC_LPI_SIZE);
if (ret)
return ret;
ret = gic_lpi_tables_init(gic_lpi_base, cpu_numcores());
ret = gic_lpi_tables_init();
if (ret)
debug("%s: failed to init gic-lpi-tables\n", __func__);