From 7a3a0cce4d5b145b5659d4204c1ed8c8efae31cc Mon Sep 17 00:00:00 2001 From: Anup Patel Date: Wed, 21 Apr 2021 14:11:55 +0530 Subject: lib: utils: Extend fdt_get_node_addr_size() for multiple register sets We add "index" parameter to fdt_get_node_addr_size() API so that calling function can specify index of desired register set. This will allow fdt_get_node_addr_size() to handle DT nodes with multiple register sets. Signed-off-by: Anup Patel Reviewed-by: Atish Patra --- lib/utils/fdt/fdt_helper.c | 31 +++++++++++++++++++++++-------- lib/utils/gpio/fdt_gpio_sifive.c | 2 +- lib/utils/reset/fdt_reset_sifive_test.c | 2 +- 3 files changed, 25 insertions(+), 10 deletions(-) (limited to 'lib') diff --git a/lib/utils/fdt/fdt_helper.c b/lib/utils/fdt/fdt_helper.c index a27f5ba..b68544f 100644 --- a/lib/utils/fdt/fdt_helper.c +++ b/lib/utils/fdt/fdt_helper.c @@ -157,13 +157,17 @@ static int fdt_translate_address(void *fdt, uint64_t reg, int parent, return 0; } -int fdt_get_node_addr_size(void *fdt, int node, uint64_t *addr, uint64_t *size) +int fdt_get_node_addr_size(void *fdt, int node, int index, + uint64_t *addr, uint64_t *size) { int parent, len, i, rc; int cell_addr, cell_size; const fdt32_t *prop_addr, *prop_size; uint64_t temp = 0; + if (!fdt || node < 0 || index < 0) + return SBI_EINVAL; + parent = fdt_parent_offset(fdt, node); if (parent < 0) return parent; @@ -178,6 +182,11 @@ int fdt_get_node_addr_size(void *fdt, int node, uint64_t *addr, uint64_t *size) prop_addr = fdt_getprop(fdt, node, "reg", &len); if (!prop_addr) return SBI_ENODEV; + + if ((len / sizeof(u32)) <= (index * (cell_addr + cell_size))) + return SBI_EINVAL; + + prop_addr = prop_addr + (index * (cell_addr + cell_size)); prop_size = prop_addr + cell_addr; if (addr) { @@ -270,7 +279,8 @@ int fdt_parse_gaisler_uart_node(void *fdt, int nodeoffset, if (nodeoffset < 0 || !uart || !fdt) return SBI_ENODEV; - rc = fdt_get_node_addr_size(fdt, nodeoffset, ®_addr, ®_size); + rc = fdt_get_node_addr_size(fdt, nodeoffset, 0, + ®_addr, ®_size); if (rc < 0 || !reg_addr || !reg_size) return SBI_ENODEV; uart->addr = reg_addr; @@ -308,7 +318,8 @@ int fdt_parse_shakti_uart_node(void *fdt, int nodeoffset, if (nodeoffset < 0 || !uart || !fdt) return SBI_ENODEV; - rc = fdt_get_node_addr_size(fdt, nodeoffset, ®_addr, ®_size); + rc = fdt_get_node_addr_size(fdt, nodeoffset, 0, + ®_addr, ®_size); if (rc < 0 || !reg_addr || !reg_size) return SBI_ENODEV; uart->addr = reg_addr; @@ -342,7 +353,8 @@ int fdt_parse_sifive_uart_node(void *fdt, int nodeoffset, if (nodeoffset < 0 || !uart || !fdt) return SBI_ENODEV; - rc = fdt_get_node_addr_size(fdt, nodeoffset, ®_addr, ®_size); + rc = fdt_get_node_addr_size(fdt, nodeoffset, 0, + ®_addr, ®_size); if (rc < 0 || !reg_addr || !reg_size) return SBI_ENODEV; uart->addr = reg_addr; @@ -380,7 +392,8 @@ int fdt_parse_uart8250_node(void *fdt, int nodeoffset, if (nodeoffset < 0 || !uart || !fdt) return SBI_ENODEV; - rc = fdt_get_node_addr_size(fdt, nodeoffset, ®_addr, ®_size); + rc = fdt_get_node_addr_size(fdt, nodeoffset, 0, + ®_addr, ®_size); if (rc < 0 || !reg_addr || !reg_size) return SBI_ENODEV; uart->addr = reg_addr; @@ -440,7 +453,8 @@ int fdt_parse_plic_node(void *fdt, int nodeoffset, struct plic_data *plic) if (nodeoffset < 0 || !plic || !fdt) return SBI_ENODEV; - rc = fdt_get_node_addr_size(fdt, nodeoffset, ®_addr, ®_size); + rc = fdt_get_node_addr_size(fdt, nodeoffset, 0, + ®_addr, ®_size); if (rc < 0 || !reg_addr || !reg_size) return SBI_ENODEV; plic->addr = reg_addr; @@ -481,7 +495,8 @@ int fdt_parse_aclint_node(void *fdt, int nodeoffset, bool for_timer, !out_first_hartid || !out_hart_count) return SBI_EINVAL; - rc = fdt_get_node_addr_size(fdt, nodeoffset, ®_addr, ®_size); + rc = fdt_get_node_addr_size(fdt, nodeoffset, 0, + ®_addr, ®_size); if (rc < 0 || !reg_addr || !reg_size) return SBI_ENODEV; *out_addr = reg_addr; @@ -543,7 +558,7 @@ int fdt_parse_compat_addr(void *fdt, uint64_t *addr, if (nodeoffset < 0) return nodeoffset; - rc = fdt_get_node_addr_size(fdt, nodeoffset, addr, NULL); + rc = fdt_get_node_addr_size(fdt, nodeoffset, 0, addr, NULL); if (rc < 0 || !addr) return SBI_ENODEV; diff --git a/lib/utils/gpio/fdt_gpio_sifive.c b/lib/utils/gpio/fdt_gpio_sifive.c index 00d3e14..677f0fa 100644 --- a/lib/utils/gpio/fdt_gpio_sifive.c +++ b/lib/utils/gpio/fdt_gpio_sifive.c @@ -77,7 +77,7 @@ static int sifive_gpio_init(void *fdt, int nodeoff, u32 phandle, return SBI_ENOSPC; chip = &sifive_gpio_chip_array[sifive_gpio_chip_count]; - rc = fdt_get_node_addr_size(fdt, nodeoff, &addr, NULL); + rc = fdt_get_node_addr_size(fdt, nodeoff, 0, &addr, NULL); if (rc) return rc; diff --git a/lib/utils/reset/fdt_reset_sifive_test.c b/lib/utils/reset/fdt_reset_sifive_test.c index b0b59e7..7e0eba3 100644 --- a/lib/utils/reset/fdt_reset_sifive_test.c +++ b/lib/utils/reset/fdt_reset_sifive_test.c @@ -18,7 +18,7 @@ static int sifive_test_reset_init(void *fdt, int nodeoff, int rc; uint64_t addr; - rc = fdt_get_node_addr_size(fdt, nodeoff, &addr, NULL); + rc = fdt_get_node_addr_size(fdt, nodeoff, 0, &addr, NULL); if (rc) return rc; -- cgit v1.2.3